Helmut Quast

Julius-Maximilians-Universität Würzburg, Würzburg, Bayern, Germany 
"Helmut Quast"
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Elias James Corey post-doc 1965-1966
Siegfried Hünig research scientist 1962-1964 Universität Würzburg
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Quast H, Seidenspinner H, Stawitz JW. (2013) 2,2′‐Bis‐azonia‐Cope Rearrangements of 2,3‐Homo‐6H‐1,4‐diazepinium Dications European Journal of Organic Chemistry. 2013: 4852-4862
Quast H, Philipp G, Ross K, et al. (2011) Stable 3‐Imino‐2,3‐dihydroindazol‐1‐yl Radicals European Journal of Organic Chemistry. 2011: 1891-1895
Quast H, Ross K, Philipp G. (2010) Thermal Rearrangements of (Arylimino)diaziridines by Simultaneous Cascades of Pericyclic Reactions European Journal of Organic Chemistry. 2010: 2212-2217
Dong H, Hrovat DA, Quast H, et al. (2009) Calculations of the relative energies of the low-lying electronic states of 2-methylenedihydrophenalene-1,3-diyl: effects of a 1,8-naphtho bridging group on trimethylenemethane and of a vinylidene bridging group on 1,8-naphthoquinodimethane. The Journal of Physical Chemistry. A. 113: 895-901
Quast H, Ross KH, Philipp G, et al. (2009) Syntheses and15N NMR Spectra of Iminodiaziridines - Ring-Expansions of 1-Aryl-3-iminodiaziridines to 1H- and 3aH-Benzimidazoles, 2H-Indazoles, and 5H-Dibenzo[d,f] [1,3]diazepines European Journal of Organic Chemistry. 3940-3952
Quast H, Nüdling W, Klemm G, et al. (2008) A perimidine-derived non-Kekulé triplet diradical. The Journal of Organic Chemistry. 73: 4956-61
Quast H, Bieber LW. (2008) Iminodiaziridines by regio- and stereoselective cyclization of diastereomeric singlet triazatrimethylenemethane diradicals generated through photolysis of 5-imino-4,5-dihydro-1H-tetrazoles. Journal of Organic Chemistry. 73: 3738-3744
Quast H, Aldenkortt S, Freudenreich B, et al. (2007) Synthesis, configuration, and (15)n NMR spectra of iminoaziridines. Synthons equivalent to three components of the Ugi reaction. The Journal of Organic Chemistry. 72: 1659-66
Quast H, Ach M, Hergenröther T, et al. (2006) 5-Alkylamino-1H-1,2,3-triazoles by Base-Mediated Cleavage of Cycloadducts of Azides to Cyclic Ketene N,N-Acetals Synthesis. 2006: 1943-1945
Quast H, Becker C, Witzel M, et al. (2006) Syntheses and Structures of 2,6‐Substituted Barbaralanes Liebigs Annalen. 1996: 985-997
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