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Abstract

The invention relates to a process for preparing arylsulphonyl isocyanates of the general formula (I) ##STR1## and addition derivatives thereof--where in the formula the meaning of the substituents are as follows: Ar represents optionally substituted aryl, naphthyl- or thienyl group, and HX is a chemical bond or X ZR.sub.1 stands for a group where Z is oxygen or sulphur, R.sub.1 is saturated or unsaturated alkyl, benzyl, cyclohexyl or substituted phenyl group or X is an NR.sub.2 R.sub.3 group wherein R.sub.2 R.sub.3 is hydrogen, alkyl, unsubstituted alkyl, aryl, substituted aryl, aroyl or acyl group, and the essence of the process is that an N-halogen sulphonamidate is carbonylated in the presence of a carbonylating catalyst, in the presence or absence of alcohol, (thio) alcohol or amine reactants and the carbonylated compound obtained is reacted subsequently with the reactants.

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First Claim