American Cyanamid Company

Basf Aktiengesellschaft

Axel Kleemann

Helmut Siegfried Baltruschat

Thomas Maier

Stefan Scheiblich

Robert John Searle

Thekla Haselwander

Gary Mitchell Karp

Michael E Condon

Hans-Joachim Bissinger

Richard J Searle

Stephen Scheiblich

Thekla Hulsen

A method of combating undesired plant growth in cereals, in particular winter cereals such as wheat and barley, which comprises treating the locus of the cereals with an effective amount of one or more compounds of formula I:in which R, Rand X&#x2014;W have the meaning given in the claims.

Method of combating undesired plant growth on cereals

Herbicidal 2-pyrazolyl-6-aryloxypyri(mi)dines

Herbicidal 2-aryloxy-4-methyl-6-pyrazol-1-yl-pyridines

Herbicidal 2-aryloxy-or 2-arylthio-6-arylpyrimidines

A compound is disclosed having the formula: ##STR1## The compound is useful as an active ingredient in a herbicidal composition.

Herbicidal 6-thienyloxypyrid-2-carboxamides

New herbicidal pyridine and pyrimidine derivatives of general formula (I), ##STR1## wherein Z represents a nitrogen atom or a C--H group; A represents an optionally substituted aryl group or an optionally substituted 5- or 6-membered nitrogen-containing heteroaromatic group; n represents an integer from 0 to 2 and R.sup.1 or each R.sup.1 independently represents a hydrogen atom or an optionally substituted alkyl, alkoxy, alkylthio or dialkylamino group; m represents an integer from 0 to 5 and R.sup.2 or each R.sup.2 independently represents a hydrogen or a halogen atom or an optionally substituted alkyl, haloalkyl, haloalkoxy, alkoxy, alkylthio group or a nitro, cyano or a halosulphonyl group; and X represents an oxygen or sulphur atom.

Herbicidal 2-(hetero)aryloxy-6-arylpyridines and

Herbicidal 2-(hetero)aryloxy-6-arylpyridines and 2-Aryl-4-(hetero)aryloxypyrimidines New herbicidal pyridine and pyrimidine derivatives of general formula (1), ##STR1## wherein Z represents a nitrogen atom or a C--H group; A represents an optionally substituted aryl group or an optionally substituted 5- or 6-membered nitrogen-containing heteroaromatic group; n represents an integer from 0 to 2 and R.sup.1 or each R.sup.1 independently represents a hydrogen atom or an optionally substituted alkyl, alkoxy, alkylthio or dialkylamino group; m represents an integer from 0 to 5 and R.sup.1 or each R.sup.1 independently represents a hydrogen or a halogen atom or an optionally substituted alkyl, haloalkyl, haloalkoxy, alkoxy, alkylthio group or a nitro, cyano or a halosulphonyl group; and X represents an oxygen or sulphur atom.

Herbicidal 2-(hetero)aryloxy-6-arylpyridines and 2-aryl-4-(hetero)

New herbicidal pyrimidine derivatives of general formula (I), ##STR1## wherein Z represents a nitrogen atom; A represents a substituted aryl group or an optionally substituted pyridyl or pyrazolyl group; n represents an integer from 0 to 2 and R.sup.1 or each R.sup.1 independently represents a hydrogen atom or an optionally substituted alkyl, alkoxy, alkylthio or dialkylamino group; m represents an integer from 0 to 5 and R.sup.2 or each R.sup.2 independently represents a hydrogen or a halogen atom or an optionally substituted alkyl, haloalkyl, haloalkoxy, alkoxy, alkylthio group or a nitro, cyano or a halosulphonyl group; and X represents an oxygen or sulphur atom.

Herbicidal 2, 6-disubstituted pyridines and 2, 4-disubstituted

There are provided substituted pyridine compounds having the structural formula I ##STR1## Further provided are compositions and methods comprising those compounds for the control of undesirable plant species.

Substituted pyridine herbicidal agents

Herbicidal picolinamide derivatives

Herbicidal picolinamide derivatives are provided having the formula I ##STR1## which Z represents an oxygen or sulphur atom, R.sup.1 and R.sup.2 each independently represents a hydrogen atom or an optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkylalkyl, aryl, aralkyl, alkaryl, hydroxy, alkoxy, alkenyloxy, alkynyloxy, alkylcarbonyl, amino, mono- or di-alkylamino, alkoxycarbonylamino, arylamino, arylalkylamino or dialkylcarbamoyl group, or together represent an alkylene chain which is optionally interrupted by an oxygen, or sulphur atom or by a group --NR-- in which R represents a hydrogen atom or an alkyl group, R.sup.3 independently represents a halogen atom or an alkyl or haloalkyl group, R.sup.4, R.sup.5 and R.sup.6 each independently represents a hydrogen or halogen atom, an optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkylalkyl, aryl, aralkyl, alkaryl, alkoxy, amino, mono- or di-alkylamino, alkoxycarbonylamino, arylamino, dialkylcarbamoyl, acyl or acylamido group or a cyano group, with the proviso that R.sup.5 and R.sup.6 do not represent an acyl, acylamido or cyano group, and n represents 0, 1, 2 or 3.

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Königstein, Germany

Axel Kleemann