反应详情

A mixture of 5-[2-(1-imidazolyl)ethoxy]benzo[b]thiophene-2-carboxylic acid methyl ester (0.35 g.) and concentrated hydrochloric acid (5 ml.) was heated on a steam bath for 5 hours and then evaporated. The residue was crystallized twice from ethanol/ether to give 5-[2-(1-imidazolyl)ethoxy]benzo[b]-thiophene-2-carboxylic acid hydrochloride hemihydrate (0.23 g.), m.p. 255°-258° C.

1. temperaturewas heated on a steam bath for 5 hours
2. customevaporated
3. customThe residue was crystallized twice from ethanol/ether