Heterocyclische Verbindungen und Verfahren zu deren Herstellung

摘要

1342942 Thiazole derivatives FUJI PHOTO FILM CO Ltd 2 July 1971 [2 July 1970 19 Jan 1971] 31149/71 Heading C2C The invention comprises compounds of the general formula wherein X represents a -S-, -Se- or -CH = linkage; n is 2 or 3; and A represents the carbon or nitrogen atoms forming an optionally substituted heterocyclic ring structure. They may be prepared by heating together under reflux a compound of the general formula wherein R represents a methyl, ethyl or propyl group and a compound of the general formula (III) Br-(CH 2 ) n -Br.