Nitropyridines reacted with an excess of vinyl Grignard reagent to produce 4- or 6-azaindoles. Improved yields were obtained when a halogen atom was present at the position alpha to the nitrogen atom in the pyridine ring.
硝基吡啶与过量的
乙烯基格氏试剂反应生成4-或
6-氮杂吲哚。当在
吡啶环中氮原子的α位上存在卤素原子时,获得了提高的产率。