Efficient Conjugate Addition of 1H-Indoles to Electron-Deficient Olefins Catalyzed by Silica-Supported Sodium Hydrogen Sulfate (NaHSO4 ⋅ SiO2)
作者:Biswanath Das、Nikhil Chowdhury、K. Damodar、K. Ravinder Reddy
DOI:10.1002/hlca.200790040
日期:2007.2
A simple, mild, rapid, and highly efficient method for the conjugate addition of 1H-indoles to electron-deficient olefins has been developed using NaHSO4 ⋅ SiO2 as heterogeneous catalyst. The conversion proceeds at room temperature, and the corresponding Michael adducts are formed in good-to-excellent yields.
使用NaHSO 4 ·SiO 2作为非均相催化剂,开发了一种简单,温和,快速和高效的方法,用于将1 H-吲哚共轭添加到缺电子烯烃中。转化在室温下进行,并以良好至优异的产率形成相应的迈克尔加合物。