| Year |
Citation |
Score |
| 2015 |
Kennedy N, Liu P, Cohen T. Fundamental Difference in Reductive Lithiations with Preformed Radical Anions versus Catalytic Aromatic Electron-Transfer Agents: N,N-Dimethylaniline as an Advantageous Catalyst. Angewandte Chemie (International Ed. in English). PMID 26577387 DOI: 10.1002/Anie.201508971 |
0.345 |
|
| 2015 |
Kennedy N, Cohen T. The Stereoselective Reductions of Ketones to the Most Thermodynamically Stable Alcohols Using Lithium and Hydrated Salts of Common Transition Metals. The Journal of Organic Chemistry. 80: 8134-41. PMID 26226182 DOI: 10.1021/Acs.Joc.5B01232 |
0.41 |
|
| 2015 |
Kennedy N, Lu G, Liu P, Cohen T. Reductive Lithiation in the Absence of Aromatic Electron Carriers. A Steric Effect Manifested on the Surface of Lithium Metal Leads to a Difference in Relative Reactivity Depending on Whether the Aromatic Electron Carrier Is Present or Absent. The Journal of Organic Chemistry. 80: 8571-82. PMID 26225894 DOI: 10.1021/Acs.Joc.5B01136 |
0.407 |
|
| 2011 |
Wei G, Chalker JM, Cohen T. Synthesis of (-)-α-kainic acid via TMSCl-promoted Pd-catalyzed zinc-ene cyclization of an allyl acetate. The Journal of Organic Chemistry. 76: 7912-7. PMID 21866925 DOI: 10.1021/Jo201341Q |
0.43 |
|
| 2010 |
Zheng S, Gao N, Liu W, Liu D, Zhao X, Cohen T. Regio- and enantioselective iridium-catalyzed allylation of thiophenol: synthesis of enantiopure allyl phenyl sulfides. Organic Letters. 12: 4454-7. PMID 20863112 DOI: 10.1021/Ol101915B |
0.472 |
|
| 2010 |
Zhao X, Zheng S, Gao N, Liu W, Liu D, Cohen T. Synthesis of Enantiopure Allyl Phenyl Sulfides Synfacts. 2010: 1400-1400. DOI: 10.1055/S-0030-1258885 |
0.336 |
|
| 2010 |
Ivanov R, Marek I, Cohen T. The superiority of properly prepared lithium 1-N,N-dimethylaminonaphthalenide (LDMAN) over other aromatic radical-anions for the generation of organolithiums by reductive lithiation Tetrahedron Letters. 51: 174-176. DOI: 10.1016/J.Tetlet.2009.10.121 |
0.366 |
|
| 2010 |
Unger R, Cohen T, Marek I. Diastero- and enantioselective intramolecular carbometalation reaction Tetrahedron. 66: 4874-4881. DOI: 10.1016/J.Tet.2010.04.038 |
0.384 |
|
| 2010 |
Cheng D, Knox KR, Cohen T. ChemInform Abstract: Tandem Lithium-Ene Cyclization and Thiophenoxide Expulsion to Produce Fused Vinylcyclopropanes: First Observation of Allylic Lithium Oxyanion-Induced Reactivity and Stereoselectivity in Intramolecular Carbolithiation. Cheminform. 31: no-no. DOI: 10.1002/chin.200015083 |
0.357 |
|
| 2009 |
Liu T, Zhao X, Lu L, Cohen T. Readily prepared 3-chloro-1-(phenylthio)propene, a versatile three-carbon annulating agent. Organic Letters. 11: 4576-9. PMID 19772307 DOI: 10.1021/Ol901818J |
0.326 |
|
| 2009 |
Unger R, Weisser F, Chinkov N, Stanger A, Cohen T, Marek I. Enantio- and diastereoselective tandem zn-promoted brook rearrangement/ene-allene carbocyclization reaction. Organic Letters. 11: 1853-6. PMID 19290654 DOI: 10.1021/Ol9004036 |
0.422 |
|
| 2009 |
Cochi A, Burger B, Navarro C, Pardo DG, Cossy J, Zhao Y, Cohen T. Enantioselective ring expansion of prolinols: An efficient and short synthesis of 2-phenylpiperidin-3-ol derivatives and 3-hydroxypipecolic acids Synlett. 2157-2161. DOI: 10.1055/S-0029-1217568 |
0.331 |
|
| 2009 |
Unger R, Cohen T, Marek I. Tandem Zn-Brook rearrangement/ene-allene carbocyclization European Journal of Organic Chemistry. 1749-1756. DOI: 10.1002/Ejoc.200900043 |
0.355 |
|
| 2007 |
Cohen T, Gibney H, Ivanov R, Yeh EA, Marek I, Curran DP. Intramolecular carbozincation of unactivated alkenes occurs through a zinc radical transfer mechanism. Journal of the American Chemical Society. 129: 15405-9. PMID 17988132 DOI: 10.1021/Ja076554K |
0.402 |
|
| 2007 |
Chalker JM, Yang A, Deng K, Cohen T. Two syntheses of (-)-kainic acid via highly stereoselective zinc-ene cyclizations. Organic Letters. 9: 3825-8. PMID 17705505 DOI: 10.1021/Ol701733U |
0.688 |
|
| 2007 |
Liu H, Deng K, Cohen T, Jordan KD. Computational study of the stereochemistry of intramolecular carbolithiation of an alkene by a secondary alkyllithium: stereochemistry change caused by a single THF molecule of solvation. Organic Letters. 9: 1911-4. PMID 17439226 DOI: 10.1021/Ol070453+ |
0.32 |
|
| 2006 |
Chen W, Zhao X, Lu L, Cohen T. 2-Phenylthio-3-bromopropene, a valuable synthon, easily prepared by a simple rearrangement. Organic Letters. 8: 2087-90. PMID 16671788 DOI: 10.1021/Ol0605171 |
0.433 |
|
| 2006 |
Deng K, Bensari-Bouguerra A, Whetstone J, Cohen T. Cyclization by intramolecular carbolithiation of alkyl- and vinyllithiums prepared by the action of aromatic radical anions on phenyl thioethers. High stereoselectivity in the cyclization accelerated by an allylic lithium oxyanion. The Journal of Organic Chemistry. 71: 2360-72. PMID 16526785 DOI: 10.1021/Jo052535M |
0.475 |
|
| 2006 |
Yang A, Butela H, Deng K, Doubleday MD, Cohen T. Organolithiums by reductive lithiation: the catalytic aromatic method versus the use of preformed aromatic radical-anions. Naphthalene can behave as a catalyst or an inhibitor Tetrahedron. 62: 6526-6535. DOI: 10.1016/J.Tet.2006.03.056 |
0.701 |
|
| 2005 |
Unger R, Cohen T, Marek I. New tandem Zn-promoted Brook rearrangement/ene-allene carbocyclization reactions. Organic Letters. 7: 5313-6. PMID 16268566 DOI: 10.1021/Ol052237B |
0.389 |
|
| 2005 |
Deng K, Chalker J, Yang A, Cohen T. Allyl sulfones as precursors to allylzincs in the palladium-catalyzed zinc-ene cyclization: highly efficient synthesis of enantiopure (-)-erythrodiene. Organic Letters. 7: 3637-40. PMID 16092838 DOI: 10.1021/Ol051049I |
0.721 |
|
| 2003 |
Mudryk B, Cohen T. 1,3‐Diols from Lithium β‐Lithioalkoxides Generated by the Reductive Lithiation of Epoxides: 2,5‐Dimethyl‐2,4‐Hexanediol Organic Syntheses. 173-173. DOI: 10.1002/0471264180.Os072.21 |
0.371 |
|
| 2003 |
Cohen T, Ruffner RJ, Shull DW, Fogel ER, Falck JR. Vinyl Sulfides from Thioacetals with Copper(I) Trifluoromethanesulfonate: (Z)‐2‐Methoxy‐1‐Phenylthio‐1,3‐Butadiene Organic Syntheses. 202-202. DOI: 10.1002/0471264180.Os059.29 |
0.372 |
|
| 2002 |
Deng K, Bensari A, Cohen T. Cyclization by intramolecular carbolithiation of alkyl- and vinyllithiums prepared by reductive lithiation: surprising stereochemistry in the lithium oxyanion accelerated cyclization. Journal of the American Chemical Society. 124: 12106-7. PMID 12371845 DOI: 10.1021/Ja027988C |
0.521 |
|
| 2001 |
Cohen T, Kreethadumrongdat T, Liu X, Kulkarni V. Use of aromatic radical-anions in the absence of THF. Tandem formation and cyclization of benzyllithiums derived from the attack of homo- and bishomoallyllithiums on alpha-methylstyrenes: two-pot synthesis of cuparene. Journal of the American Chemical Society. 123: 3478-83. PMID 11472119 DOI: 10.1021/Ja004353+ |
0.722 |
|
| 2001 |
Cheng D, Kreethadumrongdat T, Cohen T. Allylic lithium oxyanionic directed and facilitated simmons-smith cyclopropanation: stereoselective synthesis of (+/-)-cis-sabinene hydrate and a novel ring expansion. Organic Letters. 3: 2121-3. PMID 11418064 DOI: 10.1021/Ol016086Y |
0.715 |
|
| 2001 |
Cheng D, Zhu S, Yu Z, Cohen T. The magnesium-ene cyclization stereochemically directed by an allylic oxyanionic group and its application to a highly stereoselective synthesis of (+/-)-matatabiether. Allylmagnesium compounds by reductive magnesiation of allyl phenyl sulfides. Journal of the American Chemical Society. 123: 30-4. PMID 11273598 DOI: 10.1021/Ja0029782 |
0.474 |
|
| 2000 |
Cheng D, Knox KR, Cohen T. Tandem lithium-ene cyclization and thiophenoxide expulsion to produce fused vinylcyclopropanes: First observation of allylic lithium oxyanion- induced reactivity and stereoselectivity in intramolecular carbolithiation Journal of the American Chemical Society. 122: 412-413. DOI: 10.1021/Ja993325S |
0.455 |
|
| 2000 |
Zhu S, Pardi S, Cohen T. Acid-catalyzed rearrangements of some 1,6-diketones Tetrahedron Letters. 41: 9589-9593. DOI: 10.1016/S0040-4039(00)01712-3 |
0.396 |
|
| 1999 |
Cheng D, Zhu S, Liu X, Norton SH, Cohen T. The Lithium−Ene Cyclization and the Purported Carbanion-Induced Ene Cyclization Journal of the American Chemical Society. 121: 10241-10242. DOI: 10.1021/Ja992583M |
0.39 |
|
| 1999 |
Chen F, Mudryk B, Cohen T. Tandem reductive lithiations ? Carbanionic cyclizations yielding sulfur stabilized cyclopropyl- and cyclobutylcarbinyllithiums Tetrahedron. 55: 3291-3304. DOI: 10.1016/S0040-4020(98)01141-7 |
0.405 |
|
| 1998 |
Liu H, Shook CA, Jamison JA, Thiruvazhi M, Cohen T. The cyclopropylalkylidenecyclopropane thermal double ring expansion. A novel route to the bicyclo[5.3.1]undecane skeleton of the AB ring system of taxanes Journal of the American Chemical Society. 120: 605-606. DOI: 10.1021/Ja973232F |
0.343 |
|
| 1997 |
Zhu S, Cohen T. The preparation of synthetically useful carbonyl-protected δ- and ε-lithio ketones via reductive lithiation Tetrahedron. 53: 17607-17624. DOI: 10.1016/S0040-4020(97)10230-7 |
0.462 |
|
| 1997 |
Cohen T, Tong S. Applications of highly enantioenriched alcohols bearing a phenylthio group in the preparation of ring compounds. The two-pot synthesis of an enantiopure spiroacetal pheromone bearing three chiral centers Tetrahedron. 53: 9487-9496. DOI: 10.1016/S0040-4020(97)00635-2 |
0.404 |
|
| 1997 |
Kulkarni V, Cohen T. Cumyl phenyl sulfide forms bicumyl instead of cumyllithium upon reductive lithiation. Thiophenoxide as a leaving group in nucleophilic substitution by SET Tetrahedron. 53: 12089-12100. DOI: 10.1016/S0040-4020(97)00544-9 |
0.412 |
|
| 1996 |
Cohen T. The production of cyclopropanes from organosulfur compounds and a novel cyclopropane ring expansion Pure and Applied Chemistry. 68: 913-918. DOI: 10.1351/Pac199668040913 |
0.42 |
|
| 1995 |
Ahn Y, Doubleday WW, Cohen T. Reaction of Allylmanganese(II) Reagents with Aldehydes Synthetic Communications. 25: 33-41. DOI: 10.1080/00397919508010786 |
0.376 |
|
| 1995 |
Liu H, Cohen T. S-(+)-5-(Phenylthio)-2-pentanol and S-(+)-4-(Phenylthio)-2-butanol: Readily Prepared, Useful Additions to the Chirality Pool. Highly Enantioselective Syntheses of Naturally Occurring Spiroketal Pheromones Journal of Organic Chemistry. 60: 2022-2025. DOI: 10.1021/Jo00112A025 |
0.346 |
|
| 1995 |
Liu H, Cohen T. Yield and selectivity enhancement by trimethylsilyl chloride in the conjugate addition of stabilized organolithiums Tetrahedron Letters. 36: 8925-8928. DOI: 10.1016/0040-4039(95)01919-9 |
0.384 |
|
| 1995 |
Florio S, Capriati V, Gallo A, Cohen T. Reductive lithiation of a trimethyl benzo-1,3-thiazoline: Generation of an α-amino tertiary carbanion and reactions with electrophiles Tetrahedron Letters. 36: 4463-4466. DOI: 10.1016/0040-4039(95)00753-Y |
0.389 |
|
| 1995 |
Cohen T, Chen F, Kulinski T, Florio S, Capriati V. Reductive cleavage and ring expansion of thiochromane and benzodihydrothiophene Tetrahedron Letters. 36: 4459-4462. DOI: 10.1016/0040-4039(95)00752-X |
0.426 |
|
| 1994 |
Ahn Y, Cohen T. A General Diastereoselective Synthesis of Spiroacetals Related to Those in Ionophores via the Reaction of Lactones with Cerium(III) .gamma.-Cerioalkoxide. MAD Reverses the Diastereoselectivity of the Addition of Methylmetallics to a .beta.-Keto Ether Journal of Organic Chemistry. 59: 3142-3150. DOI: 10.1021/Jo00090A036 |
0.497 |
|
| 1994 |
Ahn Y, Cohen T. Cerium(III) chloride remarkably increases the rates of formation and yields of ketones in the reaction of lithium carboxylates with organolithiums Tetrahedron Letters. 35: 203-206. DOI: 10.1016/S0040-4039(00)76511-7 |
0.45 |
|
| 1994 |
Cohen T, Zhang B, Cherkauskas JP. A general preparative method for carbonyl-protected γ-lithioketones via reductive lithiation. Synthetic uses of the bishomoenolate equivalents Tetrahedron. 50: 11569-11584. DOI: 10.1016/S0040-4020(01)85652-0 |
0.491 |
|
| 1994 |
Chen F, Mudryk B, Cohen T. Generation, rearrangements and some synthetic uses of bishomoallyllithiums Tetrahedron. 50: 12793-12810. DOI: 10.1016/S0040-4020(01)81201-1 |
0.464 |
|
| 1993 |
Cohen T. The versatile phenylthio group. a powerful aid in synthesis Phosphorus, Sulfur, and Silicon and the Related Elements. 74: 1-15. DOI: 10.1080/10426509308038097 |
0.407 |
|
| 1993 |
Shook CA, Romberger ML, Jung SH, Xiao M, Sherbine JP, Zhang B, Lin FT, Cohen T. Stereocontrolled double ring expansion of fused allylidenecyclopropanes. A novel route to hydroazulenes and other fused bicyclic systems Journal of the American Chemical Society. 115: 10754-10773. DOI: 10.1021/Ja00076A037 |
0.437 |
|
| 1993 |
Mudryk B, Cohen T. Generation, some synthetic uses, and 1,2-vinyl rearrangements of secondary and tertiary homoallyllithiums, including ring contractions and A ring expansion. Remarkable acceleration of the rearrangement by an oxyanionic group Journal of the American Chemical Society. 115: 3855-3865. DOI: 10.1021/Ja00063A001 |
0.51 |
|
| 1993 |
Cohen T, McNamara K, Kuzemko MA, Ramig K, Landi JJ, Dong Y. A novel one-flask cyclopentannulation involving a dilithiomethane equivalent as a β-connector of two enones. A highly efficient total synthesis of (±)-hirsutene Tetrahedron. 49: 7931-7942. DOI: 10.1016/S0040-4020(01)88017-0 |
0.436 |
|
| 1992 |
Cabral JA, Cohen T, Doubleday WW, Duchelle EF, Fraenkel G, Guo BS, Yu SH. Preparation and remarkable reactivity of the elusive (1,1,3,3-tetramethylallyl)lithium Journal of Organic Chemistry. 57: 3680-3684. DOI: 10.1021/Jo00039A031 |
0.35 |
|
| 1992 |
Ramig K, Kuzemko MA, McNamara K, Cohen T. Use of dilithiomethane equivalent in a novel one-flask [2 + 1 + 2] cyclopentannulation reaction: a highly efficient total synthesis of (.+-.)-hirsutene. The Journal of Organic Chemistry. 57: 1968-1969. DOI: 10.1021/Jo00033A013 |
0.398 |
|
| 1992 |
Verner EJ, Cohen T. Inversion of configuration in the displacement of lithium by hydrogen during a transannular 1,4-hydrogen transfer accompanying a [1,2]-Wittig rearrangement The Journal of Organic Chemistry. 57: 1072-1073. DOI: 10.1021/Jo00030A008 |
0.328 |
|
| 1992 |
Cherkauskas JP, Cohen T. Carbonyl-protected .beta.-lithio aldehydes and ketones via reductive lithiation. A general preparative method for remarkably versatile homoenolate equivalents Journal of Organic Chemistry. 57: 6-8. DOI: 10.1021/Jo00027A004 |
0.335 |
|
| 1991 |
Mudryk B, Cohen T. Synthetically useful dianions via reductive lithiation of tetrahydrofurans by aromatic radical anions Journal of the American Chemical Society. 113: 1866-1867. DOI: 10.1021/Ja00005A080 |
0.394 |
|
| 1991 |
McCullough DW, Bhupathy M, Piccolino E, Cohen T. Highly efficient terpenoid pheromone syntheses via regio and stereocontrolled processing of allyllithiums generated by reductive lithiation of allyl phenyl thioethers Tetrahedron. 47: 9727-9736. DOI: 10.1016/S0040-4020(01)80712-2 |
0.447 |
|
| 1990 |
Cohen T, Doubleday MD. A simple method for producing cycloalkenyllithiums from cycloalkanones via reductive lithiation of enol phenyl thioethers The Journal of Organic Chemistry. 55: 4784-4786. DOI: 10.1021/Jo00303A004 |
0.379 |
|
| 1990 |
Cohen T, Jeong IH, Mudryk B, Bhupathy M, Awad MMA. Synthetically useful .beta.-lithioalkoxides from reductive lithiation of epoxides by aromatic radical anions The Journal of Organic Chemistry. 55: 1528-1536. DOI: 10.1021/Jo00292A029 |
0.358 |
|
| 1990 |
Mudryk B, Shook CA, Cohen T. Simple one-pot syntheses of spiroketals and oxaspirolactones by addition of .gamma.- and .delta.-cerioalkoxides to lactones and cyclic anhydrides Journal of the American Chemical Society. 112: 6389-6391. DOI: 10.1021/Ja00173A033 |
0.378 |
|
| 1989 |
Mudryk B, Cohen T. .gamma.-Lithioalkoxides via reductive lithiation of oxetanes by aromatic radical-anions The Journal of Organic Chemistry. 54: 5657-5659. DOI: 10.1021/Jo00285A008 |
0.384 |
|
| 1989 |
Ramig K, Bhupathy M, Cohen T. Reactions of lithium bicyclo[1.1.0]butan-2-olates formed by carbenoid type decomposition of lithiothioacetal enolates. A novel concept for one-pot cyclopropanation of enones The Journal of Organic Chemistry. 54: 4404-4412. DOI: 10.1021/Jo00279A032 |
0.39 |
|
| 1989 |
Myers MR, Cohen T. Usefully functionalized products from conjugate addition of sulfur-stabilized anions to .alpha.-enones The Journal of Organic Chemistry. 54: 1290-1295. DOI: 10.1021/Jo00267A013 |
0.332 |
|
| 1989 |
Dorigo AE, Houk KN, Cohen T. Unexpected regioselectivity in the reductive cleavage of epoxides: a theoretical rationalization Journal of the American Chemical Society. 111: 8976-8978. DOI: 10.1021/Ja00206A063 |
0.368 |
|
| 1989 |
Cohen T, Bhupathy M. Organoalkali compounds by radical anion induced reductive metalation of phenyl thioethers Accounts of Chemical Research. 22: 152-161. DOI: 10.1021/Ar00160A006 |
0.309 |
|
| 1989 |
Cohen T, Brockunier L. Efficient synthesis of 2-vinylcyclobutanones by the rearrangement of 1-methoxy-1-cyclopropylcarbinols under neutral conditions Tetrahedron. 45: 2917-2924. DOI: 10.1016/S0040-4020(01)80120-4 |
0.429 |
|
| 1988 |
Cohen T, Myers M. A novel one-flask cyclopropanation and vinylcyclopropanation method for .alpha.-enones. Copper(I)-induced .gamma.-thiophenoxide removal from conjugate adducts The Journal of Organic Chemistry. 53: 457-460. DOI: 10.1021/Jo00237A053 |
0.325 |
|
| 1988 |
Ramig K, Bhupathy M, Cohen T. Lithiothioacetals as carbenoids. Highly selective one-flask conversion of cyclohex-2-en-1-ones to lithium bicyclo[1.1.0]butan-2-olate intermediates Journal of the American Chemical Society. 110: 2678-2680. DOI: 10.1021/Ja00216A067 |
0.339 |
|
| 1988 |
McCullough DW, Cohen T. Preparation of 2-vinylcyclobutanones viam-chloroperbenzoic acid oxidation of allylidenecyclopropanes Tetrahedron Letters. 29: 27-30. DOI: 10.1016/0040-4039(88)80007-8 |
0.369 |
|
| 1988 |
Cohen T, Jung S, Romberger ML, McCullough DW. Highly efficient synthesis of alkylidene- and allylidenecyclopropanes Tetrahedron Letters. 29: 25-26. DOI: 10.1016/0040-4039(88)80006-6 |
0.429 |
|
| 1987 |
Guo BS, Doubleday W, Cohen T. Allylcerium(III) compounds, powerful new synthetic reagents. A new stereocontrolled approach to olefins and methylene-interrupted polyenes Journal of the American Chemical Society. 109: 4710-4711. DOI: 10.1021/Ja00249A038 |
0.324 |
|
| 1987 |
Bhupathy M, Cohen T. 1-Methoxy-1-(phenylthio)cyclopropanes from olefins via the Pummerer rearrangement Tetrahedron Letters. 28: 4797-4800. DOI: 10.1016/S0040-4039(00)96628-0 |
0.443 |
|
| 1987 |
Bhupathy M, Cohen T. 1-Phenylthio-1-(trimethylsiloxy)cyclopropanes via the sila-Pummerer rearrangement Tetrahedron Letters. 28: 4793-4796. DOI: 10.1016/S0040-4039(00)96627-9 |
0.427 |
|
| 1987 |
Abraham WD, Bhupathy M, Cohen T. Carbenoid type base induced ring expansion of the adducts of cyclic ketones with bis(phenylthio)methyllithium Tetrahedron Letters. 28: 2203-2206. DOI: 10.1016/S0040-4039(00)96080-5 |
0.458 |
|
| 1986 |
Ritter RH, Cohen T. Carbenoid anion behavior of dilithio derivatives of thioacetal alcohols. Stereochemistry and mechanism of ring closures by oxyanion-facilitated carbon-hydrogen bond insertion Journal of the American Chemical Society. 108: 3718-3725. DOI: 10.1021/Ja00273A028 |
0.345 |
|
| 1986 |
Cohen T, Guo B. Reductive metallation Tetrahedron. 42: 2803-2808. DOI: 10.1016/S0040-4020(01)90569-1 |
0.479 |
|
| 1986 |
Cohen T, Sherbine JP, Hutchins RR, Lin M. α-HETEROATOM ORGANOLITHIUM COMPOUNDS BY REDUCTIVE LITHIATION OF SUBSTITUTED PHENYLTHIOETHERS USING LITHIUM 1-(DIMETHYLAMINO)NAPHTHALENIDE (LDMAN) Organometallic Syntheses. 361-368. DOI: 10.1016/B978-0-444-42607-9.50097-8 |
0.341 |
|
| 1985 |
Cohen T, Yu LC, Daniewski WM. Sulfur-assisted ring expansion of the potassium salts of 1-vinylcyclobutanols. A versatile synthesis of cyclohexanones The Journal of Organic Chemistry. 50: 4596-4600. DOI: 10.1021/Jo00223A033 |
0.435 |
|
| 1985 |
Cohen T, Yu LC. Formation and uses of the dianion formally produced by conjugate addition of bis(phenylthio)methyl dianion to cyclohex-2-en-1-one. Configurations and conformations of the products of conjugate addition of tris(phenylthio)methyllithium to carvone The Journal of Organic Chemistry. 50: 3266-3269. DOI: 10.1021/Jo00218A005 |
0.381 |
|
| 1985 |
Cohen T, Sherbine JP, Mendelson SA, Myers M. Efficient synthetic methodology for 1-(phenylthio)cyclopropylsilanes, precursors of 1-(lithio)cyclopropylsilanes Tetrahedron Letters. 26: 2965-2968. DOI: 10.1016/S0040-4039(00)98593-9 |
0.372 |
|
| 1985 |
Bhupathy M, Cohen T. Remarkable stereocontrol in the addition of an anion to an α- alkoxyaldehyde by encouraging or discouraging internal complexation. Applications to brief syntheses of the (house mouse) pheromone and -brevicomin Tetrahedron Letters. 26: 2619-2622. DOI: 10.1016/S0040-4039(00)98118-8 |
0.337 |
|
| 1985 |
Cohen T, Kosarych Z, Suzuki K, Yu LC. [2,3]-Sigmatropic rearrangement of an in situ prepared ylide and a thio ether to thio ester conversion as key steps in short syntheses of sarkomycin and its phenyl thio ester The Journal of Organic Chemistry. 50: 2965-2968. DOI: 10.1002/Chin.198552116 |
0.459 |
|
| 1984 |
Cohen T, Lin MT. Two-flask preparation of .alpha.-lithio cyclic ethers from .gamma.- and .delta.-lactones. Reductive lithiation as a route, via radical intermediates, to axial 2-lithiotetrahydropyrans and their equilibration to the equatorial isomers Journal of the American Chemical Society. 106: 1130-1131. DOI: 10.1021/Ja00316A060 |
0.367 |
|
| 1984 |
Cohen T, Yu LC. Carbene anion formation from a dithioacetal anion bearing an allylic oxyanion substituent at the 2 position. Divergent behavior of the dianion in ether and THF The Journal of Organic Chemistry. 49: 605-608. DOI: 10.1002/Chin.198432150 |
0.374 |
|
| 1983 |
Alston PV, Gordon MD, Ottenbrite RM, Cohen T. Secondary orbital interactions determining regioselectivity in the Diels-Alder reaction. 5. Thio-substituted 1,3-butadienes Journal of Organic Chemistry. 48: 5051-5054. DOI: 10.1021/Jo00173A051 |
0.34 |
|
| 1983 |
Cohen T, Bhupathy M, Matz JR. A practical method for using alkoxide-accelerated vinylcyclobutane ring expansions in the synthesis of six-membered rings. Unexpected orbital symmetry allowed and forbidden 1,3-sigmatropic rearrangements Journal of the American Chemical Society. 105: 520-525. DOI: 10.1021/Ja00341A035 |
0.376 |
|
| 1983 |
Cohen T, Bhupathy M. A one-flask, high-yield, stereoselective synthesis of racemic endo-brevicomin Tetrahedron Letters. 24: 4163-4164. DOI: 10.1016/S0040-4039(00)88288-X |
0.447 |
|
| 1983 |
Cohen T, Onopchenko A. Competing hydride transfer and ene reactions in the aminoalkylation of 1-alkenes with N,N-dimethylmethyleniminium ions. A literature correction The Journal of Organic Chemistry. 48: 4531-4537. DOI: 10.1002/Chin.198420165 |
0.308 |
|
| 1983 |
COHEN T, YU L. ChemInform Abstract: CHEMOSELECTIVE BEHAVIOR OF ENOLATE CARBENES DERIVED FROM DIANIONS OF ENOL THIOACETALS Chemischer Informationsdienst. 14. DOI: 10.1002/Chin.198333112 |
0.319 |
|
| 1982 |
Cohen T, Kosarych Z. Complete regio- and stereospecificity in the Lewis acid catalyzed Diels-Alder reactions of (Z)-2-methoxy-1-(phenylthio)-1,3-butadienes. Conversion of the CS configuration of an adduct to the CC configuration at the allylic position by a [2,3] sigmatropic rearrangement The Journal of Organic Chemistry. 47: 4005-4008. DOI: 10.1021/Jo00141A047 |
0.418 |
|
| 1982 |
Cohen T, Ritter RH, Ouellette D. Single and double ring-closure reactions of dianions of bis(diphenyl thioacetals). A new, synthetically useful principle of carbene generation and intramolecular capture Journal of the American Chemical Society. 104: 7142-7148. DOI: 10.1021/Ja00389A042 |
0.436 |
|
| 1982 |
Kosarych Z, Cohen T. A method for methylidenation and ethylidenation of an allylic thioether leading to a 2,3-sigma-tropic rearrangement. Failure of the Simmons-Smith reaction in the presence of thioethers Tetrahedron Letters. 23: 3019-3022. DOI: 10.1016/S0040-4039(00)87522-X |
0.413 |
|
| 1981 |
Matz JR, Cohen T. Cyclopentenone and cyclohexenone annulations via acid-catalyzed 1,2- and 1,3-acyl migration of 2-vinylcyclobutanones. Rearrangement route to spiro- and angularly substituted fused-cyclopentenones. Tetrahedron Letters. 22: 2459-2462. DOI: 10.1016/S0040-4039(01)92932-6 |
0.431 |
|
| 1981 |
Cohen T, Matz JR. A synthesis of 2-vinylcylobutanones using 1-methoxycyclopropyllithium reagents Tetrahedron Letters. 22: 2455-2458. DOI: 10.1016/S0040-4039(01)92931-4 |
0.444 |
|
| 1981 |
Cohen T, Ouellette D, Pushpananda K, Senaratne A, Yu L. An economical and convenient preparation of 2-(phenylthio)cyclobutanone, a synthetic equivalent of cyclobutanone Tetrahedron Letters. 22: 3377-3380. DOI: 10.1016/S0040-4039(01)81910-9 |
0.361 |
|
| 1980 |
Cohen T, Matz JR. Reductive Lithiation of Some Thioketals Using Lithium 1-(Dimethylamino)naphthalenide Synthetic Communications. 10: 311-317. DOI: 10.1080/00397918008062755 |
0.371 |
|
| 1980 |
Cohen T, Daniewski AR, Solash J. Deamination of the axial and equatorial trans-2-decalylamines by the N-nitrosoamide method in various solvents. Remarkable stereochemistry and efficiency of capture of a cationic intermediate by acetonitrile The Journal of Organic Chemistry. 45: 2847-2854. DOI: 10.1021/Jo01302A019 |
0.365 |
|
| 1980 |
Cohen T, Botelho AD, Jankowski EJ. Nitrous acid deamination of the axial and equatorial trans-2-decalylamines in mixed solvents The Journal of Organic Chemistry. 45: 2839-2847. DOI: 10.1021/Jo01302A018 |
0.303 |
|
| 1980 |
Cohen T, Matz JR. A general preparative method for .alpha.-lithioethers and its application to a concise, practical synthesis of brevicomin Journal of the American Chemical Society. 102: 6900-6902. DOI: 10.1021/Ja00542A064 |
0.346 |
|
| 1980 |
Kosarych Z, Cohen T. Rapid, high-yield cleavage of enol and dienol methyl ethers under mild conditions using chlorotrimethylsilane/sodium iodide Tetrahedron Letters. 21: 3959-3962. DOI: 10.1016/S0040-4039(00)92843-0 |
0.408 |
|
| 1980 |
Cohen T, Kosarych Z. Preparative methods for (Z)-2-methoxy-1-phenylthio-1,3-butadienes. Rearrangement during copper(I)-induced elimination of thiophenol from some γ,δ-unsaturated thioacetals Tetrahedron Letters. 21: 3955-3958. DOI: 10.1016/S0040-4039(00)92842-9 |
0.451 |
|
| 1979 |
Cohen T, Weisenfeld RB. The conversion of carboxylic acids and esters into acyl anion equivalents via reduction lithiation of their ketene phenylthioacetal derivatives The Journal of Organic Chemistry. 44: 3601-3603. DOI: 10.1021/Jo01334A041 |
0.39 |
|
| 1979 |
Cohen T, Gapinski RE, Hutchins RR. Ketene bis(phenylthio)acetals. Easily prepared intermediates for the conversion of acids and esters to .alpha.-alkylidene ketones and sulfur-substituted dienes The Journal of Organic Chemistry. 44: 3599-3601. DOI: 10.1021/Jo01334A040 |
0.448 |
|
| 1979 |
Cohen T, Weisenfeld RB, Gapinski RE. One-step synthesis of complex cyclopropanone phenylthioketals by the reaction of sulfur-stabilized anions with ketene bis(phenylthio)acetal The Journal of Organic Chemistry. 44: 4744-4746. DOI: 10.1021/Jo00393A071 |
0.428 |
|
| 1978 |
Cohen T, Ruffner RJ, Shull DW, Daniewski WM, Ottenbrite RM, Alston PV. Secondary orbital interactions determining regioselectivity in the Diels-Alder reaction. 4. Experimental and theoretical examination of the reaction of acrylonitrile with 1-(phenylthio)-2-methoxy-1,3-butadiene. Determination of the conformations of the four cyclohexene adducts by proton NMR The Journal of Organic Chemistry. 43: 4052-4057. DOI: 10.1021/Jo00415A015 |
0.352 |
|
| 1978 |
Alston PV, Ottenbrite RM, Cohen T. Secondary orbital interactions determining regioselectivity in the Diels-Alder reaction. 3. Disubstituted dienes Journal of Organic Chemistry. 43: 1864-1867. DOI: 10.1021/Jo00404A003 |
0.302 |
|
| 1978 |
Cohen T, Berninger RW, Wood JT. Products and kinetics of decarboxylation of activated and unactivated aromatic cuprous carboxylates in pyridine and in quinoline The Journal of Organic Chemistry. 43: 837-848. DOI: 10.1021/Jo00399A010 |
0.327 |
|
| 1978 |
Cohen T, Gapinski RE. The conversion of esters to phenyl thioesters by boron thiophenoxide and aluminum thiophenoxide Tetrahedron Letters. 19: 4319-4322. DOI: 10.1016/S0040-4039(01)95213-X |
0.412 |
|
| 1978 |
Cohen T, Nolan SM. Tris(phenylthio)methyllithium as a formyl anion equivalent in conjugate addition. Preparation of unprotected γ-ketoaldehydes. Tetrahedron Letters. 19: 3533-3536. DOI: 10.1016/S0040-4039(01)94985-8 |
0.412 |
|
| 1978 |
Cohen T, Ouellette D, Daniewski WM. Base-induced ring closure of bis-dithioacetals via an apparent carbenoid. A novel route to functionalized cyclobutanes and cyclopentanes Tetrahedron Letters. 19: 5063-5066. DOI: 10.1016/S0040-4039(01)85813-5 |
0.349 |
|
| 1978 |
Cohen T, Daniewsici WM, Weisenfeld RB. A simple preparation of sulfur-stabilized cyclopropyl anions via reductive lithiation of cyclopropanone dithioketals. Tetrahedron Letters. 19: 4665-4668. DOI: 10.1016/S0040-4039(01)85699-9 |
0.356 |
|
| 1977 |
Cohen T, Dietz AG, Miser JR. A simple preparation of phenols from diazonium ions via the generation and oxidation of aryl radicals by copper salts The Journal of Organic Chemistry. 42: 2053-2058. DOI: 10.1021/Jo00432A003 |
0.371 |
|
| 1976 |
Cohen T, Bennett DA, Mura AJ. Preparative methods for .beta.-acyl vinyl anion equivalents from enones or allyl sulfides The Journal of Organic Chemistry. 41: 2506-2507. DOI: 10.1021/Jo00876A041 |
0.319 |
|
| 1976 |
Cohen T, Mura AJ, Shull DW, Fogel ER, Ruffner RJ, Falck JR. Removal of sulfur groups from molecules by copper(I). Preparation of sulfur-substituted 1,3-dienes for the Diels-Alder reaction The Journal of Organic Chemistry. 41: 3218-3219. DOI: 10.1002/Chin.197652189 |
0.398 |
|
| 1975 |
Cohen T, Herman G, Falck J, Mura, Jr. A. Additions and Corrections, "Copper(I)-Promoted Thiophenoxide Ionization in Solution. A Simple Synthesis of Vinyl Phenyl Sulfides." The Journal of Organic Chemistry. 40: 3810-3810. DOI: 10.1021/Jo00913A610 |
0.36 |
|
| 1975 |
Cohen T, Cristea I. Copper(I)-induced reductive dehalogenation, hydrolysis, or coupling of some aryl and vinyl halides at room temperature The Journal of Organic Chemistry. 40: 3649-3651. DOI: 10.1021/Jo00913A007 |
0.318 |
|
| 1975 |
Jenkins JA, Cohen T. Deuterium isotope effects and the influence of solvent in the redox and rearrangement reactions of 2-picoline N-oxide and phenylacetic anhydride The Journal of Organic Chemistry. 40: 3566-3571. DOI: 10.1021/Jo00912A021 |
0.375 |
|
| 1975 |
Cohen T, Herman G, Falck JR, Mura AJ. Copper(I)-promoted thiophenoxide ionization in solution. Simple synthesis of vinyl phenyl sulfides The Journal of Organic Chemistry. 40: 812-813. DOI: 10.1021/Jo00894A038 |
0.356 |
|
| 1975 |
Cohen T, Kuhn D, Falck JR. Application of copper(I)-induced thiophenoxide removal to ring expansions or chain extensions of aldehydes and ketones. Detection, Isolation, and independent preparation of the .alpha.-epoxy thioether intermediate Journal of the American Chemical Society. 97: 4749-4751. DOI: 10.1021/Ja00849A045 |
0.387 |
|
| 1975 |
Mura AJ, Majetich G, Grieco PA, Cohen T. Methods for the conversion of vinyl sulfides to aldehydes Tetrahedron Letters. 16: 4437-4440. DOI: 10.1016/S0040-4039(00)91086-4 |
0.322 |
|
| 1975 |
Mura AJ, Bennett DA, Cohen T. A simple synthesis of 1-thiophenoxy-3-chloroalkenes useful synthons for acrolein and methacrolein Tetrahedron Letters. 16: 4433-4436. DOI: 10.1016/S0040-4039(00)91085-2 |
0.35 |
|
| 1974 |
Cohen T, Lewarchik RJ, Tarino JZ. Role of radical and organocopper intermediates in aromatic diazonium decomposition induced by cuprous ion Journal of the American Chemical Society. 96: 7753-7760. DOI: 10.1021/Ja00832A023 |
0.326 |
|
| 1974 |
Cohen T, Herman G, Chapman TM, Kuhn D. Laboratory model for the biosynthesis of cyclopropane rings. Copper-catalyzed cyclopropanation of olefins by sulfur ylides Journal of the American Chemical Society. 96: 5627-5628. DOI: 10.1021/Ja00824A082 |
0.39 |
|
| 1974 |
Cohen T, Wood J, Dietz AG. Organocopper intermediates in the exchange reaction of aryl halides with salts of copper(I). The possible role of copper(III) Tetrahedron Letters. 15: 3555-3558. DOI: 10.1016/S0040-4039(01)91965-3 |
0.372 |
|
| 1973 |
Cohen T, Solash J. Configurational retention in the silver ion catalyzed solvolysis of an alkyl bromide in acetonitrile Tetrahedron Letters. 14: 2513-2516. DOI: 10.1016/S0040-4039(01)96193-3 |
0.34 |
|
| 1972 |
Cohen T, Deets GL. Reaction of pyridine N-oxide with acetic anhydride in anisole and in benzonitrile The Journal of Organic Chemistry. 37: 55-58. DOI: 10.1021/Jo00966A015 |
0.346 |
|
| 1972 |
Cohen T, Poeth T. Copper-induced coupling of vinyl halides. Stereochemistry of the Ullmann reaction Journal of the American Chemical Society. 94: 4363-4364. DOI: 10.1021/Ja00767A067 |
0.366 |
|
| 1972 |
Cohen T, Deets GL. Trapping of picolyl cations in the reactions of 2- and 4-picoline N-oxide with acetic anhydride Journal of the American Chemical Society. 94: 932-938. DOI: 10.1021/Ja00758A035 |
0.351 |
|
| 1972 |
COHEN T, DANIEWSKI AR, DEEB MG, SHAW CK. ChemInform Abstract: BEZIEHUNG ZWISCHEN SUBSTITUTION UND ELIMINIERUNG BEI N-NITROSAMID-DESAMINIERUNGEN, ANWENDUNG VON NACH DEM GESCHWINDIGKEITSBESTIMMENDEN SCHRITT AUFTRETENDEN ISOTOPENEFFEKTEN Chemischer Informationsdienst. 3: no-no. DOI: 10.1002/Chin.197222138 |
0.314 |
|
| 1969 |
Cohen T, Daniewski AR. Stereochemistry of elimination in deamination of the trans-2-decalylamines Journal of the American Chemical Society. 91: 533-535. DOI: 10.1021/Ja01030A076 |
0.358 |
|
| 1967 |
Lewin AH, Zovko MJ, Rosewater WH, Cohen T. The use of complexing agents in the activation of copper for the Ullmann biaryl synthesis Chemical Communications (London). 80-81. DOI: 10.1039/C19670000080 |
0.301 |
|
| 1967 |
Lewin AH, Cohen T. Mechanism of the copperinduced Pschorr cyclization. New phenol synthesis involving hydroxylation of the intermediate radical by cupric ion The Journal of Organic Chemistry. 32: 3844-3850. DOI: 10.1021/Jo01287A027 |
0.401 |
|
| 1967 |
Cohen T, Deets GL. Reaction of 4-picoline N-oxide with acetic anhydride. Trapping of the cationic intermediate Journal of the American Chemical Society. 89: 3939-3940. DOI: 10.1021/Ja00991A070 |
0.365 |
|
| 1967 |
Hand E, Cohen T. Structural elucidation of the pentacyclic cinnoline obtained by the reaction of 1,4-naphthoquinone with hydrazine Tetrahedron. 23: 2911-2926. DOI: 10.1016/S0040-4020(01)83346-9 |
0.362 |
|
| 1966 |
Cohen T, Lewin AH. The Production of Organocopper Intermediates from Radicals in the Reactions of Aromatic Halides and Diazonium Ions with Cuprous Benzoate. New Synthetic Methods for Aryl Benzoates1 Journal of the American Chemical Society. 88: 4521-4522. DOI: 10.1021/Ja00971A048 |
0.412 |
|
| 1966 |
Lewin A, Dinwoodie A, Cohen T. 1,5-hydrogen transfer during diazonium ion decomposition—IV Tetrahedron. 22: 1527-1537. DOI: 10.1016/0040-4020(66)80142-4 |
0.436 |
|
| 1965 |
Cohen T, Song H. Nucleophilic Acylation Utilizing an Ylid Intermediate. A Simple Synthesis of Benzaldehyde-d11 Journal of the American Chemical Society. 87: 3780-3781. DOI: 10.1021/Ja01094A049 |
0.349 |
|
| 1965 |
Cohen T, Fager JH. The Reactions of 2- and 4-Picoline N-Oxide with Phenylacetic Anhydride1 Journal of the American Chemical Society. 87: 5701-5710. DOI: 10.1021/Ja00952A031 |
0.367 |
|
| 1965 |
Lewin AH, Cohen T. The mechanism of the Ullmann reaction. Detection of an organocopper intermediate. Tetrahedron Letters. 6: 4531-4536. DOI: 10.1016/S0040-4039(01)89057-2 |
0.309 |
|
| 1965 |
Cohen T, Song IH, Fager JH. A route to aldehydes and ketones by a four-electron decarboxylative oxidation utilizing pyridine N-oxide Tetrahedron Letters. 6: 237-241. DOI: 10.1016/S0040-4039(00)89946-3 |
0.374 |
|
| 1964 |
Cohen T, Lipowitz J. Acid-Catalyzed Amide Hydrolysis Assisted by a Neighboring Amide Group Journal of the American Chemical Society. 86: 5611-5616. DOI: 10.1021/Ja01078A041 |
0.32 |
|
| 1964 |
Cohen T, Jankowski E. Specifically Solvated Ion-Pair Intermediates in Nitrous Acid Deamination of an Axial Amine Journal of the American Chemical Society. 86: 4217-4218. DOI: 10.1021/Ja01073A077 |
0.309 |
|
| 1964 |
Cohen T, Lipowitz J. The Question of a Benzene Cation Insertion Reaction. A Novel Intramolecular Electrophilic Substitution Journal of the American Chemical Society. 86: 2515-2516. DOI: 10.1021/Ja01066A042 |
0.454 |
|
| 1964 |
Cohen T, Lipowitz J. A New Type of Cationic Intermediate from an Intramolecular Hydrogen Transfer Reaction Journal of the American Chemical Society. 86: 2514-2515. DOI: 10.1021/Ja01066A041 |
0.349 |
|
| 1962 |
Pinkus JL, Pinkus G, Cohen T. A Convenient Stereospecific Synthesis of Axial Amines in Some Steroidal, Decalyl, and Cyclohexyl Systems1 The Journal of Organic Chemistry. 27: 4356-4360. DOI: 10.1021/Jo01059A053 |
0.408 |
|
| 1961 |
Cohen T, Tsuji T. Communications-The Oxidation of Epoxides by Dimethyl Sulfoxide. A simple Synthesis of α-Hydroxy Ketones. The Journal of Organic Chemistry. 26: 1681-1681. DOI: 10.1021/Jo01064A079 |
0.341 |
|
| 1955 |
BERSON JA, COHEN T. SYNTHETIC APPROACHES TO IPECAC ALKALOIDS. II. A SYNTHESIS OF 4-CARBOMETHOXY-5-ETHYL-2-METHYLPYRIDINE1, 2 The Journal of Organic Chemistry. 20: 1461-1468. DOI: 10.1021/Jo01128A001 |
0.308 |
|
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