Patent ID: 6774245
Filing Date: 2004-08-10
Classification: C07D

Abstract:
A method of producing a 3-hydroxymethyl-benzo[b]thiophene derivative represented by the formula (II): wherein, R1 to R3 are, same or independently, a hydrogen atom, an alkyl group having 1 to 4 carbons, a trihalomethyl group, an alkoxy group having 1 to 4 carbons, an alkylthio group having 1 to 4 carbons, or a trihalomethoxy group,comprising reacting a hydrogenating agent with a compound represented by the formula (I): wherein, R1 to R3 are, same or independently, a hydrogen atom, an alkyl group having 1 to 4 carbons, a trihalomethyl group, an alkoxy group having 1 to 4 carbons, an alkylthio group having 1 to 4 carbons, or a trihalomethoxy group; and X is a halogen atom, a hydroxy group, or an acyloxy group having 1 to 9 carbons, thereby to attain the selective hydrogenation of the substituent X alone.