A pyridinesulfonamide derivative of the formula (I) and a salt thereof: ##STR1## wherein R.sup.1 is a halogen atom, a trifluoromethyl group, a C.sub.1 -C.sub.6 alkoxycarbonyl group, a C.sub.1 -C.sub.6 mono- or di-alkylaminocarbonyl group, a C.sub.1 -C.sub.6 alkoxy group, a C.sub.1 -C.sub.6 alkylsulfonyl group, a C.sub.1 -C.sub.6 alkylthio group, a C.sub.1 -C.sub.6 alkyl group substituted by a C.sub.1 -C.sub.6 alkoxy group, a C.sub.1 -C.sub.6 alkyl group substituted by a C.sub.1 -C.sub.6 mono- or poly-halogenoalkoxy group, a C.sub.1 -C.sub.6 mono- or poly-halogenoalkoxy group, a C.sub.1 -C.sub.6 mono- or di-alkylaminosulfonyl group, a C.sub.1 -C.sub.6 alkoxyaminosulfonyl group substituted by a C.sub.1 -C.sub.6 alkyl group, a nitro group, a C.sub.1 -C.sub.6 alkyl group substituted by a C.sub.1 -C.sub.6 alkylthio group, a C.sub.1 -C.sub.6 alkyl group substituted by a C.sub.1 -C.sub.6 alkylsulfonyl group, or a C.sub.1 -C.sub.6 alkyl group substituted by a C.sub.1 -C.sub.6 alkoxycarbonyl group; R.sup.2 is a hydrogen atom or a halogen atom; X is a oxygen atom or a sulfur atom; and G is ##STR2## which are useful as herbicides.
化合物及其盐的式(I)的
吡啶磺酰胺衍
生物:##STR1##
其中,R.sup.1是卤素原子、三
氟甲基基团、C.sub.1-C.sub.6烷氧羰基基团、C.sub.1-C.sub.6单烷基或双烷基
氨基羰基基团、C.sub.1-C.sub.6烷氧基、C.sub.1-C.sub.6烷基磺酰基、C.sub.1-C.sub.6烷基
硫基、C.sub.1-C.sub.6烷基被C.sub.1-C.sub.6烷氧基取代、C.sub.1-C.sub.6烷基被C.sub.1-C.sub.6单烷基或多卤代烷氧基取代、C.sub.1-C.sub.6单烷基或多卤代烷氧基、C.sub.1-C.sub.6单烷基或双烷基
氨基磺酰基、被C.sub.1-C.sub.6烷基取代的C.sub.1-C.sub.6烷氧基
氨基磺酰基、硝基、C.sub.1-C.sub.6烷基被C.sub.1-C.sub.6烷基
硫基取代、C.sub.1-C.sub.6烷基被C.sub.1-C.sub.6烷基磺酰基取代或C.sub.1-C.sub.6烷基被C.sub.1-C.sub.6烷氧羰基取代;R.sup.2是氢原子或卤素原子;X是氧原子或
硫原子;G是##STR2## 这些化合物是
除草剂。