Rhone Poulenc Agriculture Limited

May & Baker, Ltd.

Rhone-poulenc Agro

Ian George Buntain

David Alan Roberts

David William Hawkins

Ross Mc Guire

Leslie R Hatton

Christopher John Pearson

Edgar W Parnell

Leslie Roy Hatton

Edgar William Parnell

Susan Mary Cramp

Derek Ian Wallis

Jean-Paul Bulot

Ross McGuire

Paul A Cain

Gillian Mary Little

Brian Malcolm Luscombe

Jean-Louis Clavel

John Harry Wilkinson

Richard G Pennicard

Ross Mcguire

Derivatives of N-phenylpyrazoles

Processes for preparing pesticidal intermediates

N-Phenylpyrazole derivatives of the formula: ##STR1## wherein R.sup.1 represents cyano, nitro, halogen, acetyl or formyl; R.sup.2 represents R.sup.5 SO.sub.2, R.sup.5 SO or R.sup.5 S in which R.sup.5 is optionally halogen substituted alkyl, alkenyl or alkynyl; R.sup.3 represents a hydrogen atom or a group NR.sup.6 R.sup.7 wherein R.sup.6 and R.sup.7 each represent hydrogen, alkyl, alkenylalkyl, alkynylalkyl, formyl, optionally halogen substituted alkanoyl, optionally halogen substituted alkoxycarbonyl, or alkoxymethyleneamino, halogen, or R.sup.6 and R.sup.7 together form a cyclic imide and R.sup.4 represents a substituted phenyl group possess arthropodicidal, plant nematocidal, anthelmintic and anti-protozoal properties; their preparation, compositions containing them and their use are described.

The invention relates to 4-substituted isoxazole derivatives of formula I: ##STR1## wherein R, R.sup.1, R.sup.2, Q and n have the meanings defined in the description, which possess valuable herbicidal properties.

Herbicidal 4-substituted isoxazol

N-Phenylpyrazole derivatives of the formula: ##STR1## wherein R.sup.1 represents cyano, nitro, halogen, acetyl or formyl; R.sup.2 represents R.sup.5 SO.sub.2, R.sup.5 SO or R.sup.5 S in which R.sup.5 is optionally halogen substituted alkyl, alkenyl or alkynyl;

Herbicidal 4-substituted isoxazoles

The invention relates to 4-substituted isoxazole derivatives of formula I: ##STR1## wherein R, R.sup.1, R.sup.2, Q and n have the meaning defined in the description which possess valuable herbicidal properties.

Intermediates to herbicidal 4-substituted isoxazoles

N-Phenylpyrazole derivatives of the formula: ##STR1## wherein R.sup.1 represents cyano, nitro, halogen, acetyl or formyl;

Derivatives of n-phenylpyrazoles

The invention provides N-phenylpyrazole derivatives of the formula: ##STR1## wherein R.sup.1 represents alkyl optionally substituted by halogen, R.sup.2 represents an optionally substituted aryl or aralkyl group, R.sup.3 represents a phenyl group substituted in the 2-position by halogen; in the 4-position by optionally halo substituted alkyl or alkoxy; and optionally in the 6-position by halogen; and m and n are independently 0, 1 or 2; which are active against arthropod, plant nematode, helminth and protozoal pests.

N-phenylpyrazole derivatives

An N-phenylpyrazol-4-yl ether derivative of the formula: ##STR1## wherein R.sup.1 represents halogen, alkyl or alkoxy unsubstituted or substituted by halogen, alkylthio or alkylsulphinyl substituted by one or more halogen atoms, nitro, cyano, or alkylsulphonyl unsubstituted or substituted by halogen and n is 1 to 5, R.sup.3 represents hydrogen, halogen, cyano, nitro or alkyl group R.sup.2 which may be unsubstituted or substituted by halogen, R.sup.4 represents alkyl, alkenyl or alkynyl which is substituted by halogen, R.sup.5 represents hydrogen or an amino group NR.sup.6 R.sup.7 wherein R.sup.6 and R.sup.7 represent hydrogen, alkyl, formyl or alkanoyl (or R.sup.6 and R.sup.7 together form a 5 or 6 membered cyclic imide) which may be unsubstituted or substituted by halogen, or alkoxycarbonyl unsubstituted or substituted by halogen, or R.sup.5 represents alkoxymethyleneamino unsubstituted or substituted on methylene by alkyl, or represents halogen, or pyrrol-1-yl, pyrazol-1-yl, 1,2,3-triazol-1-yl, 1,2,4-triazol-4-yl, piperidino, pyrrolidino, morpholino or N-alkylpiperazino optionally substituted by alkyl or phenyl and pesticidally acceptable acid addition salts thereof, possess arthropodicidal, nematocidal, anthelmintic and anti-protozoal activity.

N-phenylpyrazol-4-yl ether derivatives

An N-phenylpyrazole derivative of the formula: ##STR1## wherein R.sup.1 represents cyano, nitro or halogen;

Derivatives of N-phenylpyrazoles, compositions and use

Herbicidal compounds of the formula: ##STR1## wherein A represents R.sup.1 R.sup.2 N-- (wherein R.sup.1 represents C.sub.1-8 alkyl or C.sub.2-8 alkenyl or alkynyl unsubstituted or substituted by CN, OH, C.sub.1-6 alkoxy, carboxy, C.sub.2-9 alkoxycarbonyl, aminocarbonyl optionally substituted by C.sub.1-8 alkyl or C.sub.2-8 alkenyl, C.sub.1-8 alkoxyaminocarbonyl, C.sub.1-8 alkanesulphonamidocarbonyl, --C(.dbd.O)Het, where Het represents a nitrogen-containing heterocyclic group, or one or more halogen atoms or R.sup.1 represents C.sub.3-6 cycloalkyl optionally substituted by C.sub.1-4 alkyl and R.sup.2 represents H or R.sup.1, or R.sup.1 represents C.sub.1-4 alkylthio and R.sup.2 represents H, or A represents R.sup.p (R.sup.q)--C.dbd.N-- (wherein R.sup.p represents C.sub.1-4 alkoxy or amino substituted by one or two C.sub.1-4 alkyl groups and R.sup.q represents H or C.sub.1-4 alkyl) or A represents 2-oxo-azetidin-1-yl, 2-oxo-pyrrolidin-1-yl or 2-oxo-piperidin-1-yl optionally substituted by C.sub.1-6 alkyl or A represents open-chain alkenylcarbonylamino and B represents phenyl substituted in the 2- position by F, Cl, Br, NO.sub.2, Me or Et and in the 4- position by F, Cl, Br, C.sub.1-4 (optionally substituted by halogen) or C.sub.2-4 alkenyl and alkynyl and optionally substituted in the 3-, 5- and 6- positions by F, Cl, Br, NO.sub.2, Me or Et, or B represents 2,3-dichlorophenyl, and salts thereof.

Herbicidal 5-amino-4-cyano-1-phenylpyrazoles

New N-phenylpyrazole derivatives of the formula: ##STR1## (wherein R.sup.12 represents a chlorine atom, R.sup.13 represents a hydrogen, fluorine or chlorine atom, R.sup.14 represents a hydrogen or fluorine atom and R.sup.15 represents a hydrogen, fluorine or chlorine atom, with the proviso that when R.sup.14 represents a fluorine atom, R.sup.15 represents a fluorine or chlorine atom, or R.sup.12, R.sup.13 and R.sup.15 each represents a fluorine atom and R.sup.14 represents a hydrogen or fluorine atom) possess useful herbicidal properties.

Growing community of inventors

Ongar, United Kingdom

David Alan Roberts