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
Asymmetric aziridination by reaction of chiral N-sulfinylimines with sulfur ylides: Stereoselectivity improvement by use of tert-butylsulfinyl group as chiral auxiliary
作者:JoséL García Ruano、Inmaculada Fernández、Miriam del Prado Catalina、Ana Alcudia Cruz
DOI:10.1016/s0957-4166(96)00448-x
日期:1996.12
Chiraltert-butylsulfinylgroup has been shown to be the chiralauxiliary of choice for the asymmetric aziridination of N-sulfinyliminas. Moreover, the sense of the asymmetric induction can be tuned in two ways: the chirality at the tert-butylsulfinyl Sulfur, or the nature of the methylene transfer reagent used. Thus, both aziridines 10(Ss,S) and 10(Rs,R), epimeric at C-2, were obtained in enantiomerically
Corey-Chaykovsky Reaction of Chiral Sulfinyl Imines: A Convenient Procedure for the Formation of Chiral Aziridines
作者:Robert A. Stockman、Daniel Morton、David Pearson、Robert A. Field
DOI:10.1055/s-2003-42028
日期:——
The reaction of dimethylsulfonium methylide with a range of aromatic, heterocyclic and aliphatic tert-butylsulfinyl imines is presented. Aziridines were formed in 63-84% yield and 77-95% diastereomeric excess.
Diastereoselective synthesis of 2-methoxyimidoyloxiranes via dimethyl phosphite-mediated coupling of α-keto N-sulfinyl imidates with aldehydes
作者:Wei Huang、Hui Liu、Chong-Dao Lu、Yan-Jun Xu
DOI:10.1039/c6cc07723d
日期:——
Dimethyl phosphate-initiated coupling of [small alpha]-keto N-tert-butylsulfinyl imidates with aldehydes is reported. The epoxide formation involves a cascade transformation initiated by base-promoted addition of phosphite to [small alpha]-ketoimidates, followed by [1,2]-phospha-Brook rearrangement....