Treatment of 1-hydroxy-2-phenylindole (1) with phosphoryl chloride-DMF gave 2-phenylindole-3-carboxaldehyde (2) in 70% yield. The reaction of 1 with quinoline 1-oxide (3) and benzoyl chloride in boiling chloroform produced 1-benzoyloxy-2-phenyl-3-(2-quinolyl) indole (5) and 1-hydroxy-2-phenyl-3-(2-quinolyl) indole (6). In the reaction using tosyl chloride instead of benzoyl chloride, 6 or 2-phenyl-3-(2-quinolyl) indole (8) was formed. These results demonstrate that the enehydroxylamine systems in 1 and 1-benzoyloxy-2-phenylindole (4) can behave as nucleophilic species as a result of enamine-like polarization.
                                    用
磷酰
氯-
DMF 处理 1-羟基-
2-苯基吲哚(1),得到 
2-苯基吲哚-3-甲醛(2),产率为 70%。1 与
喹啉 1-氧化物(3)和
苯甲酰氯在沸腾的
氯仿中反应,生成 1-苯甲酰氧基-2-苯基-3-(2-
喹啉基)
吲哚(5)和 1-羟基-2-苯基-3-(2-
喹啉基)
吲哚(6)。在使用
甲苯酰
氯代替
苯甲酰氯的反应中,生成了 6 或 2-苯基-3-(2-
喹啉基)
吲哚(8)。这些结果表明,1 和 1-苯甲酰氧基-
2-苯基吲哚(4)中的烯
羟胺系统可作为亲核物种,这是烯
胺类极化的结果。