Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Hellmuth Erhardt"'
Publikováno v:
RSC Advances. 7:55594-55597
The synthesis of pyrazines is described using a sequence that begins with the diazidation of N-allyl malonamides followed by thermal or copper-mediated cyclization. The pyrazine products possess an ester and a hydroxy group at 2- and 3-positions of t
Publikováno v:
European Journal of Organic Chemistry. 2016:5629-5632
The thermolysis of geminal diazides derived from acylacetate compounds is an efficient tool for the rapid construction of the 1,3,4-oxadiazole core. While a broad range of ethyl esters undergoes smooth transformation to the desired heterocycles that
Autor:
Hellmuth Erhardt, Stefan F. Kirsch
Publikováno v:
Synthesis. 48:1437-1456
Geminal bis- and tristriazoles belong to a rare and mainly overlooked class of organic compounds with interesting properties. This review summarizes the methods for their preparation. Moreover, applications of these compounds are described, ranging f
Publikováno v:
Angewandte Chemie. 126:8047-8051
Drei einfache Methoden zur Synthese geminaler Triazide werden beschrieben: Ausgehend von 1) 3-Oxocarbonsauren, 2) Iodmethylketonen oder 3) terminalen Olefinen gelingt der Aufbau einer Reihe von Triazidomethylketonen unter milden, oxidativen Reaktions
Publikováno v:
Angewandte Chemie International Edition. 53:7913-7917
Three simple methods for the synthesis of geminal triazides are described: Starting from 1) 3-oxocarboxylic acids, 2) iodomethyl ketones, or 3) terminal olefins, a range of triazidomethyl ketones can be constructed under mild oxidative reaction condi
Publikováno v:
Organic letters. 19(1)
An operationally simple protocol for the rapid and efficient construction of highly substituted 3-hydroxypyridines is presented. The thermally induced cyclization of easily constructed geminal diazides derived from β-ketoesters having an additional
Autor:
Hellmuth Erhardt, Stefan F. Kirsch
Publikováno v:
ChemInform. 47
Geminal bis- and tristriazoles belong to a rare and mainly overlooked class of organic compounds with interesting properties. This review summarizes the methods for their preparation. Moreover, applications of these compounds are described, ranging f
Publikováno v:
ChemInform. 47
A range of geminal bis- and tristriazoles are presented. These rare and hardly studied compound classes were easily synthesized using ethyl 2,2-diazido-3-oxobutanoate as the common starting point. Firstly, CuAAC-reaction with an alkyne afforded the c
Autor:
Andreas P. Haering, Phillip Biallas, Stefan F. Kirsch, Markus Roggel, My Linh Tong, Martin Juebermann, Fabian Mohr, Hellmuth Erhardt, Andreas Kotthaus
Publikováno v:
ChemInform. 47
Autor:
Fabian Mohr, My Linh Tong, Phillip Biallas, Martin Jübermann, Stefan F. Kirsch, Andreas Kotthaus, Andreas P. Häring, Hellmuth Erhardt, Markus Roggel
Publikováno v:
The Journal of organic chemistry. 80(24)
Geminal diazides constitute a rare class of compounds where only a limited number of methods are available for their synthesis. We present the reaction of 1,3-dicarbonyl compounds (as exemplified by malonates, 3-oxoesters, and 1,3-diketones) with mol