Reaction of nitrones with trimethylsilyiketene

Article abstract of DOI:10.1016/S0040-4039(99)00407-4

Trimethylsilylketene smoothly reacts with α,N-diarylnitrones to give oxindoles in good yields. On the other hand, the reaction of trimethylsilylketene with N-arylmethylnitrones gives a mixture of N,N- diacylamines and N-acylamines.