| Abstract: | Consecutive Products of Sulphonamides. VI. Synthesis and Cyclization of N-Allyl-N′-arylsulphonyl-thioureas N-Allyl-N′-arylsulphonyl-thioureas 3a–e are synthesized by addition reaction of substituted arensulphonamides 2a–e and allylisothiocyanate 1 . The thioureas 3a–e react with hydrogen bromide in acetic acid or bromine in chloroform to 2-(arylsulphonylimino)-5-methyl-(or bromomethyl)thiazolidines 8a-j . The mechanism of reaction and the structures are discussed by means of i.r., m.s. and 1H-n.m.r. data. |
