Enantioselective Synthesis of C2-Quaternary Indolin-3-ones by Pt-Catalyzed Alkynylation of 2-Aryl-3<i>H</i>-indol-3-one with Alkynylsilanes
作者:Fan Yang、Shaojian Luo、Meifen Wang、Baomin Fan、Bo Yao
DOI:10.1021/acs.joc.3c02807
日期:2024.3.1
method for the synthesis of five-membered chiral propargylic amines from 2-aryl-3H-indol-3-one and alkynylsilanes has been developed. The reaction proceeded under the catalytic system of PtCl4, oxazoline-based ligand L11, Zn(CF3COO)2, and AcOH in DCE at 95 °C via in situ desilylation of TMS-alkynes. This methodology also highlights a new protocol for the in situ desilylation of alkynylsilanes. The reaction