Sulfonamide reagieren mit Schwefelkohlenstoff und Alkali zu Salzen von N-Sulfonyl-iminodithiokohlensauren (1). Deren Alkylierung liefert N-Sulfonyl-dithiourethane 2 oder N-Sulfonyl-iminodithiokohlensaureester 3, die Ausgangsprodukte fur weitere Synthesen sind. Erstmals hergestellt wurden daraus u. a. N-Sulfonyl-senfole 9, N-Sulfonyl-thiocarbamidsaureester 10, 4-Sulfonyl-thiosemicarbazide 13 und S-Alkyl-4-sulfonyl-isothiosemicarbazide 22.
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