The preparation is described of some substituted 1,4-thiazane-l ,I-dioxides containing respectively propargyl, allyl, cyclohexyl, benzyl. octyl, dodecyl and cetyl groups in the 4-position. Also some quaternary compounds derived from the first four substances are described. ... It has been shown by Ford-Moore 1,2, that when divinylsulphone is treated with primary amines derivatives of 1,4-thiazane-l,l-dioxide result: ... /cc ) N--R CGCH z H, $- ,NR --i OZS / 0 2 s 'C=CHz H ...