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
Synthesis of Optically Active Arylaziridines by Regio- and Stereospecific Lithiation of <i>N</i>-Bus-Phenylaziridine
作者:Biagia Musio、Guy J. Clarkson、Michael Shipman、Saverio Florio、Renzo Luisi
DOI:10.1021/ol802487v
日期:2009.1.15
α,α-Disubstituted aziridines can be produced in good yields by selective lithiation of N-tert-butylsulfonyl-2-phenylaziridine (n-BuLi/TMEDA, Et2O) at the benzylic position and subsequent trapping with a range of electrophiles. Repetition of the lithiation/electrophilic trapping sequence provides a stereocontrolled route to trisubstituted aziridines. Using (R)-N-tert-butylsulfonyl-2-phenylaziridine