Thallium in organic synthesis. 68. A convenient synthesis of 2-phenylindoles from anilides
作者:Edward C. Taylor、Alan H. Katz、Hector Salgado-Zamora、Alexander McKillop
DOI:10.1016/s0040-4039(00)98272-8
日期:1985.1
Thallation of anilides with TTFA in a mixture of TFA and ether gives ortho-thallated derivatives, which yield 2-acetamido-tolanes upon reaction with copper(I) phenylacetylide in acetonitrile. Treatment of the latter compounds with palladium(II) chloride results in ring closure to give 1-acyl-2-phenylindoles, from which 2-phenyl-indoles are obtained by alkaline hydrolysis.
在T
FA和
乙醚的混合物中用
TTFA苯酐进行邻
苯二甲酰化,得到
邻苯二甲酸酯化的衍
生物,当与
乙炔化
铜(I)在
乙腈中反应时,生成2-乙酰
氨基-甲
苯磺酸。用
氯化钯(II)处理后一化合物导致闭环,得到1-酰基-
2-苯基吲哚,通过碱
水解从中获得
2-苯基吲哚。