Herbicidal sulfonamides

A compound of the formula ##STR24## wherein L is ##STR25## R is H or CH.sub.3 ;

• W.sub.3 is O or S;
• n is 0 or 1;
• R.sub.1 is H, C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 haloalkyl, halogen, nitro, CH.sub.2 CN, CH.sub.2 OCH.sub.3, CH.sub.2 SCH.sub.3, CN, C.sub.1 -C.sub.3 alkoxy, SO.sub.2 NR.sup.I R.sup.II, C.sub.1 -C.sub.3 alkylthio, C.sub.1 -C.sub.3 alkylsulfinyl, C.sub.1 -C.sub.3 alkylsulfonyl or CO.sub.2 R.sup.III ;
• R.sup.I is H, C.sub.1 -C.sub.4 alkyl, C.sub.2 -C.sub.3 cyanoalkyl, methoxy or ethoxy;
• R.sup.II is H, C.sub.1 -C.sub.4 alkyl or C.sub.3 -C.sub.4 alkenyl;
• or
• R.sup.I and R.sup.II may be taken together as --(CH.sub.2).sub.3 --, --(CH.sub.2).sub.4 --, --(CH.sub.2).sub.5 -- or --CH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.2 --;
• R.sup.III is C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.4 alkenyl, C.sub.3 -C.sub.4 alkynyl, C.sub.2 -C.sub.4 haloalkyl, C.sub.2 -C.sub.4 cyanoalkyl, C.sub.5 -C.sub.6 cycloalkyl, C.sub.4 -C.sub.7 cycloalkylalkyl or C.sub.2 -C.sub.4 alkoxyalkyl;
• W is W.sub.1 ;
• W.sub.1 is C.sub.2 -C.sub.8 alkenyl substituted with 1-3 atoms of F, Cl or Br;
• A is ##STR26## X is H, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkoxy, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 haloalkylthio, C.sub.1 -C.sub.4 alkylthio, C.sub.2 -C.sub.5 alkoxyalkyl, C.sub.2 -C.sub.5 alkoxyalkoxy, amino, C.sub.1 -C.sub.3 alkylamino or di(C.sub.1 -C.sub.3 alkyl)amino;
• Y is H, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkoxy, C.sub.1 -C.sub.4 haloalkylthio, C.sub.1 -C.sub.4 alkylthio, C.sub.2 -C.sub.5 alkoxyalkyl, C.sub.2 -C.sub.5 alkoxyalkoxy, amino, C.sub.1 -C.sub.3 alkylamino, di(C.sub.1 -C.sub.3 alkyl)amino, C.sub.3 -C.sub.4 alkenyloxy, C.sub.3 -C.sub.4 alkynyloxy, C.sub.2 -C.sub.5 alkylthioalkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.3 -C.sub.5 cycloalkyl, C.sub.2 -C.sub.4 alknynyl, ##STR27## m is 2 or 3;
• L.sub.1 and L.sub.2 are independently O or S;
• R.sub.4 and R.sub.5 are independently C.sub.1 -C.sub.2 alkyl;
• R.sub.6 is H or CH.sub.3 ;
• and
• Z is N;
• and their agriculturally suitable salts;
• provided that
• (a) X or Y is other than OCF.sub.2 H;
• (b) when W.sub.3 is S, then R is H, and Y is CH.sub.3, OCH.sub.3, OC.sub.2 H.sub.5, CH.sub.2 OCH.sub.3, C.sub.2 H.sub.5, CF.sub.3, SCH.sub.3, OCH.sub.2 CH.dbd.CH.sub.2, OCH.sub.2 C.tbd.CH, OCH.sub.2 CH.sub.2 OCH.sub.3 or CH(OCH.sub.3).sub.2 ;
• and
• (c) when the total number of carbon atoms of X and Y is greater than four, then the number of carbons of R.sub.1 must be less than or equal to two and the number of carbons of W must be less than or equal to four.