John Warkentin - Publications

Affiliations: 
1959 Chemistry Iowa State University, Ames, IA, United States 

141 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2009 Warkentin J. 2,5-Dihydro-1,3,4-oxadiazoles and Bis(heteroatom-substituted)carbenes. Accounts of Chemical Research. 42: 205-12. PMID 18798653 DOI: 10.1021/Ar800072H  0.453
2008 Czardybon W, Sokol W, Warkentin J, Werstiuk NH. 6,7-diaza-1-methoxy- 5-methyl-2, 8-dioxabicyclo[3.2.1]oct-6-ene. An unstable bicyclic precursor of a dioxa carbonyl ylide and carbenes by ylide ring opening Journal of Physical Organic Chemistry. 21: 41-46. DOI: 10.1002/Poc.1280  0.419
2007 Sliwinska A, Warkentin J. Reactions of dimethoxycarbene with dimethyl 2,3-dicycanomaleate and fumarate. Organic Letters. 9: 2605-7. PMID 17542600 DOI: 10.1021/Ol071143U  0.343
2007 Sliwinska A, Czardybon W, Warkentin J. Zwitterion from a cyclopropane with geminal donor and acceptor groups. Organic Letters. 9: 695-8. PMID 17243711 DOI: 10.1021/Ol063021S  0.406
2007 Mlostón G, Warkentin J, Linden A, Heimgartner H. Reactions of dimethoxycarbene with N-tosylated imines Helvetica Chimica Acta. 90: 2024-2036. DOI: 10.1002/Hlca.200790210  0.371
2006 Sokol W, Warkentin J. Synthesis and thermolysis rate constants of diastereomeric oxadiazoline sources of acetoxy(methoxy)carbene - Reaction of acetoxy(methoxy)carbene with isocyanates Canadian Journal of Chemistry. 84: 927-933. DOI: 10.1139/V06-109  0.382
2006 Werstiuk NH, Klys A, Warkentin J. Pyrolysis of 2-methoxy-5,5-dimethyl-2-methylthio-2,5-dihydro[1,3,4] oxadiazole studied with photoelectron spectroscopy and DFT calculations - He(I) photoelectron spectrum of methoxy(methylthio)carbene Canadian Journal of Chemistry. 84: 546-554. DOI: 10.1139/V06-026  0.317
2005 Czardybon W, Warkentin J, Werstiuk NH. Density functional theory computational study on the thermal cycloreversion of 2-acetoxy-2-methoxy-5,5-dimethyl-Delta3-1,3,4-oxadiazoline: evidence for a carbonyl ylide intermediate. The Journal of Organic Chemistry. 70: 8431-6. PMID 16209588 DOI: 10.1021/Jo0511750  0.348
2005 Zhou H, Mloston G, Warkentin J. New thermal source of dimethoxycarbene leading to zwitterionic intermediates and 2:1 stoichiometry in reaction with electrophilic alkenes. Organic Letters. 7: 487-9. PMID 15673271 DOI: 10.1021/Ol040068+  0.395
2005 Klys A, Czardybon W, Warkentin J, Werstiuk NH. Reactions of acetoxy(methylthio)carbene and S-methyl thiopyruvate Canadian Journal of Chemistry. 83: 1360-1364. DOI: 10.1139/V05-151  0.348
2005 Klys A, Dawid M, Warkentin J. Synthesis and spectra of aldehyde- and ketone-O-(2,5-dihydro-2-methoxy-5,5- dimethyl-1,3,4-oxadiazol-2-yl)oximes - Thermal sources of some methoxy(oximino)carbenes Canadian Journal of Chemistry. 83: 443-448. DOI: 10.1139/V05-061  0.391
2005 Plazuk D, Warkentin J, Werstiuk NH. Reactions of allyloxy(methoxy)carbene in solution. Carbene rearrangement and Claisen rearrangement of the carbene dimer Tetrahedron. 61: 5788-5796. DOI: 10.1016/J.Tet.2005.04.024  0.406
2005 Czardybon W, Warkentin J, Werstiuk NH. Computational study of the thermal rearrangement of acetoxy(methoxy)carbene Journal of Physical Organic Chemistry. 18: 486-490. DOI: 10.1002/Poc.899  0.371
2005 Dawid M, Reid DL, Warkentin J, Mloston G. Reactions of dimethoxycarbene with carbon-sulfur double bonds Journal of Physical Organic Chemistry. 18: 86-89. DOI: 10.1002/Poc.857  0.423
2004 Klys A, Czardybon W, Warkentin J, Werstiuk NH. Synthesis and thermolysis of a spiro-fused oxadiazoline - Evidence for sequential formation of carbene and oxirane intermediates, and for oxirane dimerization Canadian Journal of Chemistry. 82: 1769-1773. DOI: 10.1139/V04-158  0.369
2003 Czardybon W, Klys A, Warkentin J, Werstiuk NH. 2-Acetoxy-2-methoxy-5,5-dimethyl-Δ3-1,3,4-oxadiazoline and acetoxy(methoxy)carbene Canadian Journal of Chemistry. 81: 1438-1442. DOI: 10.1139/V03-126  0.367
2003 Dawid M, Mloston G, Reid DL, Warkentin J. Reactions of dimethoxycarbene with thiocarbonyl compounds Canadian Journal of Chemistry. 81: 1025-1028. DOI: 10.1139/V03-124  0.36
2003 Dawid M, Warkentin J. Intramolecular reactions of dialkoxycarbenes with a carbonyl group Canadian Journal of Chemistry. 81: 598-606. DOI: 10.1139/V02-200  0.372
2002 Dawid M, Mloston G, Warkentin J. Relative reactivities of carbonyl and thiocarbonyl groups toward dimethoxycarbene: two new dimethoxythiiranes. Chemistry (Weinheim An Der Bergstrasse, Germany). 8: 2184-7. PMID 11981903 DOI: 10.1002/1521-3765(20020503)8:9<2184::Aid-Chem2184>3.0.Co;2-2  0.384
2002 Merkley N, Warkentin J. Thermolysis of a spiro-fused oxadiazoline: The carbonyl ylide-cyclic carbene-diradical sequence Canadian Journal of Chemistry. 80: 1187-1195. DOI: 10.1139/V02-126  0.435
2002 Lu X, Warkentin J. Ortho substituent effects on transfer of aryl groups from oxygen to carbon in adducts from diaryloxycarbenes and DMAD Canadian Journal of Chemistry. 80: 228-234. DOI: 10.1139/V02-012  0.367
2002 Merkley N, Reid DL, Warkentin J. Remarkable aromatic substitution by a 1,5-diradical Tetrahedron Letters. 43: 1927-1929. DOI: 10.1016/S0040-4039(02)00158-2  0.347
2001 Dawid M, Mlostoñ G, Warkentin J. The first 2,2-dialkoxythiirane. Organic Letters. 3: 2455-6. PMID 11483033 DOI: 10.1021/Ol016108G  0.376
2001 Lu X, Warkentin J. Mechanism of ipso aromatic substitution by reaction of aryloxy(methoxy)carbenes and diaryloxycarbenes with DMAD Canadian Journal of Chemistry. 79: 364-369. DOI: 10.1139/V01-029  0.395
2001 Merkley N, Venneri PC, Warkentin J. Cyclopropanation of benzylidenemalononitrile with dialkoxycarbenes and free radical rearrangement of the cyclopropanes Canadian Journal of Chemistry. 79: 312-318. DOI: 10.1139/V01-017  0.408
2001 Lu X, Reid DL, Warkentin J. Diaryloxycarbenes from oxadiazolines Canadian Journal of Chemistry. 79: 319-327. DOI: 10.1139/V01-016  0.384
2001 Dawid M, Venneri PC, Warkentin J. Epoxide of a ketene acetal. The first 2,2-dialkoxyoxirane to be isolated Canadian Journal of Chemistry. 79: 110-113. DOI: 10.1139/V00-202  0.399
2000 Pezacki JP, Loncke PG, Ross JP, Warkentin J, Gadosy TA. Silicon migration from oxygen to carbon and decarbonylation in methoxytriphenylsiloxycarbene. Organic Letters. 2: 2733-6. PMID 10964352 DOI: 10.1021/Ol006117+  0.606
2000 Venneri PC, Warkentin J. Reaction of dimethoxycarbene with strained cyclic carbonyl compounds Canadian Journal of Chemistry. 78: 1194-1203. DOI: 10.1139/V00-118  0.373
2000 Merkley N, Warkentin J. Benzyloxy(4-substituted benzyloxy)carbenes. Generation from oxadiazolines and fragmentation to radical pairs in solution Canadian Journal of Chemistry. 78: 942-949. DOI: 10.1139/V00-078  0.4
2000 Merkley N, El-Saidi M, Warkentin J. Radicals from fragmentation of benzyloxymethoxycarbenes in solution Canadian Journal of Chemistry. 78: 356-361. DOI: 10.1139/V00-021  0.423
2000 Reid DL, Warkentin J. Homolysis of allyloxy(hydroxy)carbene. A density functional theory and ab initio study Journal of the Chemical Society. Perkin Transactions 2. 1980-1983. DOI: 10.1039/B001033M  0.306
1999 Tae EL, Zhu Z, Platz MS, Pezacki JP, Warkentin J. Chemistry and Kinetics of Dipropylcarbene in Solution Journal of Physical Chemistry A. 103: 5336-5342. DOI: 10.1021/Jp990198D  0.6
1999 Pezacki JP, Couture P, Dunn JA, Warkentin J, Wood PD, Lusztyk J, Ford F, Platz MS. Rate constants for 1,2-hydrogen migration in cyclohexylidene and in substituted cyclohexylidenes Journal of Organic Chemistry. 64: 4456-4464. DOI: 10.1021/Jo990171Q  0.61
1999 Dunn JA, Pezacki JP, McGlinchey MJ, Warkentin J. Reactions of dimethoxycarbene with cyclic perchlorinated olefins and ketones Journal of Organic Chemistry. 64: 4344-4352. DOI: 10.1021/Jo9823846  0.652
1999 Pezacki JP, Shukla D, Lusztyk J, Warkentin J. Lifetimes of dialkylcarbocations derived from alkanediazonium ions in solution: Cyclohexadienyl cations as kinetic probes for cation reactivity Journal of the American Chemical Society. 121: 6589-6598. DOI: 10.1021/Ja9840807  0.608
1999 Lu X, Warkentin J. Ipso aromatic substitution from reaction of a carbene with DMAD Tetrahedron Letters. 40: 1483-1486. DOI: 10.1016/S0040-4039(98)02701-4  0.436
1998 Muchall HM, Werstiuk NH, Choudhury B, Ma J, Warkentin J, Pezacki JP. Thermolysis of 2,2-dimethoxy-5,5-dimethyl-Δ3-1,3,4-oxadiagoline studied with photoelectron spectroscopy. He(I) photoelectron spectrum of dimethoxycarbene Canadian Journal of Chemistry. 76: 238-240. DOI: 10.1139/V97-233  0.487
1998 Venneri PC, Warkentin J. Homolysis of carbenes. Free radicals from dialkoxycarbenes [1] Journal of the American Chemical Society. 120: 11182-11183. DOI: 10.1021/Ja982566H  0.303
1998 Pezacki JP, Wood PD, Gadosy TA, Lusztyk J, Warkentin J. Laser flash photolysis studies of oxygen and sulfur atom transfer reactions from oxiranes and thiiranes to singlet carbenes Journal of the American Chemical Society. 120: 8681-8691. DOI: 10.1021/Ja973469B  0.593
1998 Pezacki JP, Warkentin J, Wood PD, Lusztyk J, Yuzawa T, Gudmundsdóttir AD, Morgan S, Platz MS. Laser flash photolysis of 2-adamantane-2,31-[3H]-diazirine: A reinvestigation Journal of Photochemistry and Photobiology a: Chemistry. 116: 1-7. DOI: 10.1016/S1010-6030(98)00287-1  0.557
1998 Warkentin J. Intra- and Intermolecular Reactions of Nucleophilic Carbenes Macromolecular Symposia. 134: 167-176. DOI: 10.1002/Masy.19981340116  0.406
1997 Ross JP, Couture P, Warkentin J. Nucleophilic aromatic substitution with dialkoxycarbenes Canadian Journal of Chemistry. 75: 1331-1335. DOI: 10.1139/V97-159  0.399
1997 Couture P, Warkentin J. Chemistry of cyclic aminooxycarbenes Canadian Journal of Chemistry. 75: 1281-1294. DOI: 10.1139/V97-154  0.401
1997 Couture P, Warkentin J. Spiro-fysed 2-alkoxy-2-amino-Δ3-1,3,4-oxadiazolines. Synthesis and thermolysis to corresponding aminooxycarbenes Canadian Journal of Chemistry. 75: 1264-1280. DOI: 10.1139/V97-153  0.408
1997 Kassam K, Venneri PC, Warkentin J. Reactions of alkoxyaryloxycarbenes with tethered triple bonds: A new synthesis of substituted benzofurans Canadian Journal of Chemistry. 75: 1256-1263. DOI: 10.1139/V97-152  0.374
1997 Couture P, El-Saidi M, Warkentin J. Ketene acetals from thermolysis of aryloxy methoxy oxadiazolines. Evidence for carbonyl ylide intermediates Canadian Journal of Chemistry. 75: 326-332. DOI: 10.1139/V97-037  0.437
1997 Warkentin J, Woollard JMR. Photolysis of 5,5-dibenzyl-Δ3-1,3,4-oxadiazolines Canadian Journal of Chemistry. 75: 289-307. DOI: 10.1139/V97-033  0.332
1997 Kassam K, Warkentin J. Reactions of dialkoxycarbenes with tethered triple bonds to form heterocyclic compounds Canadian Journal of Chemistry. 75: 120-128. DOI: 10.1139/V97-016  0.414
1997 Couture P, Pole DL, Warkentin J. Reactions of nucleophilic carbenes with enols Journal of the Chemical Society. Perkin Transactions 2. 1565-1570. DOI: 10.1039/A700169J  0.386
1997 Pole DL, Warkentin J. Formation and Rearrangement of a 2,2-Dimethoxyoxirane from Dimethoxycarbene and Fluorenone Journal of Organic Chemistry. 62: 4065-4067. DOI: 10.1021/Jo970198E  0.4
1997 Pezacki JP, Wagner BD, Lew CSQ, Warkentin J, Lusztyk J. Δ3-1,3,4-oxadiazolines: Photochemical precursors to diazoalkanes and sec-alkanediazonium ions in acidic solution Journal of the American Chemical Society. 119: 1789-1790. DOI: 10.1021/Ja962550W  0.531
1997 Pezacki JP, Pole DL, Warkentin J, Chen T, Ford F, Toscano JP, Fell J, Platz MS. Laser flash and dual wavelength photolysis of 3,4-diaza-2,2-dimethoxy-1-oxa[4.5]spirooct-3-ene. Migration of hydrogen and carbon in cyclobutylidene and in the excited state of its precursor Journal of the American Chemical Society. 119: 3191-3192. DOI: 10.1021/Ja961933R  0.544
1996 Er HT, Pole DL, Warkentin J. (Alkylthio)- and (phenylthio)methoxycarbenes from oxadiazolines Canadian Journal of Chemistry. 74: 1480-1489. DOI: 10.1139/V96-165  0.448
1996 Pole DL, Sharma PK, Warkentin J. Methoxy-(2-trimethylsilyl)ethoxycarbene. Reactions with Michael acceptors, with hydroxylic compounds, and with miscellaneous functional groups Canadian Journal of Chemistry. 74: 1335-1340. DOI: 10.1139/V96-149  0.429
1996 Suh D, Pole DL, Warkentin J, Terlouw JK. Intramolecular 1,2-alkyl shifts in unsymmetric dialkoxcycarbenes studied by very low vapour pressure (VLVP) pyrolysis - Mass spectrometry Canadian Journal of Chemistry. 74: 544-558. DOI: 10.1139/V96-059  0.306
1996 Colomvakos JD, Egle I, Ma J, Pole DL, Tidwell TT, Warkentin J. [2 + 2], [4 + 1], and [4 + 2] cycloaddition reactions of silylated bisketenes Journal of Organic Chemistry. 61: 9522-9527. DOI: 10.1021/Jo961169R  0.401
1996 and RG, Wudl F, Pole DL, Sharma aPK, Warkentin J. An Unusual Addition−Rearrangement of a Dialkoxycarbene to C60: Exclusion of Methanofullerene Products Journal of Organic Chemistry. 61: 5837-5839. DOI: 10.1021/Jo9603136  0.328
1996 De Meijere A, Kozhushkov SI, Yufit DS, Boese R, Haumann T, Pole DL, Sharma PK, Warkentin J. Cyclopropyl building blocks for organic synthesis, 36: Unprecedented addition of dialkoxycarbenes to tetrasubstituted alkenes: Bicyclopropylidene and 2-chlorocyclopropylideneacetate Liebigs Annales. 601-612. DOI: 10.1002/Jlac.199619960421  0.408
1995 Tomaszewski M, Warkentin J, Werstiuk N. Free-Radical Chemistry of Imines Australian Journal of Chemistry. 48: 291-321. DOI: 10.1071/Ch9950291  0.37
1995 Sharma PK, Warkentin J. Generation and trapping of a silyloxy carbonyl ylide Tetrahedron Letters. 36: 7591-7594. DOI: 10.1016/0040-4039(95)01591-5  0.362
1995 Pole DL, Warkentin J. Carbon–oxygen bond insertion in the reaction of dialkoxycarbenes with anhydrides Liebigs Annalen. 1995: 1907-1914. DOI: 10.1002/Jlac.1995199511269  0.413
1994 Kassam K, Warkentin J. Thermolysis of 2-(3-Butyn-1-oxy)-2-methoxy-5,5-dimethyl-.DELTA.3-1,3,4-oxadiazoline in Solution. A remarkable Cascade of Carbene and Other Reactions Journal of Organic Chemistry. 59: 5071-5075. DOI: 10.1021/Jo00096A062  0.392
1994 Zoghbi M, Horne SE, Warkentin J. Intermolecular Reactions of .beta.-Lactam-4-ylidenes with Alkenes, Alcohols, and Acetic Acid. Spiro-Fused .beta.-Lactam Cyclopropanes, 4-Alkoxy .beta.-Lactams, and a 4-Acetoxy .beta.-Lactam Journal of Organic Chemistry. 59: 4090-4095. DOI: 10.1021/Jo00094A017  0.323
1994 Jefferson EA, Warkentin J. Thermal rearrangements and reactions of 5-alkyl-1,2,3,4,5-pentakis(methoxycarbonyl)cyclopentadienes Journal of Organic Chemistry. 59: 463-467. DOI: 10.1021/Jo00081A029  0.403
1994 Jefferson EA, Warkentin J. Studies of thermal rearrangements of methyl 3-alkyl-3-methyl-3H-pyrazole-5-carboxylates. Concerted, stepwise, and unclassified mechanisms Journal of Organic Chemistry. 59: 455-462. DOI: 10.1021/Jo00081A028  0.369
1993 Zoghbi M, Warkentin J. Spiro-fused β-lactam oxadiazolines by formal [2+2] cycloaddition of 2-imino-Δ3-1,3,4-oxadiazolines to ketenes Canadian Journal of Chemistry. 71: 912-918. DOI: 10.1139/V93-121  0.347
1993 Zoghbi M, Warkentin J. Substituent effects of rate constants for thermal [4π + 2π] cycloreversion of spiro-fused β-lactam oxadiazolines Canadian Journal of Chemistry. 71: 907-911. DOI: 10.1139/V93-120  0.349
1993 Tomaszewski MJ, Warkentin J. O,O′-bistributyltin benzopinacolate (1,1,2,2-tetraphenylethane-1,2- bisolate) as thermal source of tributylstannyl radicals Journal of the Chemical Society, Chemical Communications. 1407-1408. DOI: 10.1039/C39930001407  0.383
1993 Tomaszewski MJ, Warkentin J. Chiral induction in aryl radical cyclization to the aldimino functional group Journal of the Chemical Society, Chemical Communications. 966-968. DOI: 10.1039/C39930000966  0.395
1992 Zoghbi M, Warkentin J. Spiro fused β-lactam cyclopropenes Canadian Journal of Chemistry. 70: 2967-2971. DOI: 10.1139/V92-378  0.317
1992 Zoghbi M, Warkentin J. Azetinone formation is not competitive with intermolecular reactions of a β-lactam-4-ylidene Canadian Journal of Chemistry. 70: 2792-2797. DOI: 10.1139/V92-355  0.339
1992 Jefferson EA, Warkentin J. Studies of "formal" [1,5]-sigmatropic thermal rearrangements of dimethyl 3-alkyl-3-methyl-3H-pyrazole-4,5-dicarboxylates and dimethyl 4-alkyl-5-methyl-4H-pyrazole-3,4-dicarboxylates Journal of the American Chemical Society. 114: 6318-6325. DOI: 10.1021/Ja00042A007  0.356
1992 Tomaszewski MJ, Warkentin J. Rate constants for aryl radical cyclization to aldimines: synthesis of tetrahydroisoquinolines by fast 6-endo closures to carbon Tetrahedron Letters. 33: 2123-2126. DOI: 10.1016/0040-4039(92)88156-Y  0.415
1991 Békhazi M, Lawrynowicz W, Warkentin J. Reaction of carbonyl ylides with chloroform Canadian Journal of Chemistry. 69: 1507-1510. DOI: 10.1139/V91-222  0.392
1991 Mathew L, Osei-Twum EY, Warkentin J. Thermolysis of α-hydroperoxyalkyl diazenes. Spin trapping of radical intermediates and spin trapping kinetics Canadian Journal of Chemistry. 69: 1398-1402. DOI: 10.1139/V91-206  0.322
1991 Frampton CS, Majchrzak MW, Warkentin J. Sense of sequential 1,5-sigmatropic rearrangements of dimethyl-3,3-dialkyl-3H-pyrazole-4,5-dicarboxylates. Crystal and molecular structures of two dimethyl-4,5-dialkyl-1H-pyrazole-1,3-dicarboxylates Canadian Journal of Chemistry. 69: 373-378. DOI: 10.1139/V91-057  0.328
1991 Majchrzak MW, Warkentin J, Woollard JMKR. Synthesis and thermolysis of tetrasubstituted cyclopropenes Structural Chemistry. 2: 137-146. DOI: 10.1007/Bf00676625  0.411
1990 Kunka CPA, Warkentin J. Facile 5-endo ring closures to the azo group. A free radical synthesis of indazoles Canadian Journal of Chemistry. 68: 575-580. DOI: 10.1139/V90-088  0.404
1990 Majchrzak MW, Warkentin J. Cycloadditions of 2-diazopropane to bicyclo[2.2.1]hept-2-enes. Direct experimental evidence for an asynchronous mechanism Journal of Physical Organic Chemistry. 3: 339-345. DOI: 10.1002/Poc.610030511  0.359
1989 Majchrzak MW, Warkentin J. Thermolysis of 2-acyloxy-Δ3-1,3,4-oxadiazolines. Evidence for a preferred sense of cycloreversion to carbonyl ylides and for fast 1,4-sigmatropic ylide rearrangement Canadian Journal of Chemistry. 67: 1753-1759. DOI: 10.1139/V89-271  0.38
1988 Schwan AL, Warkentin J. The synthesis and unimolecular decomposition of four novel Δ1-1,2,4-triazolines Canadian Journal of Chemistry. 66: 2285-2293. DOI: 10.1139/V88-362  0.67
1988 Wang S, Warkentin J. Alkylation of tert-butyl lithiohydrazones of aldehydes and ketones Canadian Journal of Chemistry. 66: 2256-2258. DOI: 10.1139/V88-358  0.402
1988 Schwan AL, Warkentin J. The reactions of simple dimethylallylamines with dimethyl acetylenedicarboxylate. Formation of 1-dimethylamino-2-allylmaleates via formal allyl transfer Canadian Journal of Chemistry. 66: 1686-1694. DOI: 10.1139/V88-273  0.659
1988 Schwan AL, Warkentin J. Thermal intramolecular reactions of Δ1-1,2,4-triazolines with extended exocyclic unsaturation Canadian Journal of Chemistry. 66: 385-390. DOI: 10.1139/V88-067  0.658
1988 Schwan AL, Warkentin J. Enaminic reactions of 4-tert-butyl-3,3-dimethyl-5-methylene-Δ1-1,2,4-triazoline. Novel heterocycles by sequential [2 + 2] cycloaddition and ylide-forming [3 + 2] cycloreversion Canadian Journal of Chemistry. 66: 155-161. DOI: 10.1139/V88-024  0.658
1988 Mathew L, Warkentin J. Rate constants for abstraction of bromine from bromotrichloromethane by butyl, cyclopropylmethyl, and phenyl radicals in solution Canadian Journal of Chemistry. 66: 11-16. DOI: 10.1139/V88-002  0.387
1987 Schwan AL, Warkentin J. Reactions of 4tertbutyl5methylene33dimethylδ1124triazoline with dimethyl acetylenedicarboxylate Canadian Journal of Chemistry. 65: 1200-1204. DOI: 10.1139/v87201  0.595
1987 Lakhani C, Mathew L, Warkentin J. Rate constant for hydroxylation of a primary alkyl radical by induced decomposition of an alpha hydroperoxyalkyl diazene Canadian Journal of Chemistry. 65: 1748-1752. DOI: 10.1139/V87-294  0.358
1987 Schwan AL, Warkentin J. Reactions of 4-tert-butyl-5-methylene-3,3-dimethyl-Δ1-1,2,4-triazoline with dimethyl acetylenedicarboxylate Canadian Journal of Chemistry. 65: 1200-1204. DOI: 10.1139/V87-201  0.676
1987 Fulton JB, Warkentin J. Reactions of diazoalkanes with isocyanates. Synthesis of imidazolidine24diones oxindoles and oxazolidinones Canadian Journal of Chemistry. 65: 1177-1184. DOI: 10.1139/V87-197  0.416
1987 Jewell DR, Mathew L, Warkentin J. Rate constant for chlorine abstraction from CCl4 by the 5-hexenyl radical Canadian Journal of Chemistry. 65: 311-315. DOI: 10.1139/V87-052  0.37
1987 Beckwith ALJ, Wang S, Warkentin J. Intramolecular radical additions to the azo group. Fast and indiscriminate 5-exo and 6-endo cyclizations Journal of the American Chemical Society. 109: 5289-5291. DOI: 10.1021/Ja00251A050  0.368
1986 Schwan AL, Warkentin J. A novel 3,4-dihydro-5-methylene-1,2,4-triazole and its reactions with acrylonitrile and sulphene (thioformaldehyde S,S-dioxide) to form spiroaziridines Journal of the Chemical Society, Chemical Communications. 1721-1722. DOI: 10.1039/C39860001721  0.641
1984 Békhazi M, Smith PJ, Warkentin J. Substituent effects on rates of formation of methoxy-substituted carbonyl ylides from 2-aryl-2-methoxy- and 5-aryl-2-methoxy-Δ3-1,3,4-oxadiazolines Canadian Journal of Chemistry. 62: 1646-1652. DOI: 10.1139/V84-282  0.407
1984 Keus D, Warkentin J. Equilibrium configurations of azines of esters Journal of Organic Chemistry. 49: 3466-3469. DOI: 10.1002/Chin.198509071  0.303
1984 Keus D, Kaminski M, Warkentin J. Carbene reactions with cis azo functions. Formation of ester azines from Δ3-1,3,4-oxadiazolines Journal of Organic Chemistry. 49: 343-347. DOI: 10.1002/Chin.198426132  0.352
1983 Chatgilialoglu C, Ingold KU, Tse-Sheepy I, Warkentin J. A homoallyl radical rearrangement. Kinetics of the isomerization of the 2,2-dimethyl-3-buten-1-yl radical to the 1,1-dimethyl-3-buten-1-yl radical Canadian Journal of Chemistry. 61: 1077-1081. DOI: 10.1139/V83-190  0.394
1983 Békhazi M, Warkentin J. Carbonyl ylides and carbenes from thermolysis of oxadiazolines. Substituent effects on intramolecular and intermolecular reactions of carbonyl ylides Canadian Journal of Chemistry. 61: 619-624. DOI: 10.1139/V83-112  0.386
1983 Békhazi M, Warkentin J. Reactions of carbenes with acetone. Reversible thermal formation and fragmentation of carbonyl ylides and their cycloaddition to acetone Journal of the American Chemical Society. 105: 1289-1292. DOI: 10.1021/Ja00343A035  0.395
1983 Bekhazi M, Risbood PA, Warkentin J. Generation and chemical properties of dicyclopropylcarbene. Ring expansion, chlorine abstraction, carbon-hydrogen bond insertion, and alkene addition reactions Journal of the American Chemical Society. 105: 5675-5679. DOI: 10.1002/Chin.198348113  0.371
1982 Bekhazi M, Warkentin J. Additions and Corrections - Thermolysis of 2-Methoxy-2,5,5-trimethyl-Δ3-1,3,4-oxadiazoline. Carbenes from Thermal Fragmentation of a Carbonyl Ylide Intermediate Journal of the American Chemical Society. 104: 1157-1157. DOI: 10.1021/Ja00368A608  0.349
1981 Cabelkova-Taguchi LM, Warkentin J. Photolysis of 5,5-dimethyl-4-phenyl-Δ-1,2,4-triazolin-3-one. Fragmentation to nitrogen, carbon monoxide, and isopropylidene phenyl amine Canadian Journal of Chemistry. 59: 3087-3089. DOI: 10.1139/V81-451  0.371
1981 Paine AJ, Warkentin J. A relative extrusibility scale and its application to the thermal fragmentation patterns of 5-membered ring diazenes Canadian Journal of Chemistry. 59: 491-505. DOI: 10.1139/V81-070  0.378
1981 Cabelkova-Taguchi LM, Warkentin J. Thermolysis of 5,5-dimethyl-4-aryl-Δ1-1,2,4-triazolin-3-ones in solution. Products, kinetics, substituent effects, and solvent effects Canadian Journal of Chemistry. 59: 100-105. DOI: 10.1139/V81-016  0.356
1981 Bekhazi M, Warkentin J. Thermolysis of 2-methoxy-2,5,5-trimethyl-.DELTA.3-1,3,4-oxadiazoline. Carbenes from thermal fragmentation of a carbonyl ylide intermediate Journal of the American Chemical Society. 103: 2473-2474. DOI: 10.1021/Ja00399A084  0.344
1981 Bekhazi M, Warkentin J. Thermolysis of 2-methoxy-2,5,5-trimethyl-.DELTA.3-1,3,4-oxadiazoline. Carbenes from thermal fragmentation of a carbonyl ylide intermediate Cheminform. 12. DOI: 10.1002/Chin.198133120  0.344
1980 Ingold KU, Warkentin J. A homopropargyl radical rearrangement. Kinetics of the rearrangement of the 2,2,5,5,-tetramethyl-3-hexyn-1-yl radical Canadian Journal of Chemistry. 58: 348-352. DOI: 10.1139/V80-056  0.375
1980 Weigl S, Warkentin J. Thermal rearrangement of 5,6,6-triphenylbicyclo[3.1.0]hex-2-ene to 6,7-benzo-1,5-diphenyltricyclo[3.2.1.02,8]octane Canadian Journal of Chemistry. 58: 210-213. DOI: 10.1139/V80-034  0.371
1980 Yeung DWK, Warkentin J. Synthetic applications of α-hydroxydiazenes. III. Uncatalyzed and phenol catalyzed hydroalkylation of alkenes and of azobenzene with alkylazodiphenylmethanols Canadian Journal of Chemistry. 58: 2386-2393. DOI: 10.1002/Chin.198114138  0.36
1979 Paine AJ, Warkentin J. Ketone or diazoalkane formation from Δ3-1,3,4-oxadiazolin-2-ones. Details of two competing thermolysis mechanisms Canadian Journal of Chemistry. 57: 2681-2695. DOI: 10.1139/V79-435  0.404
1978 MacAlpine GA, Warkentin J. Thermolysis of Δ3-1,3,4-oxadiazolin-2-ones and 2-phenylimino-Δ3-1,3,4-oxadazolines derived from α,β-epoxyketones. An alternative method for the convers of α,β-epoxyketones to alkynones and alkynals Canadian Journal of Chemistry. 56: 308-315. DOI: 10.1139/V78-048  0.307
1978 Cabelkova-Taguchi LM, Warkentin J. Oxidative cyclization of carbonyl derivatives. 5-Imino-Δ1-1,2,4-triazolines from alkylideneimino guanidines Canadian Journal of Chemistry. 56: 2194-2196. DOI: 10.1002/Chin.197850232  0.331
1977 Frost DC, Westwood NPC, Werstiuk NH, Cabelkova-Taguchi L, Warkentin J. Preparation and fate of carbon monosulfide (CS). Ultraviolet photoelectron spectroscopic study of the thermolysis of 5,5-dimethyl-1-phenyl-Δ3-1,3,4-triazoline-2-thione Canadian Journal of Chemistry. 55: 3677-3680. DOI: 10.1139/V77-515  0.347
1977 Weigl S, Warkentin J. Photoisomerization of 1-triphenylmethylcyclopentadiene. Di-π-methane rearrangement to 5,6,6-triphenylbicyclo[3.1.0]hex-2-ene Canadian Journal of Chemistry. 55: 29-33. DOI: 10.1002/Chin.197719120  0.326
1976 Ramakrishnan K, Fulton JB, Warkentin J. Mechanism of thermolysis of 2-hydrazono-Δ3-1,3,4-oxadiazolines to diazetidinium hydroxide inner salts. Evidence for an N-isocyanatoimine intermediate and its novel reaction with phenylisocyanate Tetrahedron. 32: 2685-2688. DOI: 10.1016/0040-4020(76)80106-8  0.384
1976 Yeung DWK, Warkentin J. Synthesis and radical decomposition of α-hydroxydiazenes. II. tert-Butylazodiphenylcarbinol Canadian Journal of Chemistry. 54: 1349-1354. DOI: 10.1002/Chin.197640174  0.394
1976 Yeung DWK, Warkentin J. Synthetic application of α-hydroxydiazene systems. II. Uncatalyzed and phenol catalyzed radical chain hydro-tert-butylation of unsaturated compounds with tert-butylazodiphenylcarbinol Canadian Journal of Chemistry. 54: 1345-1348. DOI: 10.1002/Chin.197640173  0.395
1976 Knittel P, Warkentin J. Synthetic application of α-hydroxydiazene systems. I. Esters from radical chain reactions of unsaturated compounds with 2-hydroxy-2,5,5-trimethyl-Δ3-1,3,4-oxadiazoline Canadian Journal of Chemistry. 54: 1341-1344. DOI: 10.1002/Chin.197640172  0.408
1975 Knittel P, Warkentin J. 2-Hydroxy-2,5,5-trimethyl-Δ3-1,3,4-oxadiazoline. Novel Induced Decomposition by Radical Attack at the Hydroxyl Group Canadian Journal of Chemistry. 53: 2275-2278. DOI: 10.1139/V75-319  0.408
1975 Knittel P, Warkentin J. 2-Hydroxy-2,5,5-Trimethyl-Delta(3)-1,3,4-Oxadiazoline, Novel Induced Decomposition By Radical Attack At The Hydroxyl Group Cheminform. 6. DOI: 10.1002/Chin.197547126  0.338
1974 Calvo C, Ip PC, Krishnamachari N, Warkentin J. Crystal Structure of 1-(Bis-p-chlorophenyl)methylene-3-oxo-4,4-dimethyl-1,2-diazetidmium Hydroxide, Inner Salt, C17H14Cl2N2O Canadian Journal of Chemistry. 52: 2613-2617. DOI: 10.1139/V74-381  0.324
1973 Lui H, Warkentin J. Radical Substitutions of Azo Compounds Canadian Journal of Chemistry. 51: 1148-1149. DOI: 10.1139/V73-171  0.403
1973 Thorpe JW, Warkentin J. Stereochemical and Steric Effects in Nucleophilic Substitution of α-Halo Ketones Canadian Journal of Chemistry. 51: 927-935. DOI: 10.1139/V73-137  0.429
1973 Clark FRS, Warkentin J. Carbonium Ion Rearrangement with Retention at the Migration Terminus Canadian Journal of Chemistry. 51: 4090-4094. DOI: 10.1002/Chin.197414188  0.343
1972 Cox RA, Thorpe JW, Warkentin J. Hydrogen Isotope Exchange in 2-Butanone. Further Measurements and Some Comments Canadian Journal of Chemistry. 50: 3239-3241. DOI: 10.1139/V72-516  0.305
1972 Cox RA, Warkentin J. Kinetics of Bromination of Acetone, Bromoacetone, and 1,1-Dibromoacetone Canadian Journal of Chemistry. 50: 3233-3238. DOI: 10.1139/V72-515  0.55
1972 Werstiuk NH, Vancas I, Warkentin J, Clark FRS. Addition of ICl to Norbornene. The Preparation and Photochemical Isomerization of syn-7-Iodonorbornene Canadian Journal of Chemistry. 50: 291-295. DOI: 10.1139/V72-042  0.337
1970 Warkentin J, Hine KE. Isobutane from acid-catalyzed dehydration of butanols Canadian Journal of Chemistry. 48: 3545-3548. DOI: 10.1139/V70-593  0.319
1970 CAMERON AM, WEST PR, WARKENTIN J. ChemInform Abstract: OXYDATIONSRK. MIT BLEITETRAACETAT 3. MITT. CYCLISIERUNG VON KETOSEMICARBAZONEN ZU 2-IMINO-DELTA(3)-1,3,4-OXADIAZOLINEN Chemischer Informationsdienst. Organische Chemie. 1: no-no. DOI: 10.1002/Chin.197008179  0.581
1969 Gubelt GB, Warkentin J. Oxidation with lead tetraacetate. IV. Cyclization of phenylhydrazones of levulinic acid, levulinanilide, 5-ketohexanoic acid, 4-keto-1-pentanol, and of levulinic acid oxime Canadian Journal of Chemistry. 47: 3983-3987. DOI: 10.1139/V69-663  0.329
1969 West PR, Warkentin J. Thermolysis of 5,5-diaryl-2-phenylimino-.DELTA.3-1,3,4-oxadiazolines The Journal of Organic Chemistry. 34: 3233-3237. DOI: 10.1021/jo01263a003  0.506
1969 Cameron AM, West PR, Warkentin J. Oxidations with lead tetraacetate. III. Cyclization of ketosemicarbazones to 2-imino-Δ3-1,3,4-oxadiazolines Journal of Organic Chemistry. 34: 3230-3233. DOI: 10.1021/Jo01263A002  0.579
1969 West PR, Warkentin J. Thermolysis of 5,5-diaryl-2-phenylimino-Δ3-1,3,4-oxadiazolines Journal of Organic Chemistry. 34: 3233-3237.  0.527
1968 West PR, Warkentin J. Oxidations with lead tetraacetate. II. .DELTA.3-1,3,4-Oxadiazolines from oxocarbohydrazones and a .DELTA.3-1,3,4-thiadiazoline from acetone thiocarbohydrazone The Journal of Organic Chemistry. 33: 2089-2094. DOI: 10.1021/jo01269a083  0.517
1968 Warkentin J, Cox RA. Acetate-catalyzed enolization of 2-butanone Journal of Organic Chemistry. 33: 1301-1303. DOI: 10.1021/Jo01267A105  0.386
1967 Warkentin J, West PR. Oxidations with lead tetraacetate. I. Cyclization of ketocarbohydrazones to 3-ketimino-Δ1-1,2,4 tria-3-ones Tetrahedron Letters. 8: 490.  0.543
1966 Warkentin J, West PB. Oxidations with lead tetraacetate. I. Cyclization of ketocarbohydrazones to 3-ketimino-Δ1-1,2,4-triazolin-3-ones Tetrahedron Letters. 7: 5815-5820. DOI: 10.1016/S0040-4039(00)76089-8  0.302
1961 Hammond GS, Warkentin J. The addition of deuterium bromide to 1,3-cyclohexadiene Journal of the American Chemical Society. 83: 2554-2559. DOI: 10.1021/Ja01472A030  0.51
1960 Hammond GS, Chin-Hua SWU, Trapp OD, Warkentin J, Keys RT. The mechanism of decomposition of azo compounds. II. Cage effects in the decomposition of α,α′'-azoisobutyronitrile and related compounds Journal of the American Chemical Society. 82: 5394-5399. DOI: 10.1021/Ja01505A026  0.466
1956 Dunn GE, Warkentin J. AN ISOTOPIC STUDY OF THE REDUCING ACTION OF THE GRIGNARD REAGENT Canadian Journal of Chemistry. 34: 75-84. DOI: 10.1139/V56-007  0.319
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