2-(2-Haloalkenyl)-aryl halides, conveniently prepared in a single step from the corresponding o-halobenzaldehydes, are combined with amines under Pd catalysis to provide 1-substituted indoles. All combinations of Br and Cl leaving groups can be employed, and a range of substituents on the arene, alkene and amine, can all be tolerated. The use of 1,3-dichloro-substituted arenes allows a third amination
由一步法从相应的邻卤代
苯甲醛方便地制备的2-(2-卤代烯基)-芳基卤化物在Pd催化下与胺结合,得到1-取代的
吲哚。可以使用Br和Cl离去基团的所有组合,并且
芳烃,烯烃和胺上的一系列取代基都可以被接受。使用1,3-二
氯取代的
芳烃可以进行第三次胺化过程。这些三组分方法以良好的产率提供了相应的
4-氨基吲哚。