4-Amino-benzoic acid 6-[4-(4-methoxy-phenylazo)-phenoxy]-hexyl ester 、
4-{11-[4-(4-Methoxy-phenylazo)-phenoxy]-undecyloxy}-benzaldehyde 在
对甲苯磺酸 作用下,
以
甲苯 为溶剂,
生成 4-[(4-{11-[4-(4-methoxyphenylazo)phenoxy]undecyloxy}benzylidene)amino]benzoic acid 6-[4-(4-methoxyphenylazo)phenoxy]hexyl ester