N,N,N',N'-四甲基苯-1,3-二胺 、
2,3,4,5-四氯-6-[4-(二乙基氨基)-2-甲基苯甲酰]苯甲酸 在
乙酸酐 、
甲苯 作用下,
以afforded 3-(2,4-bis(dimethylamino)phenyl)-3-(2-methyl-4-(diethylamino)phenyl)-4,5,6,7-tetrachlorophthalide (I: X = (CH3)2N, Y2 = CH3, Y4 = (CH3CH2)2N, Z4 = Z5 = Z6 = Z7 = Cl) (m.p. 236°-238° C.; after slurrying in acetone, 237°-239° C.)的产率得到3-[2,4-二(二甲氨基)苯基]-4,5,6,7-四氯-3-[4-(二乙胺基)-o-苯甲基]苯酞