Processes for the production of 5-chloro-2-(4,4-difluorobut-3-enylsulphonyl)thiazole

摘要

5-Chloro-2-(4,4-difluorobutenylthio)thiazole is prepared from 2-mercaptothiazole by a multistep process involving S-alkylation, chlorination and dehydrochlorination and is converted by oxidation to the corresponding sulfone which is useful as an agricultural nematicide.