N1C(C)=CC=CC=1C.Cl[CH2:10][N:11]([CH:16]1[CH2:21][CH2:20][CH2:19][CH2:18][CH2:17]1)[S:12]([Cl:15])(=[O:14])=[O:13].C1CCCCC1.[CH3:28][OH:29]>>[CH3:28][O:29][CH2:10][N:11]([CH:16]1[CH2:21][CH2:20][CH2:19][CH2:18][CH2:17]1)[S:12]([Cl:15])(=[O:14])=[O:13]22 parts of 2,6-lutidine are added in the course of 15 minutes, at from -5° to +5° C., to a mixture of 50 parts of N-chloromethyl-N-cyclohexylsulfamic acid chloride in 110 parts of cyclohexane and 55 parts of methanol. The reaction mixture is stirred for 20 minutes at 25° C. and one hour at 45° C. After concentrating the solvent under reduced pressure and removing the hydrochloride which has precipitated, distillation gives 30 parts (60% of theory) of N-methoxymethyl-N-cyclohexylsulfamic acid chloride of boiling point 102°-106° C./0.01 mbar and nD25 =1.4857.
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