Verfahren zur Herstellung von N-alkylierten AEthionylamino- oder Vinylsulfonylamino-arylderivaten

Compounds of formulae and wherein A is an optionally substituted aromatic residue, R1 is alkyl or aralkyl, R2 is H or alkyl, X is H or an alkali or alkaline earth metal and n is an integer 1-4 are made by alkylating the precursors (R1=H) in an aqueous medium in presence of an acid-binding agent at 30-130 DEG C. Examples describe the preparation of compounds in which R1 is methyl, R2 is H and A is 3-nitrophenyl, phenyl, 2,4-dimethoxy-4- or -5-nitrophenyl, 2 - chloro - 5 - nitrophenyl, 4 - phenxoyphenyl, 2 - methyl - 4 - nitro - 5 - methoxyphenyl, 2-naphthyl, 4-benzoylphenyl, 2,5 - dimethyl - 4 - nitrophenyl and 3 - nitro - 4 - ethoxyphenyl; and those in which R2 is H and (a) R1 is ethyl, A is 4-nitro-2-methoxyphenyl, (b) R1 is benzyl, A is phenyl. Specifications 985,604, 999,556 and 1,009,014 are referred to.