Synthesis 2009(11): 1923-1932  
DOI: 10.1055/s-0029-1216799
FEATUREARTICLE
© Georg Thieme Verlag Stuttgart ˙ New York

Terminal Aziridines by Addition of Grignard Reagents or Organoceriums to an (α-Chloro)sulfinylimine

David M. Hodgson*a, Johannes Kloesgesa, Brian Evansb
a Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, UK
Fax: +44(1865)285002; e-Mail: david.hodgson@chem.ox.ac.uk;
b GlaxoSmithKline, Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, UK
Further Information

Publication History

Received 29 March 2009
Publication Date:
12 May 2009 (online)

Abstract

Reaction of N-(2-chloroethylidene)-tert-butylsulfin­amide 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.

25

CCDC 712180, available at http://www.ccdc.cam.ac.uk.

26

Crimmins and Shamszad observed reaction of mesitylMgBr with a tert-butylsulfinyl aldimine bearing a (more strongly coordinating) α-PMBO group proceeded with the sense of asymmetric induction expected for an α-coordinating group (ref. 23).

30

CCDC 683080, available at http://www.ccdc.cam.ac.uk.

36

The principal authors of refs. 32 and 35 have accepted that their published data for material obtained on deprotection is not consistent with that expected for the deprotected aziridines (personal communications with Profs. Stockman and Aggarwal).