作者:Schulze, K.、Richter, C.、Richter, F.、Mrozek, E.、Weisheit, R.、Achenbach, F.
DOI:——
日期:——
Preparation of substituted thiazoles
申请人:Fine Organics, Ltd.
公开号:US05705652A1
公开(公告)日:1998-01-06
A process for the preparation of a substituted thiazole comprises reacting an isothiocyanate compound of the general formula Hal.CH(R.sub.1). CH.dbd.C(R.sub.2).NCS in which Hal is a chlorine or bromine atom and R.sub.1 and R.sub.2 is each a hydrogen atom or an alkyl group containing 1 to 3 carbon atoms, in solution with a chlorinating or brominating agent. The compound 2-chloro-5-(chloromethyl) thiazole, which is an important intermediate in the manufacture of agrochemical and pharmaceutical products, may very advantageously be prepared by this method.