2-[(1,2-Dimethyl-3-indolyl)carbonyl]-3,4,5,6-tetrachlorobenzoic acid 、
N,N,N',N'-四甲基苯-1,3-二胺 、
乙酸酐 、
ammonium hydroxide 在
醋酸异丙酯 、
3-(2,4-bis-dimethylamino-phenyl)-4,5,6,7-tetrachloro-3-(1,2-dimethyl-indol-3-yl)-3H-isobenzofuran-1-one 作用下,
以
盐酸 为溶剂,
反应 1.0h,
以to obtain 3-[2,4-bis(dimethylamino)phenyl]-3-(1,2-dimethyl-3-indolyl)-4,5,6,7-tetrachlorophthalide (Formula III: Ro =R1 =R2 =R3 =Cl; R=R5 =R6 =CH3 ; R4 =N(CH3)2 ; Y1 =H) which的产率得到3-(2,4-bis-dimethylamino-phenyl)-4,5,6,7-tetrachloro-3-(1,2-dimethyl-indol-3-yl)-3
H-isobenzofuran-1-one