2-(2-chloro-4-(diethylamino)-benzoyl)benzoic acid 、
N,N,N',N'-Tetraethyl-m-phenylendiamin 、
乙酸酐 以
甲醇 为溶剂,
反应 16.0h,
以affording 3-(2,4-bis(diethylamino)phenyl)-3-(2-chloro-4-(diethylamino)phenyl)phthalide (I: X = Y4 = (CH3CH2)2N, Y2 = Cl, Z4 = Z5 = Z6 = Z7 = H) (3.94 g., m.p. 141°-143° C.)的产率得到3-(2,4-Bis(diethylamino)phenyl)3-(2-chloro-4-(diethylamino)phenyl)phthalide