Smooth Photocatalytic Preparation of 2‐Substituted 1,3‐Benzodioxoles
作者:Davide Ravelli、Angelo Albini、Maurizio Fagnoni
DOI:10.1002/chem.201002546
日期:2011.1.10
A mild and general method for the synthesis of potentially bioactive 2‐substituted‐1,3‐benzodioxoles is presented. This is based on the photocatalyzed activation of methylene hydrogen atoms in the presence of tetrabutylammonium decatungstate (TBADT). The method gave yields ranging from 46–77 % with no interference by benzene ring substituents, such as OR, COOMe, Me, or CHO. The OH group interfered