Enantioselective Dehydrative γ-Arylation of α-Indolyl Propargylic Alcohols with Phenols: Access to Chiral Tetrasubstituted Allenes and Naphthopyrans
作者:Wen-Run Zhu、Qiong Su、Hong-Juan Diao、Er-Xuan Wang、Feng Wu、Yun-Long Zhao、Jiang Weng、Gui Lu
DOI:10.1021/acs.orglett.0c02386
日期:2020.9.4
Herein, we report an enantioselective dehydrative γ-arylation of α-indolyl propargylic alcohols with phenols via organocatalysis, which provides efficient access to chiral tetrasubstituted allenes and naphthopyrans in high yields with excellent regio- and enantioselectivities under mild conditions. This method features the use of cheaply available naphthols/phenols as the C–H aryl source and liberating
本文中,我们报告了通过有机催化,α-吲哚基炔丙基醇与苯酚的对映选择性脱水γ-芳基化反应,可在温和条件下以高收率高效获得手性四取代的烯丙基和萘并吡喃,具有良好的区域和对映选择性。该方法的特点是使用廉价的萘酚/酚作为CHH芳基来源,并释放水作为唯一的副产物。对照实验表明,优异的对映选择性和远程区域选择性源自与手性磷酸催化剂的双重氢键相互作用。