N,N'-bis(2-benzoyl-1-methylethylidene)ethylenediamine 、
(4-bromophenyl)diazonium chloride 在
sodium acetate 作用下,
以
乙醇 为溶剂,
以27%的产率得到(Z)-2-(4-Bromo-phenylazo)-3-{2-[(Z)-2-(4-bromo-phenylazo)-1-methyl-3-oxo-3-phenyl-propenylamino]-ethylamino}-1-phenyl-but-2-en-1-one