反应详情

A mixture of ethyl 4-chloro-6-ethoxy-7-methyl-1,8-naphthyridine-3-carboxylate (2.0 g), 4-aminophenoxy acetamide (1.13 g) and absolute ethanol (30 ml) was boiled under reflux for 1 hour and then cooled to ambient temperature. The mixture was filtered to give ethyl 4-[4-(carbamoylmethoxy)anilino]-6-ethoxy-7-methyl-1,8-naphthyridine-3-carboxylate hydrochloride, m.p. 215°-217° C.

1. temperatureunder reflux for 1 hour
2. filtrationThe mixture was filtered