Chiral Brønsted Acid Catalyzed Enantioconvergent Synthesis of Chiral Tetrahydrocarbazoles with Allenylsilanes from Racemic Indolylmethanols
作者:Shigenobu Umemiya、Kong Lingqi、Yuno Eto、Masahiro Terada
DOI:10.1246/cl.210803
日期:2022.4.5
An efficient method for the synthesis of chiral tetrahydrocarbazoles (THCs) containing an allene moiety is disclosed, which was established by an enantioconvergent substitution reaction catalyzed by a chiral phosphoric acid. Racemic indolylmethanols bearing the THC motif reacted with N-methylpyrrole in the presence of the SPINOL-derived chiral phosphoric acid to give the corresponding chiral THCs with
公开了一种合成含有丙二烯部分的手性四氢咔唑 (THC) 的有效方法,该方法是通过手性磷酸催化的对映收敛取代反应建立的。在 SPINOL 衍生的手性磷酸存在下,带有 THC 基序的外消旋吲哚甲醇与N-甲基吡咯反应,以良好的收率和高对映选择性得到相应的手性 THCs。