Asymmetric Synthesis of Terminal <i>N</i>-<i>tert</i>-Butylsulfinyl Aziridines from Organoceriums and an α-Chloroimine
作者:David M. Hodgson、Johannes Kloesges、Brian Evans
DOI:10.1021/ol800961a
日期:2008.7.3
Addition of N-(2-chloroethylidene)-tert-butylsulfinamide to organocerium reagents in DMPU/THF (1:10) at -78 degrees C followed by warming to 25 degrees C provides terminal N-tert-butylsulfinyl aziridines in good yields (63-92%, nine examples) and diastereomeric ratios (85:15->99:1).
Terminal Aziridines by Addition of Grignard Reagents or Organoceriums to an (α-Chloro)sulfinylimine
作者:David Hodgson、Johannes Kloesges、Brian Evans
DOI:10.1055/s-0029-1216799
日期:2009.6
e with Grignard reagents or organoceriums gives terminal N-tert-butylsulfinyl aziridines in good yields and (mainly with organoceriums) good diastereomeric ratios. Oxidation of terminal N-tert-butylsulfinyl aziridines provides synthetically useful terminal N-Bus (Bus = tert-butylsulfonyl) aziridines. aziridines - chiral auxiliaries - imines - nucleophilic addition - organoceriums