Sulfonic acid esters

Abstract From the Canadian patent

The invention relates to novel sulfonic acid esters of formula I ( I ), wherein R1 is C5-C6 cycloalkyl which is unsubstituted or substituted by C1-C7 alkyl, or is phenyl that may be substituted by one or more substituents selected from the group consisting of C1-C7 alkyl hydroxy, C1-C7 alkoxy, C1-C7 alkanoyloxy fluorine, C1-C7 alkylenedioxy, amino, C1-C7 alkylamino di(C1-C7) alkylamino, C1-C7 alkanoylamino carbamoyl, C1-C7 alkylcarbamoyl, di(C1-C7)alkylcarbamoyl C1-C7 alkanesulfonylamino, sulfamoyl, C1-C7 alkylsulfamoyl di(C1-C7)alkylsulfamoyl, C1-C7 haloalkyl C1-C7 hydroxyalkyl and C1-C7 aminoalkyl R2 is C1-C7 alkyl, R3 is phenyl, which is substituted by halogen or nitro and the asterisk …