Patent number: 5461025
Abstract: The present invention relates to novel benzenesulfonylurea derivatives, having a herbicidal activity, which is described in the following structure of general formula (I) ##STR1## wherein R.sup.1 is H,C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 haloalkyl, halogen, CN, NO.sub.2, C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 haloalkoxy, 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, SCH.sub.2 F, NH.sub.2, NHCH.sub.3, N(Me).sub.2, C.sub.1 -C.sub.2 alkyl substituted with C.sub.1 -C.sub.2 alkoxy, C.sub.1 -C.sub.2 haloalkoxy, SH, SCH.sub.3, CN or OH, or CO.sub.2 R.sup.III ; and then R.sup.1 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, C.sub.3 -C.sub.4 alkenyl, or when taken together connecting R.sup.I and R.sup.II, --(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 -- , may be formed;R.sup.III is C.sub.1 -C.sub.
Type:
Grant
Filed:
December 9, 1993
Date of Patent:
October 24, 1995
Assignee:
Korea Research Institute of Chemical Technology
Inventors:
Dae-Whang Kim, Young Kwan Ko, Jin-Seog Kim, Dong Whan Ku