Rhodium-Catalyzed Atroposelective C–H/C–H Cross-Coupling Reaction between 1-Aryl Isoquinoline Derivatives and Indolizines
作者:Wen-Wen Zhang、Chen-Xu Liu、Pusu Yang、Su-Zhen Zhang、Qing Gu、Shu-Li You
DOI:10.1021/acs.orglett.1c04002
日期:2022.1.21
asymmetric oxidative C–H/C–H cross-coupling reaction between 1-aryl isoquinolines and indolizines is disclosed. With a matched pair of SCpRh complex and chiral carboxylic acid, enantioselective two-fold C–H/C–H cross-coupling reactions between 1-aryl isoquinolines and indolizines provide a variety of axially chiral bi(hetero)aryls in excellent yields and enantioselectivity (up to 96% yield and 98% ee). Mechanistic
Synthesis of Pyrrolo[2,1,5-<i>cd</i>]indolizines through Dehydrogenative Heck Annelation of Indolizines with Diaryl Acetylenes Using Dioxygen as an Oxidant
作者:Huayou Hu、Guodong Li、Weiming Hu、Yun Liu、Xiang Wang、Yuhe Kan、Min Ji
DOI:10.1021/ol503681n
日期:2015.3.6
A dehydrogenative Heck annelation reaction of indolizine with diaryl acetylene via dual C-H bond cleavage was developed. Oxygen gas was employed as a clean oxidant in this catalysis under base-free conditions. Diarylpyrrolo[2,1,5-cd]indolizines were synthesized with high atom economy. In addition, kinetic isotope experiments provided evidence for C-H bond metalation of the 5-position of the indolizine as the rate-limiting step.