Abstract: A process for the preparation of N,N-dimethyl-N'-(2-bromo-4-methyl-phenyl)-triazene of the formula ##STR1## comprising (a) reacting N-acetyl-p-toluidine of the formula ##STR2## with bromine at a temperature between about 0.degree. and 100.degree. C., to give the intermediate product of the formula ##STR3## (b) reacting the intermediate product with hydrochloric acid by either (i) adding a dilute solution of aqueous hydrochloric acid to the intermediate product in its reaction solution and heating the mixture to a temperature between about 50.degree. and 120.degree. C., or(ii) precipitating the intermediate product from its reaction solution by mixing with water and filtering off, and without purification or drying heating the precipitate with dilute aqueous hydrochloric acid to a temperature between about 50.degree. and 120.degree. C.

Abstract: In the preparation of a phenoxy-azolyl-butanone derivative of the formula ##STR1## in which X is a halogen atom,Y is a hydrogen or halogen atom, andAz is an imidazolyl radical or a 1,2,4-triazolyl radical,wherein dichloropinacolin of the formulaCl.sub.2 CH--CO--C(CH.sub.3).sub.3is reacted with an azole of the formulaAz--Hand a phenol of the formula ##STR2## in the presence of an acid-binding agent, the improvement which comprises carrying out the reaction in the presence of a water-immiscible organic solvent at a temperature between about 40.degree. and 150.degree. C., adding to the solvent at a temperature between about 0.degree. and +80.degree. C. a mineral acid, thereby to precipitate the mineral acid salt of the phenoxy-azolyl-butanone derivative, and separating such salt. Surprisingly the product does not hydrolyze when standing in contact with the mineral acid solution. The product is a known fungicide.

Abstract: In the reaction of 1-chloro-3,3-dimethylbutan-2-one with a phenol to form an ether-ketone, halogenating it to form a halogenoether-ketone and reacting it with imidazole or 1,2,4-triazole to form a 1-azolyl-3,3-dimethyl-1-phenoxybutan-2-one of the formula ##STR1## in which X is N or CH,n is an integer from 0 to 4, andY each independently is halogen, phenyl, phenoxy, nitro, alkyl, alkoxy or cycloalkyl,the improvement which comprises effecting all steps successively in an aromatic hydrocarbon or chlorinated aliphatic or aromatic hydrocarbon as solvent without intermediate isolation. The products are obtained in high yield.

Abstract: In the preparation of O,O-diethyl-O-(1-phenyl-2-cyano-prop-1-enyl)-thionophosphoric acid ester by reacting a benzoic acid ester with propionitrile in the presence of an alkali metal alcoholate and then reacting the reaction mixture with O,O-diethyl-thionophosphoric acid diester chloride, the improvement which comprises employing about 5 to 50 moles of the propionitrile per mole of benzoic acid ester, distilling off the alcohol obtained during the reaction of propionitrile, benzoic acid ester and alcoholate before the addition of the O,O-diethyl-thionophosphoric acid diester chloride, and maintaining the volume of the reaction mixture approximately constant by adding propionitrile during the distillation. Advantageously the alcoholate is sodium methylate, ethylate or tert.-butylate or potassium methylate, ethylate or tert.-butylate, the reaction is effected at about 80.degree. to 120.degree. C., about 5 to 25 moles of propionitrile are employed per mole of benzoic acid ester, about 1 to 1.

Abstract: O,S,N-tri-aliphatic hydrocarbon-thionothiolphosphoric acid ester amides of the general formula ##STR1## in which R, R.sup.1 and R.sup.2, which may be the same or different, each is an alkyl, alkenyl or alkynyl radical with up to 6 carbon atoms, optionally substituted with at least one halo, phenyl, cyano, alkoxy, alkylmercapto, phenylmercapto or naphthylmercapto radical, the mercapto radicals being optionally chloro- or cyano-substituted,Which possess nematocidal, insecticidal, acaridical, fungicidal and mammalian-repellent properties.

Abstract: A process for the preparation of a 1,2,4-triazolyl-(1)-phenoxy-acyl-methane of the formula ##STR1## in which R is alkyl or aryl,Each X independently is alkyl, halogen, alkoxycarbonyl, nitrile, phenyl or nitro, andn is an integer from 0 to 5,Comprising reacting a dihaloketone of the formula(Hal).sub.2 CH--CO--Rin whichHal is halogen, ##STR2## 1,2,4-TRIAZOLE AND WITH A PHENOL OF THE FORMULA T,0011 IN THE PRESENCE OF AN ACID-BINDING AGENT AND DILUENT, AT A TEMPERATURE OF ABOUT 0.degree. TO 150.degree. C. Advantageously the temperature is about 50.degree. to 90.degree. C and about 1 mole of the phenol, about 1 to 1.2 moles of the 1,2,4-triazole and about 2 to 3 moles of the acid-binding agent are used per mole of the dihaloketone.

Abstract: S-(alkoxycarbonyl)-alkyl-thiophosphoric acid ester amides of the general formula ##EQU1## in which R, R' and R" each independently is alkyl of 1 to 10 carbon atoms or lower alkenyl,Y is hydrogen or lower alkyl,Y' is hydrogen, lower alkyl or --CH.sub.2 --CO--OR", andX is oxygen or sulfur,Which possess insecticidal and acaricidal properties.

Abstract: S-(amidocarbonyl)-methyl-O-alkyl monothiophosphoric acid ester amides of the formula ##EQU1## in which R and R' each independently is alkyl of 1 to 6 carbon atoms,R" is alkyl or alkenyl of 1 to 6 carbon atoms optionally carrying at least one chlorine,C.sub.1 -c.sub.6 alkoxy, C.sub.1 -C.sub.6 alkylmercapto or nitrile radical,R"' is hydrogen or acyl, with the proviso that R"' is not hydrogen if R" is unsubstituted alkyl, orR" and R"' conjointly with the nitrogen atom to which they are attached form a heterocyclic ring, which possess insecticidal and acaricidal properties.