Novel and Selective Palladium-Catalyzed Annulations of 2-Alkynylphenols To Form 2-Substituted 3-Halobenzo[<i>b</i>]furans
作者:Yun Liang、Shi Tang、Xu-Dong Zhang、Li-Qiu Mao、Ye-Xiang Xie、Jin-Heng Li
DOI:10.1021/ol060908f
日期:2006.7.1
[reaction: see text] A novel and selective palladium-catalyzed annulation of 2-alkynylphenols method for the synthesis of 2-substituted 3-halobenzo[b]furans is presented. In the presence of PdX(2), CuX(2), and HEt(3)NX, 2-substituted 3-halobenzo[b]furans were selectively obtained as the major products. The mechanism of the reaction was also discussed.