BENZENESULFONYLUREA DERIVATIVES

PCT No. PCT/KR92/00007 Sec. 371 Date Dec. 9, 1993 Sec. 102(e) Date Dec. 9, 1993 PCT Filed Mar. 9, 1992 PCT Pub. No. WO92/15568 PCT Pub. Date Sep. 17, 1992.The present invention relates to novel benzenesulfonylurea derivatives, having a herbicidal activity, which is described in the following structure of general formula (I) (I) wherein R1 is H,C1-C3 alkyl, C1-C3 haloalkyl, halogen, CN, NO2, C1-C3 alkoxy, C1-C3 haloalkoxy, SO2NRIRII, C1-C3alkylthio, C1-C3 alkylsulfinyl, C1-C3 alkylsulfonyl, SCH2F, NH2, NHCH3, N(Me)2, C1-C2 alkyl substituted with C1-C2 alkoxy, C1-C2 haloalkoxy, SH, SCH3, CN or OH, or CO2RIII; and then R1 is H, C1-C4 alkyl, C2-C3 cyanoalkyl, methoxy or ethoxy; RII is H, C1-C4 alkyl, C3-C4 alkenyl, or when taken together connecting RI and RII, -(CH2)3-, -(CH2)4-, -(CH2)5- or -CH2CH2OCH2CH2- , may be formed; RIII is C1-C4 alkyl, C3-C4 alkenyl, C3-C4 alkynyl, C1-C4 alkyl substituted with 1 DIFFERENCE 3 halogens or cyano grour)s, C5-C6, cycloalkyl, C3-C7 cycloalkylalkyl or C2-C4 alkoxyalkyl; R2 is C1-C6, alkyl substituted with 1 DIFFERENCE 3 halogens; R3 is H or CH3; W is O or S; A is a heterocyclic ring defined in the specification; and these may be an agriculturally suitable salt.