Diastereoselective Radical Aminoacylation of Olefins through N-Heterocyclic Carbene Catalysis
作者:Wen-Deng Liu、Woojin Lee、Hanyu Shu、Chuyu Xiao、Huiwei Xu、Xiangyang Chen、Kendall N. Houk、Jiannan Zhao
DOI:10.1021/jacs.2c11209
日期:2022.12.14
There have been significant advancements in radical-mediated reactions through covalent-based organocatalysis. Here, we present the generation of iminyl and amidyl radicals via N-heterocyclic carbene (NHC) catalysis, enabling diastereoselective aminoacylation of trisubstituted alkenes. Different from photoredox catalysis, single electron transfer from the deprotonated Breslow intermediate to O-aryl
An efficient and practical hypervalent iodine compound mediated metal-free intramolecular aziridination reaction of allylic carbamates was developed. Analytically pure aziridines were obtained in high yields by simple filtration of the reaction mixture. In situ ringopening of the aziridines provides an easy access to useful vicinal amino alcohol derivatives and diamine compounds. Up to 16% ee was