Herbicidal sulfonamides

A compound selected from ##STR158## wherein R is ##STR159## R.sub.2 is C.sub.2 -C.sub.5 alkenyl, C.sub.5 -C.sub.6 cycloalkenyl or C.sub.2 -C.sub.3 alkenyl substituted with 1-3 chlorine atoms;

• n is 0 or 1;
• R.sub.1 is H, F, Cl, Br, NO.sub.2, CF.sub.3, C.sub.1 -C.sub.4 alkyl, OCF.sub.3 or C.sub.1 -C.sub.3 alkoxy;
• R.sub.5 and R.sub.6 are independently H or CH.sub.3 ;
• A is ##STR160## X is H, CH.sub.3, OCH.sub.3, OCH.sub.2 CH.sub.3, OCH.sub.2 CF.sub.3, CH.sub.2 OCH.sub.3 or Cl;
• Y is CH.sub.3, OCH.sub.3, OCH.sub.2 CH.sub.3, NH.sub.2, NHCH.sub.3 or N(CH.sub.3).sub.2 ;
• Z is N
• provided that when Z is N and X is Cl, then Y is CH.sub.3.