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