Plant protecting and regulating compositions – Plant growth regulating compositions – Organic active compound containing
Patent
2000-02-23
2000-12-12
Page, Thurman K.
Plant protecting and regulating compositions
Plant growth regulating compositions
Organic active compound containing
504218, 504221, 504223, 504244, 504251, 504254, 504256, 504257, 546298, 546296, A01N 4300, A01N 4346, A01N 4372, A01N 4384, A01N 4340
Patent
active
061599018
DESCRIPTION:
BRIEF SUMMARY
This application is a 371 of PCT/JP98/02842 filed Jun. 25, 1998.
TECHNICAL FIELD
The present invention relates to a 6-phenoxy picolinic acid alkylidene hydrazide derivative, a process for producing the derivative and a herbicide containing the derivative as an effective ingredient.
BACKGROUND ART
The 6-phenoxy picolinic acid alkylidene hydrazide derivative according to the present invention is a novel compound which has never been described in any literature.
Hitherto, it has been highly demanded to provide a herbicide capable of lessening the amount existing or remaining in environment after use and exhibiting an excellent herbicidal effect even when used in a small amount; a herbicide capable of exhibiting an excellent herbicidal effect with a high selectivity between crops and weeds irrespective of change of environmental conditions; and a herbicide which is free from phytotoxicity or chemical injury even upon the succeeding crop of double cropping.
DISCLOSURE OF THE INVENTION
The present invention have been made in order to meet the above-described demands. It is an object of the present invention to provide a novel compound which can exhibit an excellent selective herbicidal effect even when used in a small amount and is free from phytotoxicity or chemical injury even upon the succeeding crop of double cropping, a process for producing such a compound, and a novel herbicide containing the compound as an effective ingredient.
As a result of the present inventors' earnest studies for developing a novel industrially useful pyridine derivative, it has been found that 6-phenoxy picolinic acid alkylidene hydrazide derivative as a novel compound which has never been described in any patent documents or literatures, can exhibit an excellent herbicidal effect. The present invention has been attained on the basis of this finding.
That is, in a first aspect of the present invention, there is provided a 6-phenoxy picolinic acid alkylidene hydrazide derivative represented by the general formula (I): ##STR1## wherein R.sup.1 is a halogen atom, a C.sub.1 to C.sub.4 alkyl group, a C.sub.1 to C.sub.4 haloalkyl group, a C.sub.1 to C.sub.4 alkoxy group, a C.sub.1 to C.sub.4 haloalkoxy group, a C.sub.1 to C.sub.4 alkylthio group, a C.sub.1 to C.sub.4 alkylamino group, a C.sub.1 to C.sub.4 dialkylamino group or a (C.sub.1 to C.sub.4 alkyl) (C.sub.7 to C.sub.8 aralkyl)amino group; be substituted with X.sup.a or X.sup.b, said group being a C.sub.1 to C.sub.10 alkyl group, a C.sub.2 to C.sub.6 alkenyl group, a C.sub.2 to C.sub.6 alkynyl group, a C.sub.3 to C.sub.6 cycloalkyl group, a phenyl group or an arylalkyl group (whose alkyl moiety has 1 to 3 carbon atoms) [wherein the chain hydrocarbon moiety of each of R.sup.2 and R.sup.3 is constituted by a longest carbon chain as a main chain, a C.sub.1 to C.sub.4 alkyl group bonded as a side chain to said main chain is excluded from R.sup.2 and R.sup.3, and said C.sub.1 to C.sub.4 alkyl group as a side chain is regarded as substituent of each of R.sup.2 and R.sup.3 ]; a C.sub.1 to C.sub.4 alkylthio group, a C.sub.1 to C.sub.4 alkyl group (which is not bonded to terminal positions of R.sup.2 and R.sup.3 when R.sup.2 and R.sup.3 are a C.sub.1 to C.sub.10 alkyl group), a C.sub.3 to C.sub.6 cycloalkyl group or a cyano group; atoms of R.sup.2 and R.sup.3, respectively, which can be substituted with X.sup.a and X.sup.b, respectively; may be directly bonded with each other to form a ring, or said R.sup.2 and R.sup.3 may be bonded to each other through an oxygen atom, a sulfur atom or a nitrogen atom (the nitrogen atom may be alkylated with a C.sub.1 to C.sub.4 alkyl group) to form a ring; group, a C.sub.1 to C.sub.4 alkoxy group, a C.sub.1 to C.sub.4 haloalkoxy group, a C.sub.1 to C.sub.4 alkylthio group, a C.sub.1 to C.sub.4 haloalkylthio group or a halogen atom; and than 2, R.sup.1 s, X.sup.a s, X.sup.b s and Ys may be the same or different, respectively.
In a second aspect of the present invention, there is provided a process for producing a 6-phenoxy picolinic acid alkyliden
REFERENCES:
patent: 5384305 (1995-01-01), Foster et al.
Kanda Yoichi
Kanno Hisashi
Sato Koki
Sato Tsutomu
Yoshida Kazuo
Kureha Kagaku Kogyo Kabushiki Kaisha
Page Thurman K.
Robinson Binta
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