反应详情

Heat three grams of methyl 5-bromo-3-phenylbenzo [b ]thiophene-2-carboxylate in a mixture of 50 ml. of methanol and 30 ml. of 10% sodium hydroxide, under reflux for 1 hour. Add concentrated hydrochloric acid to yield the title compound as a precipitate. Recrystallize from benzene; m.p. 265°-266°.

1. additionin a mixture of 50 ml