Abstract A novel procedure has been developed for selective synthesis of N-aryl-1, 3, 5- dithiazinanes, 1, 2, 6, 7-tetrahydro-3, 5, 1, 7-benzodithiadiazonine, and 6, 7-dihydro-1, 3, 5, 7-benzotrithiazonine by reactions of aniline derivatives with N-methyl-1, 3, 5-dithiazinane or 1, 3, 5-trithiane in the presence of transition and rare earth metal salts and complexes.
