Synthesis of substituted thiophenes and thiazolidines from 1-amino-2-benzoyl-2-(1-pyridinio)ethylene-1-thiolates
摘要:
It was found that alkylation of Z-isomers of 1-amino-2-benzoyl-2-(1-pyridinio)-ethylene-1-thiolate with phenacyl bromides proceeds regioselectively with formation of Z-isomers of bromides of 1-amino-2-benzoyl-2-(1-pyridinio)-1-phenacylthioethylenes, which are used in the synthesis of not easily accessible thiophenes and thiazolidines.