Novel indole-ring formation by thermolysis of 2-(N-acylamino)-benzylphosphonium salts. Effective synthesis of 2-trifluoromethylindoles
作者:Kazuyuki Miyashita、Katsunori Kondoh、Katsutoshi Tsuchiya、Hideto Miyabe、Takeshi Imanishi
DOI:10.1039/p19960001261
日期:——
Thermolysis of 2-(N-acylamino)benzyl methyl ethers, in the presence of an acid catalyst and triphenylphosphine, or 2-(N-acylamino)benzylphosphonium salts is found to serve as a novel method for indole formation, in particular for the synthesis of 2-trifluoromethylindoles. The reaction of the benzyl methyl ethers is suggested to involve a phosphonium intermediate, which thermally decomposes to the indoles.
2-(N-酰氨基)苄基甲基醚在酸催化剂和三苯基膦存在下,或在2-(N-酰氨基)苄基膦盐的作用下的热分解被发现是一种新颖的吲哚形成方法,特别用于合成2-三氟甲基吲哚。苄基甲基醚的反应被认为涉及一个膦盐中间体,该中间体通过热分解生成吲哚。