A novel photochemical Wittig reaction for the synthesis of 2-aryl/alkylbenzofurans
作者:Somnath Ghosh、Jhantu Das
DOI:10.1016/j.tetlet.2010.12.104
日期:2011.3
The synthesis of 2-aryl/alkylbenzofurans has been achieved in high yields under photochemical conditions from readily accessible and suitably substituted phosphonium bromides by an intramolecular photochemical Wittigreaction onto aryloxycarbonyl groups.
Unexpected one-step synthesis of 3-benzoyl-2-phenylbenzofurans under Wittig conditions
作者:Michela Begala、Pierluigi Caboni、Maria João Matos、Giovanna Lucia Delogu
DOI:10.1016/j.tetlet.2018.03.048
日期:2018.5
conditions, led to 2-phenylbenzofuran derivatives 4a–p and the unexpectedformation of 3-benzoyl-2-phenylbenzofuran derivatives 5a–p. Benzoyl chlorides possessing electron-withdrawing groups afforded 3-benzoyl-2-phenylbenzofuran derivatives in higher yields than those with electron-donating groups. This reaction represents a simple and regioselective, one-pot route towards the preparation of deactivated