The orientation of chlorination and bromination of N, N-disubstituted benzamides in aqueous acetic acid is strongly influenced by the nature of the alkyl groups at the nitrogen atom. With large groups, the halogenation takes place fairly selectively at the ortho/para positions.
N, N-二取代苯甲酰胺在乙酸水溶液中的氯化和溴化方向受氮原子上烷基性质的强烈影响。对于大基团,卤化在邻/对位发生相当有选择性。