反应详情

By the reaction of 7-(3-bromopropoxy)-3,4-dimethylcoumarin with 4-oximino-piperidine hydrochloride in dioxane solution in the presence of a Hunig base, there is obtained 3,4-dimethyl-7-[3-(4-oximino-piperidino)-propoxy]-coumarin (m.p. 198°-200° C.), from which, by catalytic hydrogenation over Raney nickel in ammoniacal methanol, there is obtained 7-[3-(4-amino-piperidino)-propoxy]-3,4-dimethyl-coumarin; m.p. 92°-94° C.