Metal Free, Microwave Assisted Preparation of N-Sulfonyl and N-Sulfinyl lmines and Imidates

A general method for the preparation of N-sulfonyl and N-sulfinyl imines and imidates under microwave irradiation is described. The conditions developed avoid the use of strong Lewis or Bronsted acids, limit the use of polluting solvents and of an excess of a dehydrating agent, affording the imines and imidates in high yields within short reaction time.