Catalyst-Controlled Diastereoselective Synthesis of Cyclic Amines via C-H Functionalization
作者:Sailu Munnuri、Adeniyi Michael Adebesin、Mahesh P Paudyal、Muhammed Yousufuddin、Alfonso Dalipe、John R. Falck
DOI:10.1021/jacs.7b09901
日期:——
restrictions, especially in complex molecule synthesis. This report describes a catalyst-controlled regio- and diastereoselective synthesis of N-unprotected pyrrolidines via dirhodium catalyzed intramolecular nitrene insertion into sp3 C-H bonds. The reaction proceeds at rt without external oxidants, nitrene stabilizing groups, or directing functionality. The insights that emerged from the conforma
由于区分多个相对强的 sp3 CH 键的挑战,这些键的化学行为通常只有细微的差别,因此适用于非活化脂肪族系统的可靠区域和立体化学技术在很大程度上仍然难以捉摸。然而,使用导向基团和/或助剂的方法已经出现,但施加了实际限制,特别是在复杂分子合成中。本报告描述了一种催化剂控制的区域选择性和非对映选择性合成 N-未保护的吡咯烷,通过 dirhodium 催化分子内氮烯插入 sp3 CH 键。反应在室温下进行,无需外部氧化剂、氮烯稳定基团或导向官能团。