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
Copper-Catalyzed Tethered Aziridination of Unsaturated <i>N-</i>Tosyloxy Carbamates
作者:Renmao Liu、Steven R. Herron、Steven A. Fleming
DOI:10.1021/jo0705014
日期:2007.7.1
nitrene addition to alkenes. The carbamate group was used as the tether between the alkene and the nitrene. Subsequent nucleophilic attack of the aziridine was accomplished using RSH, R2NH, N3-, or ROH as the nucleophile. This addition was found to be regio- and stereoselective. This methodology has been used to demonstrate its utility in the regio- and stereoselectivesynthesis of a 1,2-diamino-3-hydroxycyclohexane