A New Route for the Convenient Synthesis of 5-Acylamino-3,6-diarylperhydro-2- thioxo-1,3-thiazin-4-ones

Michael-type addition of N-aryldithiocarbamic acids 2a-c to 4-arylidene-5-oxazolones 1a-c followed by ring transformation of the resulting Michael adducts 3a-i yielded new 5-acylamino-3,6-diarylperhydro-2-thioxo-1,3-thiazin-4-ones 4a-i in one pot.