Highly Enantioselective Synthesis of Tetrahydro-β-Carbolines and Tetrahydro-γ-Carbolines Via Pd-Catalyzed Intramolecular Allylic Alkylation
摘要:
A novel Pd-catalyzed intramolecular allylic alkylation of indoles allows THBCs and THGCs to be effectively synthesized in high yields and excellent enantiomeric excesses (ee up to 97%).
Highly Enantioselective Synthesis of Tetrahydrocarbolines <i>via</i> Iridium-Catalyzed Intramolecular Friedel–Crafts Type Allylic Alkylation Reactions
作者:Qing-Long Xu、Chun-Xiang Zhuo、Li-Xin Dai、Shu-Li You
DOI:10.1021/ol4027717
日期:2013.12.6
A highly enantioselective synthesis of substituted tetrahydrocarbolines via Ir-catalyzed Friedel–Crafts type intramolecular asymmetric allylic alkylation of 2-indolyl allyl carbonates has been developed. This strategy features excellent chemoselectivity and enantioselectivity, mild reaction conditions, and an easily accessed chiral ligand.