Patent CA-2094368-A1 (CA)
Title: Picolinic acid derivative and herbicidal composition
Inventor: TAKABE FUMIAKI
IPC: C07D521/00
Filed: 1993-04-19
Abstract: ABSTRACT OF THE DISCLOSURE   A picolinic acid derivative of the formula:                                             (I) wherein each of R1 and R2 is an alkoxy group, X1 is a group of the formula   wherein R3 is a hydrogen atom, an alkyl group, a haloalkyl group, an alkoxyalkyl group, an alkenyl group, an alkynyl group, an alkylcarbonyl group, a benzyloxycarbonyl group or a phenylsulfonyl group, and R4 is a haloalkyl group, an alkoxyalkyl group, an alkoxyalkyloxyalkyl group, an alkoxycarbonylalkyl group, a benzyloxyalkyl group, an alkyloxyoxyalkyl group, a phenoxyalkyl group, a dialkylaminoalkyl group, a cyanoalkyl group, an alkoxy group, a cycloalkyl group, an alkenyl group (which may be substituted at one or more positions by a halogen atom or a cyano group), an alkynyl group, a phenylalkyl group (which may be substituted at one or more positions by a halogen atom, an alkyl group, an alkoxy group, a nitro group or a cyano group), a cycloalkylcarbonyl group, a haloalkylcarbonyl group, an alkoxyalkylcarbonyl group, a cyanoalkylcarbonyl group, a phenoxyalkylcarbonyl group, a phenylalkylcarbonyl group, a halophenylalkylcarbonyl group, a benzoyl group (which is substituted by an alkyl group, a haloalkyl group, a halogen atom, an alkoxy group, a cyano group or a nitro group), a furancarbonyl group, a pyridylcarbonyl group, a pyrrolecarbonyl group, a thiophenecarbonyl group, an alkenylcarbonyl group, a phenylalkenylcarbonyl group, a hydroxycarbonylalkenylcarbonyl group, an alkoxycarbonylalkylcarbonyl group, an alkoxyalkoxycarbonyl group, a monoalkylaminocarbonyl group, a dialkylaminocarbonyl group, a phenylaminocarbonyl group, a benzylaminocarbonyl group, a halobenzylaminocarbonyl groupl an alkoxycarbonyl group, a haloalkoxycarbonyl group, a benzyloxycarbonyl group, an alkenyloxycarbonyl group, an alkynyloxycarbonyl group, an alkylsulfonyl group, a haloalkylsulfonyl group, a benzylsulfonyl group which may be substituted by an alkoxycarbonyl group, a phenylsulfonyl group which may be substituted by an alkoxycarbonyl group, a halopheylsulfonyl group, an alkyl(thiocarbonyl) group, a haloalkyl(thiocarbonyl) group, a benzyl(thiocarbonyl) group, a halobenzyl(thiocarbollyl) group, an alkenyl(thiocarbonyl) group, an alkynyl(thiocarbonyl) group which may be substituted by a cyano group, an alkylamino(thiccarbonyl) group, a phenylamino(thiocarbonyl) group, a dialkylamino(thiocarbonyl) group, a benzyloxy group or a group of the formula   wherein each of R5 and R6 which may be the same or different, is a hydrogen atom, an alkyl group or an alkoxycarbonyl group, or R5 and R6 form together with the adjacent nitrogen atom a morpholino group, or R3 and R4 form together with the adjacent nitrogen atom, an azido group, an isothiocyanate group, a phthalimide group, a maleimide group, a succinic acid imide group, a pyrrolidinyl group, a piperidino group, a pyrrole group, a morpholino group, a group of the formula   wherein n is 0 or 1, and m is 1 or 2, or a group of the formula   wherein each of R7 and R8 which may be the same or different, is a hydrogen atom, an alkyl group, a dialkylamino group, an amino group, an alkylthio group, a phenyl group or a benzyl group, and R9 is a hydrogen atom, an alkyl group, an alkenyl. group, a benzyl group, an alkali metal atom, an alkaline earth metal atom or an organic amine cation; or a salt thereof.