REACTIONS OF 2,4,6-TRIARYL-DIHYDRO-1,3,5-DITHIAZINES WITH ELECTROPHILIC REAGENTS

Article abstract of DOI:10.1246/cl.1983.1503

2,4,6-Triaryl-dihydro-1,3,5-dithiazines reacted with electrophilic reagents such as p-TsOH*H2O, CF3COOH, HCl, and BF3*OEt2 under reflux in CH3CN to afford α-2,4,6-triaryl-1,3,5-trithianes and β-isomers (3a-d) in good yields.Reaction with I2 gave selectively 3a-d in high yields, while with ICl or IBr gave 3a-d and p-substituted benzylideneamine*HY.