Stereocontrol of C–N Axial and Spiro-Central Chirality via Rh(II)-Catalyzed Enantioselective N–H Bond Insertion of Indolinone-Spiroacetal
作者:Qiao Ren、Ming Lang、Haitao Liu、Xiangyu Li、Daoshun Wu、Jiayun Wu、Meihua Yang、Jianhe Wei、Zhi Ren、Lei Wang
DOI:10.1021/acs.orglett.3c03163
日期:2023.10.27
simultaneously controlling the C–N axial and spiro-central chiralities is disclosed, resulting in the rapid assembly of enantiopure N-arylindolinone-spiroacetal derivatives in high yields with excellent enantioselectivities. This promising strategy features the chiral C–N axis, spiro-central chirality, functional group tolerance, and late-stage diversification. DFT calculations indicate that the N–H insertion
公开了一种铑催化的卡宾 N-H 插入方案,用于同时控制 C-N 轴向和螺中心手性,从而以高产率快速组装对映体纯 N-芳基吲哚酮-螺缩醛衍生物,并具有优异的对映选择性。这种有前景的策略具有手性 C-N 轴、螺环中心手性、官能团耐受性和后期多样化的特点。DFT 计算表明 N-H 插入是轴向手性决定步骤,而 1,5-H 移动步骤是由螺环区域特异性引起的。