An efficient scalable synthesis of 2-halothiazolium-type peptidecouplingreagents has been developed. The key step is the formation of the 2-bromothiazole scaffold through cyclization of α-thiocyanato ketones with hydrogen bromide. Using this method, the new couplingreagent 2-bromo-N-methylthiazolium bromide (BMTB) was synthesized. BMTB was tested in a difficult model coupling reaction of two sterically
N-alkylierte Thiazoliumsalze und Verfahren zu deren Herstellung
申请人:Bayer Chemicals AG
公开号:EP1371651A3
公开(公告)日:2004-03-17
Die vorliegende Erfindung betrifft N-alkylierte Thiazoliumsalze, ein Verfahren zu ihrer Herstellung sowie die Verwendung als Kondensations- und Dehydratisierungsmittel.
本发明涉及N-烷基化噻唑盐,其制备方法以及作为缩合和脱水剂的用途。
N-alkylated thiazolium salts and process for their preparation
申请人:——
公开号:US20040019219A1
公开(公告)日:2004-01-29
The present invention relates to N-alkylated thiazolium salts, to a process for their preparation and also to their use as condensation and dehydrating agents.