Aliphatic or aromatic N, N-disubstituted nitrosamine was generated in fair to excellent yield from the reaction of a secondary or tertiary amine with o-iodoxybenzoic acid (IBX) or o- iodosylbenzoic acid (IBA)/R4NX (X= halide) and nitromethane. The product yield was strongly influenced by both the halide of R4NX and iodanes. IBX gave a higher yield than IBA, while the halides follow F–> Cl–> Br–∼ I–. Nitrous acid formed in situ from ...