摘要:
A substituted 6-halogeno-tert.-butyl-1,2,4-triazin-5-one of the formula ##STR1## in which R.sup.1 is an amino or methyl group,R.sup.2 is an alkylmercapto, alkylamino or dialkylamino group,X is a halogen atom, andY and Z each independently is a hydrogen or halogen atom,which possesses selective herbicidal activity. A synthesis involving the novel intermediates ##STR2## in which X, Y and Z have the above-mentioned meaning andQ is CN, CONH.sub.2 or COOH,is also shown.
摘要:
3-Alkenylmercapto-, 3-alkinylmercapto-, 3-alkenylamino- and 3-alkinylamino-4-amino-6-tert.-butyl-1,2,4-triazin-5-ones of the general formula ##STR1## in which A represents a sulphur or a radical of the general formula --NR.sup.2 --,R.sup.2 represents a hydrogen atom or an alkyl group,R.sup.1 represents an alkenyl or alkinyl group,X represents a halogen atom or an alkoxy group, andY represents a hydrogen or halogen atom or an alkoxy group,are new, are prepared as described, and find use as herbicides.
摘要:
A process for preparing an .alpha.-ketonitrile of the formula ##STR1## in which R is optionally substituted aryl, comprising reacting a cyanohydrin of the formula ##STR2## with sulphuryl chloride or thionyl chloride.
摘要:
Acyl cyanides of the formula ##STR1## in which R represents an optionally substituted alkyl group having 1 to 8 carbon atoms, an optionally substituted cycloalkyl group having 3 to 12 carbon atoms or an optionally substituted aryl group, or an optionally substituted 5-membered or 6-membered heterocyclic radical which additionally can be fused to a benzene ring,are obtained in high yields by reacting carboxylic acid anhydrides of the formula R--CO--O--CO--R (II) with trimethylsilyl cyanide, (CH.sub.3).sub.3 Si--CN (III), if appropriate in the presence of a catalyst and, if appropriate, in the presence of a diluent, at a temperature between 50.degree. and 250.degree. C. The acyl cyanides can be used as intermediate products, for example, for the preparation of certain herbicidally active compounds of the triazinone series.
摘要:
Preparation of a phosphorylated amidine of the formula ##STR1## wherein X is oxygen or sulfur and R, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are various organic radicals, which comprises reacting a phosphoric acid ester-amide of the formula ##STR2## with a carboxamide of the formula ##STR3## at a temperature between about 0.degree. and 50.degree. C., and then reacting the mixture with a base. Advantageously the reaction is effected at about 0.degree. to 15.degree. C. in the presence of an aliphatic or aromatic optionally chlorinated hydrocarbon or an alcohol as an inert solvent, and in the presence of a catalyst.
摘要:
4-Alkylthiosemicarbazides of the formulaAlkyl--NH--CS--NH--NH.sub.2are produced by heating at about 40 to 90.degree. C the novel hydrazinium salts of N-alkyldithiocarbamic acids of the formulaAlkyl--NH--CS--S.sup.- + NH.sub.3 --NH.sub.2in a solvent while removing by-product H.sub.2 S as by use of vacuum or passage of an inert gas through the reaction mixture, advantageously in the presence of a catalytic amount of sulfur to speed up the reaction. Hydrazine hydrate may also be present. The hydrazinium salt starting material can be prepared by reacting the corresponding alkylamine, ammonia, carbon disulfide and hydrazine, and the reaction solution directly employed in the heating step of the present invention without isolation of the intermediate.
摘要:
New alkylcycloalkyl triazolylmethyl ketones of the general formula ##STR1## in which R represents an alkyl group andn is 3, 4, 5, 6 and 7,are produced as described and find use as intermediate products for the preparation of cycloalkyl (.alpha.-triazolyl-.beta.-hydroxy)-ketones, which possess fungicidal and plant growth-regulating properties.
摘要:
A process for the preparation of a 1-azolyl-3,3-dimethyl-1-phenoxy-butan-2-ol of the formula ##STR1## in which X is a nitrogen atom or a CH group,Y each independently is halogen, phenyl, phenoxy, nitro, alkyl, alkoxy or cycloalkyl, andn is 0, 1, 2 or 3,comprising reacting a 1-azolyl-3,3-dimethyl-1-phenoxy-butan-2-one of the formula ##STR2## with formic acid/triethylamine in the form of a 5:2 addition compound of the formula5HCOOHx2N(C.sub.2 H.sub.5).sub.3.The product is a known fungicide.
摘要:
An .alpha.-azolyl-keto derivative of the formula ##STR1## in which R.sup.1 represents optionally substituted alkyl or optionally substituted phenyl,R.sup.2 represents the grouping --CX.sup.1 X.sup.2 R.sup.3 or alkoxy-carbonyl,R.sup.3 represents halogen, halogenoalkyl or optionally substituted phenyl,R.sup.4 represents the grouping --O--CO--R.sup.5, --O(S)--R.sup.6 or --O--S(O).sub.n --R.sup.7, or alkylamino, dialkylamino, optionally substituted phenylamino or halogen,R.sup.5 represents alkyl, halogenoalkyl, alkenyl, alkynyl, cycloalkyl, optionally substituted phenyl, optionally substituted phenylalkyl, alkylamino, dialkylamino or optionally substituted phenylamino,R.sup.6 represents alkyl, alkenyl, alkynyl, cycloalkyl, optionally substituted phenyl or optionally substituted benzyl,R.sup.7 represents alkyl, halogenoalkyl, optionally substituted phenyl or dialkylamino,n represents 1 or 2,X.sup.1 and X.sup.2 each independently represents hydrogen or halogen, andY represents a nitrogen atom or the CH group, or a physiologically acceptable acid addition salt or metal salt complex thereof, which possesses fungicidal properties.
摘要:
A process for preparing monochloropinacoline (1-chloro-3,3-dimethyl-butan-2-one) by contacting a stoichiometric excess of pinacoline with chlorine at a temperature of -20.degree. to +70.degree. C.