打破禁忌:在手性金配合物的存在下,首次首次描述了在催化和对映选择性的Friedel-Crafts烷基化反应中直接使用烯丙醇。该分子内Friedel-Crafts反应用于制备范围广泛的官能化四氢咔唑(参见方案; X = Me,F,Br,Cl,OMe; R = Me,Et,t Bu; R'= H,Me)。
Chiral Brønsted Acid-Catalyzed Intramolecular Asymmetric Allylic Alkylation of Indoles with Primary Alcohols
作者:Lei-Ming Zou、Xian-Yun Huang、Chao Zheng、Yuan-Zheng Cheng、Shu-Li You
DOI:10.1021/acs.orglett.2c01253
日期:2022.5.20
Herein, chiral Brønsted acid-catalyzed intramolecularasymmetricallylicalkylation of indoles with allylic primary alcohols is described. The allyl alcohols were directly employed as the allylic precursors in this metal-free protocol, without preactivation or any additional activating reagents. This method provides the convenient synthesis of a broad range of functionalized tetrahydrocarbazoles in