反应详情

Analogously to Example 1, by using equivalent quantities, reacting N-(p-chlorobenzoyl)-4-(2,6-dimethylanilino)butyric acid and methyl 4-aminobutyrate and suitable processing produces methyl N-[N-(p-chlorobenzoyl)-4-(2,6-dimethylanilino)butyryl]-4-aminobutyrate (oil), saponification of which and processing of the reaction product yields N-[N-(p-chlorobenzoyl)-4-(2,6-dimethylanilino)butyryl]-4-aminobutyric acid (M.P. 141° to 142°).