Intermediate isocyanato benzenesulfonamide compounds

Compounds having the formula: wherein X is C1-C4 alkyl, C1-C8 alkoxy or halogen; Y is hydrogen, halogen, or C1-C4 dialkylamino; R1 is C1-C8 straight chain or branched alkyl, C3-C8 cycloalkyl, C3-C8 alkenyl or C3-C8 alkoxy; R2 is C1-C8 straight chain or branched alkyl, C3-C8 alkenyl, C3-C8 cycloalkyl, halo substituted C3-C8 alkenyl, C3-C8 alkynyl, C1-C4 alkoxy, cyano C1-C4 alkyl, alkoxyalkyl, phenyl, aralkyl, C1-C4 acyl, C1-C4 carbalkoxyalkyl, C1-C4 carbalkoxyalkyl substituted by C1-C4 alkyl, phenylmethyl or methylthioethyl, dialkylaminoethyl, or tetrahydrofuranylmethyl; R1 and R2 taken together form a C3-C8 membered heterocyclic ring containing one or more heteroatoms. The compounds are useful as intermediates for making herbicides. Compounds having the formula: wherein X is C1-C4 alkyl, C1-C8 alkoxy or halogen; Y is hydrogen, halogen, or C1-C4 dialkylamino; R1 is C1-C8 straight chain or branched alkyl, C3-C8 cycloalkyl, C3-C8 alkenyl or C3-C8 alkoxy; R2 is C1-C8 straight chain or branched alkyl, C3-C8 alkenyl, C3-C8 cycloalkyl, halo substituted C3-C8 alkenyl, C3-C8 alkynyl, C1-C4 alkoxy, cyano C1-C4 alkyl, alkoxyalkyl, phenyl, aralkyl, C1-C4 acyl, C1-C4 carbalkoxyalkyl, C1-C4 carbalkoxyalkyl substituted by C1-C4 alkyl, phenylmethyl or methylthioethyl, dialkylaminoethyl, or tetrahydrofuranylmethyl; R1 and R2 taken together form a C3-C8 membered heterocyclic ring containing one or more heteroatoms. The compounds are useful as intermediates for making herbicides.