Enantioselective synthesis of aziridines from imines and alkyl halides using a camphor-derived chiral sulfide mediator via the imino Corey–Chaykovsky reaction
作者:Takao Saito、Masao Sakairi、Daisuke Akiba
DOI:10.1016/s0040-4039(01)01016-4
日期:2001.8
Asymmetric one-pot aziridination of imines with alkyl bromides via the imino Corey-Chaykovsky reaction mediated by chiral sulfide is described. The desired aziridines are obtained in good yields with up to 98% ee of the trans isomer. (C) 2001 Elsevier Science Ltd. All rights reserved.
Synthesis of Chiral Organocatalysts derived from Aziridines: Application in Asymmetric Aldol Reaction
作者:Shikha Gandhi、Vinod K. Singh
DOI:10.1021/jo8019863
日期:2008.12.5
We report the synthesis of a new series of highly efficient chiral organocatalysts derived via the regio- and stereoselective ring opening of chiral aziridines with azide anions. The catalysts have proved to be very efficient for a direct asymmetric aldolreaction, both with cyclic as well as acyclic ketones in brine with 2 mol % of catalyst loading, and afforded the products in excellent yields (up