A Facile Two-Step Synthesis of 2-Arylbenzofurans Based on the Selective Cross McMurry Couplings
作者:Xin-Fang Duan、Jing Zeng、Zhan-Bin Zhang、Guo-Fu Zi
DOI:10.1021/jo7019652
日期:2007.12.1
[GRAPHICS]A novel two-step synthesis of 2-arylbenzofurans has been developed. It involves a selective cross McMurry coupling of a salicylaldehyde or substituted salicylaldehyde with an aromatic aldehyde and a sequential oxidative cyclization of the resulting ortho-vinylphenols. Utilizing this synthetic protocol, a variety of 2-arylbenzofurans including cicerfuran (5) have been efficiently synthesized.