Kureha Kagaku Kogyo Kabushiki Kaisha

Yoshikazu Kubota

Hisashi Kanno

Tsutomu Sato

Takafumi Shida

Masato Arahira

Isao Ichinose

Shiro Yamazaki

Hiroyasu Shinkawa

Takeo Watanabe

Hideo Arabori

Susumu Shimizu

Yoichi Kanda

Susumu Ikeda

Youichi Kanda

Takuro Tokuda

Yutaka Konai

Shoichiro Hayashi

Koki Sato

Kouichi Kodama

Tutomu Takagi

Yuuichi Kokagi

N-(unsubstituted or substituted)-4-substituted-6-(unsubstituted or substituted)phenoxy-2-pyridinecarboxamides or thiocarboxamides, processes for producing the same, and herbicides

Process for producing pyridinecarboxamides or thiocarboxamides

1. A benzyloxypyrimidine derivative of the formula (I): ##STR1## wherein R.sup.1 represents hydrogen, a halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkoxy, C.sub.3 -C.sub.5 alkenyloxy, C.sub.1 -C.sub.4 alkylthio, or cyano;

Benzyloxypyrimidine derivative, processes for producing the same and

A 2-benzyloxy-4-phenoxypyrimidine derivative represented by the formula (I): ##STR1## wherein R.sup.1 represents hydrogen, a halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkoxy, C.sub.3 -C.sub.5 alkenyloxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 haloalkylthio, cyano, or phenyl;

2-benzyloxy-4-phenoxypyrimidine derivative, processes for producing the

A 2-(unsubstituted or substituted) (benzyloxy or phenoxy)-4-substituted-6-(meta-substituted phenoxy)pyridine represented by the formula (I): ##STR1## wherein R represents C.sub.1 -C.sub.4 alkoxy or cyano; each X, which may be identical or different if n is greater than 1, represents a halogen, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkoxy, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 haloalkythio, C.sub.3 -C.sub.5 alkenyloxy, or C.sub.3 -C.sub.5 alkynyloxy; Y represents trifluoromethyl, difluoromethoxy, trifluoromethoxy, or trifluoromethylthio; m represents an integer of 0 or 1; and n represents an integer of 0 to 5, which is useful as a herbicide.

2-(unsubstituted or substituted) (benzyloxy or

A 2-phenoxy-6-thienylmethyloxypyridine derivative represented by the formula (I): ##STR1## wherein R represents hydrogen, a halogen, cyano, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 alkylamino, or di (C.sub.1 -C.sub.4 alkyl) amino;

2-phenoxy-6-thienylmethyloxypyridine derivative and herbicidal

A herbicidal composition comprising a herbicidally effective amount of a 2-benzyloxypyrimidine derivative represented by the formula (I): ##STR1## wherein R.sup.1 and R.sup.2 are each independently H, a halogen, hydroxyl, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.3 -C.sub.5 alkenyl, C.sub.3 -C.sub.5 alkynyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkoxy, C.sub.3 -C.sub.5 alkenyloxy, C.sub.3 -C.sub.5 alkynyloxy, C.sub.1 -C.sub.4 alkylthio, or phenyl;

Herbicidal composition containing 2-benzyloxypyrimidine derivatives,

Disclosed herein are the derivative of benzyl ether represented by the formula (I) ##STR1## which is useful as an intermediate compound of the derivatives of 1,5-diphenyl-1H-1,2,4- triazole-3-carboxamide represented by the formula (II), ##STR2## wherein R is a straight-chain alkyl group having 1 to 10 carbon atoms which is non-substituted or substituted with 1 to 19 fluorine atoms, a branched alkyl group having 3 to 10 carbon atoms which is non-substituted or substituted with 1 to 19 fluorine atoms, a cyclic alkyl group having 3 to 10 carbon atoms, an alkyl group having 1 to 3 carbon atoms which is substituted with an alicyclic structure having 3 to 7 carbon atoms, a phenyl group or an aralkyl group having 7 to 9 carbon atoms; X.sup.1 is a halogen or an alkyl group having 1 to 3 carbon atoms; X.sup.2 is a hydrogen, a halogen or an alkyl group having 1 to 3 carbon atoms; Y.sup.1 is a hydrogen or a fluorine; Y.sup.2 is a hydrogen or a fluorine; and Z is a nitro group or an amino group.

Benzylether derivatives

Disclosed herein are a benzyl ether compound represented by the general formula (I): ##STR1## wherein R represents a branched alkyl group of 4 to 8 carbon atoms, a cycloalkyl group of 4 to 8 carbon atoms, an alkyl group of 1 to 3 carbon atoms having an alicyclic group of 3 to 7 carbon atoms, an aralkyl group of 7 to 9 carbon atoms, an alkyl group of 2 to 4 carbon atoms having an alkoxy group of 1 to 4 carbon atoms, an unsaturated alkyl group of 3 to 6 carbon atoms, a straight-chain alkyl group of 2 to 8 carbon atoms which has been substituted by 1 to 15 fluorine atoms, or a branched alkyl group of 3 to 8 carbon atoms which has been substituted by 1 to 15 fluorine atoms, and X represents a nitro group or an amino group, provided that when X is a nitro group, R is neither an aralkyl group nor an ethyl group substituted by fluorine atom(s), a process for producing the same.

Benzyl ether compound and process for producing the same

Disclosed herein is a 4,5-dihydro-1H-1,2,4-triazole-3-carboxamide derivative represented by the formula (I): ##STR1## wherein R represents a straight-chain alkyl group having 1 to 10 carbon atoms which is non-substituted or substituted with 1 to 19 fluorine atoms or a branched alkyl group having 3 to 10 carbon atoms which is non-substituted or substituted with 1 to 19 fluorine atoms; X.sup.1 represents a halogen atom or an alkyl group having 1 to 3 carbon atoms; X.sup.2 represents hydrogen atom, a halogen atom or an alkyl group having 1 to 3 carbon atoms; Y.sup.1 represents hydrogen atom or fluorine atom; and Y.sup.2 represents hydrogen atom or fluorine atom. The derivatives of the formula (I) have high herbicidal activities and also show a excellent selectivity in their actions for killing weeds alone while doing any practical harm to the crops such as rice, wheat and corn.

4,5-dihydro-1H-1,2,4-triazole-3-carboxamide derivatives and herbicidal

Disclosed herein is a derivative of 1,5-diphenyl-1H-1,2,4-triazole-3-carboxamide represented by the formula (I): ##STR1## wherein R is a straight-chain alkyl group having 1 to 10 carbon atoms which is non-substituted or substituted with 1 to 19 fluorine atoms, a branched alkyl group having 3 to 10 carbon atoms which is non-substituted or substituted with 1 to 19 fluorine atoms, a cyclic alkyl group having 3 to 10 carbon atoms, an alkyl group having 1 to 3 carbon atoms which is substituted with an alicyclic structure having 3 to 7 carbon atoms, a phenyl group or an aralkyl group having 7 to 9 carbon atoms; X.sup.1 is a halogen or an alkyl group having 1 to 3 carbon atoms; X.sup.2 is a hydrogen, a halogen or an alkyl group having 1 to 3 carbon atoms; Y.sup.1 is a hydrogen or a fluorine; and Y.sup.2 is a hydrogen or a fluorine, and the herbicidal compositions containing said derivatives as active ingredient therefor. The derivative of 1,5-diphenyl-1H-1,2,4-triazole-3-carboxamide represented by the formula (I) of the present invention is the compound having high herbicidal activity and also showing excellent selectivity for killing weeds alone without doing any serious harm to the crops such as rice, wheat and corn.

1,5-diphenyl-1H-1,2,4-triazole-3-carboxamide derivatives and herbicidal

Disclosed herein are a derivative of 4,5-dihydro-1H-1,2,4-triazole-3-carboxamide represented by the formula (Io): ##STR1## wherein R.sup.1 represents a hydrogen atom, a halogen atom, an alkyl group of 1 to 3 carbon atoms or an alkoxy group of 1 to 3 carbon atoms, R.sup.2 represents a hydrogen atom or a halogen atom and R represents a straight-chain alkyl group of 1 to 8 carbon atoms, a branched-chain alkyl group of 3 to 8 carbon atoms, a cycloalkyl group of 3 to 8 carbon atoms, a (cycloalkyl)alkyl group of 4 to 8 carbon atoms, an alkenyl group of 3 to 8 carbon atoms, an alkynyl group of 3 to 8 carbon atoms, an alkoxyalkyl group of 3 to 8 carbon atoms, a phenyl group, an aralkyl group of 7 to 9 carbon atoms, a phenyl group substituted by halogen atom(s) or an alkyl group of 2 to 8 carbon atoms which is substituted by fluorine atom(s), an intermediate for producing the derivative and a herbicidal composition containing the derivative as an active ingredient.

Derivative of 4,5-dihydro-1H-1,2,4-triazole-3-carboxamide, and

Disclosed herein is a process for producing i-brassicasterol, comprising charging a mixture of i-sterols derived from a mixture of sterols including brassicasterol into a column packed with a filler obtained by chemically binding alkyl group(s) of 15 to 24 carbon atoms to silica, and subjecting said mixture of i-sterols to reversed-phase partition column-chromatography while using (i) an alcohol of one to three carbon atoms or a mixture therof, or (ii) a mixed solvent comprising more than 50% by volume of said alcohol(s) and a solvent other than said alcohol(s) as an eluent, thereby isolating and purifying i-brassicasterol.

Process for producing i-brassicasterol

Plants which have been sprayed with N-alkylalkanolamines and/or N-alkylalkanolammonium salts have been found to show much less tendency of suffering plant virus diseases when applied as they are or after being dissolved in solvent. The N-alkylalkanolamine is prepared by reacting an alkanolamine with an alkyl halide in the presence of a basic substance.

Control of plant virus diseases

Disclosed herein control of plant-virus diseases by applying a compound obtained by reducing the reaction product of an n-alkylamine with a sugar or a salt thereof on the plant to be protected from the plant-virus as an active ingredient.

Growing community of inventors

Iwaki, Japan

Yoshikazu Kubota