Direct N-acylation of lactams, oxazolidinones, and imidazolidinones with aldehydes by Shvo's catalyst.

Direct N-acylation of lactams, oxazolidinones, and imidazolidinones was achieved with aldehydes by Shvo’s catalyst without using any other stoichiometric reagent. The N-acylations with α,β-unsaturated aldehydes were achieved with excellent yields.