Herbicidal Sulfonamides

A compound of the formula:

• ##STR121## wherein R.sub.1 is S(O).sub.n R.sub.5, NR.sub.6 R.sub.7, CO.sub.2 R.sub.8, SO.sub.2 NR.sub.9 R.sub.10, ##STR122## OSO.sub.2 R.sub.13, CH.sub.2 OR.sub.14 or Q;
• R.sub.2 is S(O).sub.m R.sub.5, NR.sub.6 R.sub.7, CO.sub.2 R.sub.8, SO.sub.2 NR.sub.9 R.sub.10, ##STR123## OSO.sub.2 R.sub.13, CH.sub.2 OR.sub.14 or Q;
• R.sub.3 is H, Cl, F, Br, CH.sub.3, OCH.sub.3 or CF.sub.3 ;
• R.sub.4 is H or CH.sub.3 ;
• R.sub.5 is C.sub.1 -C.sub.3 alkyl;
• R.sub.6 and R.sub.7 are independently CH.sub.3 or CH.sub.2 CH.sub.3 ;
• R.sub.8 is C.sub.1 -C.sub.3 alkyl, CH.sub.2 CH.dbd.CH.sub.2, CH.sub.2 CH.sub.2 Cl or CH.sub.2 CH.sub.2 OCH.sub.3 ;
• R.sub.9 is CH.sub.3 or OCH.sub.3 ;
• R.sub.10 is C.sub.1 -C.sub.3 alkyl;
• R.sub.11 is H, Cl, Br, F, CH.sub.3 or OCH.sub.3 ;
• R.sub.12 is H or CH.sub.3 ;
• R.sub.13 is C.sub.1 -C.sub.3 alkyl or CF.sub.3 ;
• R.sub.14 is C.sub.1 -C.sub.3 alkyl or CF.sub.2 H;
• n is 0, 1 or 2;
• m is 0 or 1;
• Q is ##STR124## W is O, S or NR.sub.18 ;
• W' is O or S;
• R.sub.15, R.sub.16, R.sub.17 and R.sub.18 are independently H or CH.sub.3 ;
• Q is also ##STR125## R.sub.19, R.sub.20, R.sub.22, R.sub.24 and R.sub.25 are independently H or CH.sub.3 ;
• R.sub.21 and R.sub.23 are independently H, CH.sub.3 or OCH.sub.3 ;
• Q is also ##STR126## R.sub.26, R.sub.27, R.sub.28, R.sub.29, R.sub.30 and R.sub.31 are independently H or CH.sub.3 ;
• A is ##STR127## Z is CH;
• X is CH.sub.3, OCH.sub.3, Cl, OCH.sub.2 CH.sub.3, OCF.sub.2 H or F;
• Y is H, NH.sub.2, NHCH.sub.3, N(CH.sub.3).sub.2, CH.sub.3, CH.sub.2 CH.sub.3, CF.sub.3, CH.sub.2 OCH.sub.3, CH.sub.2 OCH.sub.2 CH.sub.3, O(C.sub.1 -C.sub.3 alkyl), SCH.sub.3, O(C.sub.3 -C.sub.4 alkenyl), O(C.sub.3 -C.sub.4 alkynyl), OCH.sub.2 CF.sub.3, OCH.sub.2 CH.sub.2 F, OCH.sub.2 CH.sub.2 Cl, OCH.sub.2 CH.sub.2 Br or OCF.sub.2 H;
• and agriculturally suitable salts thereof;
• provided that
• (a) R.sub.1 and R.sub.2 are not simultaneously CO.sub.2 R.sub.8 ;
• (b) when either one of R.sub.1 or R.sub.2 is SO.sub.2 NR.sub.9 R.sub.10, then the other must not be S(O).sub.n R.sub.5, S(O).sub.m R.sub.5, CH.sub.2 OR.sub.14 or NR.sub.6 R.sub.7 ;
• (c) when R.sub.9 is OCH.sub.3, then R.sub.10 is CH.sub.3 ;
• (d) when either one of R.sub.1 or R.sub.2 is CO.sub.2 R.sub.8, then the other must not be S(O).sub.n R.sub.5, S(O).sub.m R.sub.5 or NR.sub.6 R.sub.7 ;
• (e) the total number of carbon atoms in R.sub.26 to R.sub.31 combined, is equal to or less than four;
• (f) when X is Cl or F, then Y is NH.sub.2, NHCH.sub.3, N(CH.sub.3).sub.2, OCH.sub.3 or OCH.sub.2 CH.sub.3 ;
• (g) when R.sub.1 is CO.sub.2 R.sub.8 then R.sub.2 is not OSO.sub.2 R.sub.13 ;
• and
• (h) when X or Y is OCF.sub.2 H, then R.sub.2 is Q.