Abstract: 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 R1, R2 and X—W have the meaning given in the claims.

Abstract: The invention relates to novel compounds of formula I: wherein R1 through R5, A, X and Z have the meaning set forth in the description.

Abstract: The invention relates to novel compounds of formula I: 1

Abstract: The novel compounds of formula I: wherein A has the meaning set forth in the description, and herbicidal compositions containing such compounds as active ingredients.

Abstract: 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: 1

Abstract: The novel compounds of formula I: (A, B, R1, R2, R3, X and m are defined in the specification) show selective herbicidal activity. The new compounds can be prepared according to known methods and can be used as herbicides in agriculture and related fields.

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

Abstract: 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.

Abstract: Herbicidal 2-(hetero)aryloxy-6-arylpyridines and 2-Aryl-4-(hetero)aryloxypyrimidinesNew 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Compounds of the formula: ##STR1## wherein R.sub.1 and R.sub.2 each independently represents hydrogen, optionally substituted alkyl, aryl, alkenyl, alkynyl, cycloalkyl, cycloalkylalkyl, aralkyl, alkaryl, hydroxy, alkoxy, alkenyloxy, alkynyloxy, alkylcarbonyl, alkoxycarbonyl, amino, mono- or dialkylamino, alkoxycarbonylamino, optionally substituted heterocycle or arylamino, dialkylcarbamoyl, trialkylsilyl or fused ring structure, or together form an alkenylene chain or an alkylene chain which is optionally interrupted by oxygen or sulphur or --NR--, R being hydrogen or alkyl; R.sub.3 represents hydrogen or halogen, or optionally substituted alkyl, alkoxy, aryl or aryloxy, or cyano, carboxy, alkoxycarbonyl, (alkylthio) carbonyl, alkylcarbonyl, amido, alkylamido, nitro, alkenyloxy, alkynloxy, alkylthio, haloalkylthio, alkenylthio, alkynylthio, alkylsulphinyl, alkylsulphonyl, alkyloximinoalkyl or alkenyloximinoalkyl; R.sub.

Abstract: An improved method of preparing 1,6-di(N.sup.3 -cyano-N.sup.1 -guanidino) hexane from alkali dicyanamide and a hexamethylene diammonium salt in alcoholic solution or suspension. The reaction is carried out in the presence of a limited amount of water and of a catalytic amount of a base, preferably a tertiary amine. The pH of the reaction mixture at the start of the reaction is 8 to 10. After the reaction is over, the reaction mixture is compounded with water at a temperature above 80.degree. C. and the coarse product which crystallizes out is separated from the liquid phase.Preferably, sodium dicyanamide and hexamethylene diamine dihydrochloride, preferably formed in situ from aqueous 1,6-diaminohexane and aqueous hydrochloric acid, are reacted at pH 9-9.5 in n-butanol in the presence of 0.1 to 20% by wt. water in relation to the solvent including water.1,6-di(N.sup.3 -cyano-N.sup.

Abstract: 1,2-Dithiolane-3-pentanoic acid (D,L-thioctic acid) of the formula ##STR1## is prepared by a process comprising (a) reacting a 2-(3-alkylthiopropionyl)-cyclopentanone-1 of the formula ##STR2## where R is a C.sub.1 -C.sub.4 alkyl, phenyl or benzyl in aqueous alkaline solution at a temperature of about 20.degree. C. to about 90.degree. C. to form the corresponding carboxylic acid of formula VI ##STR3## (b) reacting the compound of formula VI with an alkyl mercaptan at a temperature between -20.degree. C. and 0.degree. C. to form the corresponding thioketal of formula VII ##STR4## (c) reacting the compound of formula VII with sodium in liquid ammonia at temperature temperture between -60.degree. C. and -10.degree. C.

Abstract: Compounds of formula ##STR1## wherein the radicals R.sub.1 and R.sub.2 are the same or different and represent hydrogen, halogen atoms, a trifluoromethyl group, a cyano, a nitro group, an amino group, a mono-C.sub.1 -C.sub.6 -alkylamino group, a di-C.sub.1 -C.sub.6 -alkylamino group, an amino group that is substituted by a phenyl C.sub.1 -C.sub.4 -alkyl radical, a C.sub.2 -C.sub.6 -alkanoyl-amino group, a C.sub.1 -C.sub.6 -alkoxycarbonyl amino group, a C.sub.1 -C.sub.6 -alkyl group optionally substituted by a phenyl radical, a hydroxy group, a C.sub.1 -C.sub.6 -alkoxy group, a C.sub.2 -C.sub.6 -alkanoyloxy group, a phenoxy group or represent a carbamoyl group optionally substituted by one or two C.sub.1 -C.sub.6 -alkyl groups and the radical A is an acyl group which is derived from an amino acid as well as processes for their preparation.

Abstract: The invention relates to the preparation of optically active salts of the general formula ##STR1## from which the corresponding optically active 3-chloro-2-hydroxypropyltrimethyl ammonium chloride can be obtained by treatment with mineral acid.The L(-) form of this compound is a valuable component for the synthesis of L(-) carnitine.

Abstract: A method for the catalytic epoxidation of olefines with hydrogen peroxide in the presence of tungsten oxo complexes or of a binuclear compound of the type .mu.-oxobis [porphyrinato-oxo tungsten (V)] or cis-oxo peroxo tungsten (VI) prophyrin or cis-dioxo porphyrinatotungsten (VI) with octaethyl porphyrin or 5,10,15,20-tetraphenyl porphyrin or 5,10,15,20-tetra(4-pyridyl)-porphyrin as ligands.