反应详情

Conc. sulfuric acid was added to a mixture of 2-amino-4,5,3',4'-tetramethoxybenzophenone, ethyl acetoacetate and acetic acid. The mixture was treated according to the same manner as in Reference Example 1 to give ethyl 4-(3,4-dimethoxyphenyl)-6,7-dimethoxy-2-methylquinoline-3-carboxylate (83%). This compound was recrystallized from ethanol. Colorless prisms, mp. 147°-148° C.

1. additionThe mixture was treated