Process for production of 2-acetylbenzo[b]thiophene

摘要

A process for production of 2-acetylbenzo[b]thiophene represented by the formula (I): <IMAGE> comprising the steps of: (1) reacting 2-halogenobenzaldehyde represented by the formula (II): <IMAGE> wherein X represents a halogen atom, with a compound represented by the formula (III): HiSjMk wherein M represents an alkali metal, i represents zero or 1, j represents an integer of at least 1, and k represents an integer of 1 or 2, and preferably also with sulfur; and (2) reacting the reaction product with a monohalogenoacetone represented by the formula (IV) <IMAGE> wherein X1 represents a halogen atom.