Palladium-catalyzed direct oxidative Heck–Cassar–Sonogashira type alkynylation of indoles with alkynes under oxygen
作者:Luo Yang、Liang Zhao、Chao-Jun Li
DOI:10.1039/c0cc00014k
日期:——
A novel Pd(II) catalyzed direct oxidative Heck-Cassar-Sonogashira type alkynylation of indoles with terminal alkynes under an atmosphere of O(2) is developed. Unlike previous methods, the reaction does not require the pregeneration of indolyl halide or alkynyl halide. Furthermore, only a catalytic amount of base is required and oxygen was used as the ultimate "green" terminal oxidant.