Herbicides of substituted Pyridine Compounds, herbicidal composition, method for Combating unwanted plants and Method for selectively Combat unwanted plants of Corn or Rice.

摘要

New substituted Pyridine compounds of formula I: wherein a represents a group of 5 or 6 members heteroaromu00e1tico optionally replaced,It has an Aromatic Ring containing 1 - 3 Atoms of Nitrogen, a onaftil or optionally substituted phenyl Group, or a Group difluorobenzodioxolilo,These optional substituents being selected from the group consisting of halogen, Nitro, cyano, amino, hydroxyl, c1-4 alkyl, c1-4 alkoxy, 4haloalquilo C1, C1 4haloalquiltio,Haloalcoxi C1 - C2 - 4, 4 and 5 haloalquenilo, taking up halosulfanilo Halogen Atoms; b represents a hidrocarburocu00edclico choose an alkyl group, substituted or alquenilo alquinilo,A group of 6 members heteroaromu00e1tico 5th option has unanillo alemente substituted Aromatic containing 1 - 3 nitrogen atoms from phenyl or naphthyl Group, an optionally substituted,Or a Group difluorobenzodioxolilo, ES1 or without N or 2, a group tienilo opcionalmentesustituido stituyebtes optional, these being selected from the group consisting of halogen, Nitro, cyano,Amino, hydroxyl, c1-4 alkyl, c1-4 alkoxy, c1-4 haloalquilo, c1-4 haloalquiltio, c1-4 haloalcoxi,C2 - 4 to 5 haloalquenilo yhalosulfanilo taking Halogen Atoms; n represents an integer from 0 to 2; R represents a hydrogen Atom, a Halogen Atom, an alkyl group, alquenilo,Alquinilo, alkoxy, amino Alquiltio dialcoxialquilo alkoxyalkyl esters,,,, alquilamino, dialqu ilamino alcoxiamino, or optionally substituted or grupohidroxi, formamidino,Or cyano; x1 and x2 independently represent an oxygen or Sulphur Atom; and agronomamente acceptable salts of the same utilescomoherbicida,Method for Camber TIR unwanted plants of Corn or Rice.