Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Diastereoselective addition of dimethyloxosulfonium methylide to chiral nonracemic pure sulfinimines 1 affords N-sulfinyl aziridines 3 in 58–70% de which are readily separated. The N-sulfinyl auxiliary in 3 was removed, without ring-opening, by treatment with MeLi.