Dearomatization Reactions of Aryl-Substituted Silaaziridines

Silaaziridines with an aryl group on either the carbon or the nitrogen atom undergo dearomatization reactions upon treatment with benzaldehyde. The reactions form new bonds ortho to the nitrogen substituents with high diastereoselectivity. These dearomatization processes likely are driven by relief of the considerable ring strain of the silaaziridine.