A novel approach to the synthesis of 11,11-dimethyl-bisbenzopyran-5-ones
作者:Nareshkumar Jain、Jiayi Xu、Ningyi Chen、Zhihua Sui
DOI:10.1016/j.tetlet.2005.10.150
日期:2006.1
A facile route for the synthesis of 11,11-dimethyl-bisbenzopyran-5-ones ring system is described. The key step, the late stage oxidation of the allylic methylene group was achieved by benzyl(triethyl)ammonium permanganate in CH2Cl2.