Cooperative Rh(II)/Pd(0) Dual Catalysis: Synthesis of Highly Substituted 3(2<i>H</i>)-Furanones with a C2-Quaternary Center via a Cyclization/Allylic Alkylation Cascade of α-Diazo-δ-keto-esters
作者:Qian-Qian Zhou、Ming Cheng、Qing Liu、Bing-Qian Qu、Xiao-Yan Huang、Fang Yang、Kegong Ji、Zi-Sheng Chen
DOI:10.1021/acs.orglett.1c03469
日期:2021.12.3
cyclization/allylic alkylation cascade of stable α-diazo-δ-keto-esters has been developed. Highly substituted 3(2H)-furanones with a C2-quaternary center can be obtained efficiently under mild conditions via one-pot synthesis. Remarkably, this binary catalytic system shows high chemo-, regio-, and stereoselectivity and excellent tolerance to various functionalities.
已经开发了一种协同的 Rh(II)/Pd(0) 双催化策略,可促进稳定的 α-重氮-δ-酮酯的环化/烯丙基烷基化级联反应。通过一锅法合成,可以在温和条件下有效地获得具有 C2-季铵盐中心的高度取代的 3( 2H )-呋喃酮。值得注意的是,这种二元催化体系显示出高化学、区域和立体选择性以及对各种功能的出色耐受性。