摘要:
1-alkyl-pyrazole-5-carboxylic acid esters are prepared by reacting the enolate of a 2,4-diketocarboxylic acid ester with an N-alkylhydrazinium salt in the presence of a solvent. This process allows a particularly economic preparation of 1-alkyl-pyrazole-5-carboxylic acid esters in a simple manner and with only little formation of undesirable isomers.
摘要:
Nitropyrazole esters of the formula ##STR1## in which R.sup.1 represents C.sub.1 -C.sub.6 -alkyl, are prepared by nitration of the corresponding pyrazole esters. The nitropyrazole esters permit the preparation of a known nitropyrazole amide in a particularly simple and economical manner and thereby improve the preparation of active compounds which are accessible from the nitropyrazole amide.
摘要:
Leather can be pretreated to obtain good body, soft feel, and excellent grain smoothness and solidity with products having a molecular weight of 700 to 30,000 and which are obtainable by reaction ofA. polysuccinimide having a molecular weight, determined as the number-average, of 500 to 10,000, withB. 5 to 90 mol % based on the succinimide units of polysuccinimide A, and/or secondary amine, the nitrogen substituents of which contain 1 to 60 carbon atoms and which can be unsubstituted or substituted, at least 2.5 mol % of the nitrogen substituents of the amine containing at least 12 carbon atoms,C. optionally, (i) derivatives of C.sub.1 -C.sub.18 -monocarboxylic acids, C.sub.2 -C.sub.10 -dicarboxylic acids, and/or (ii) monoisocyanates, diisocyanates epichlorohydrin (for reaction of amino and/or hydroxyl groups on the nitrogen substituents of the reaction product of A and B), andD. 95 to 10 mol % of ring-opening base in the presence of water.
摘要:
Substituted 1,3,4 -oxa- diazolinones of the formula (I) ##STR1## in which X represents O andY represents O or S,are disclosed as useful to combat endoparasites.
摘要:
Substituted 1,3,4-oxa- and thiadiazolinones of the formula (I) ##STR1## in which R.sup.1 represents hydrogen, alkyl, alkoxy, alkylthio, halogen, halogenoalkyl, halogenoalkoxy or halogenoalkylthio,R.sup.2 represents one or more identical or different radicals from among hydrogen, alkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkoxy, halogenoalkylthio, alkylenedioxy, halogenoalkylenedioxy, halogen, CN, NO.sub.2, NH.sub.2, alkylamino, dialkylamino, alkylcarbonyl, carbalkoxy, alkylsulphonyl, arylsulphonyl, sulphamoyl, alkylsulphamoyl, dialkylsulphamoyl, aryl, aryloxy or arylthio, which, in turn, can be sutstituted,R.sup.3 represents one or more identical or different radicals from among hydrogen, alkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkoxy, halogenoalkylthio, alkylenedioxy, halogenoalkylenedioxy, halogen, CN, NO.sub.2, alkylcarbonyl, carbalkoxy, alkylsulphonyl, arylsulphonyl, sulphamoyl, alkylsulphamoyl, dialkylsulphamoyl, aryl, aryloxy or arylthio, which, in turn, can be substituted,X represents O or S, andY represents O or S,with the exception of the compounds 5-phenoxy-3-(3,4-dichlorophenyl)-1,3,4-oxadiazol-2(3H)-one, and 5-phenoxy-3-(3-chloro-4-fluorophenyl)-1,3,4-oxadiazol-2-(3H)-one are disclosed as useful to combat endoparasites. Compositions containing these compounds and process for preparing them are also disclosed.The present invention relates to new substituted 1,3,4-oxa(thia)diazolinones, process for their preparation, and their use for combating endoparasites.Substituted 2-alkoxy-1,3,4-oxathiazolinones and their use against endoparasites are already known, but their actions are not always satisfactory (DE-OS (German Published Specification) 2,604,110). Previously described compounds are furthermore 2-aryloxy-1,3,4-oxadiazolinones (Pilgram, J. Heterocyclic Chem. 39, 823 (1982)); however, nothing is known about their use for combating endoparasites.The present invention relates to substituted 1,3,4-oxa-and thiadiazolinones of the formula (I) ##STR2## in which R.sup.1 represents hydrogen, alkyl, alkoxy, alkylthio, halogen, halogenoalkyl, halogenoalkoxy or halogeno-alkylthio,R.sup.2 represents one or more identical or different radicals from amongst hydrogen, alkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkoxy, halogeno-alkylthio, alkylenedioxy, halogenoalkylenedioxy, halogen, CN, NO.sub.2, NH.sub.2, alkylamino, dialkylamino, alkylcarbonyl, carbalkoxy, alkylsulphonyl, arylsulphonyl, sulphamoyl, alkylsulphamoyl, dialkyl-sulphamoyl, aryl, aryloxy or arylthio, which, in turn, can be substituted,R.sup.3 represents one or more identical or different radicals from amongst hydrogen, alkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkoxy, halogeno-alkylthio, alkylenedioxy, halogenoalkylenedioxy, halogen, CN, NO.sub.2, alkylcarbonyl, carbalkoxy, alkyl-sulphonyl, arylsulphonyl, sulphamoyl, alkyl-sulphamoyl, dialkylsulphamoyl, aryl, aryloxy or arylthio, which, in turn, can be substituted,X represents 0 or S, andY represents 0 or S,with the exception of the compounds 5-phenoxy-3-(3,4-dichlorophenyl)-1,3,4-oxadiazol-2(3H)-one and 5-phenoxy-(3-chloro-4-fluorophenyl)-1,3,4-oxadiazol-2-(3H)-one.The invention also relates to a process for the preparation of the new substituted 1,3,4-oxa- and thiadiazolinones of the formula ##STR3## in which R.sup.1 represents hydrogen, alkyl, alkoxy, alkylthio, halogen, halogenoalkyl, halogenoalkoxy or halogeno-alkylthio,R.sup.2 represents one or more identical or different radicals from amongst hydrogen, alkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkoxy, halogeno-alkylthio, alkylenedioxy, halogenoalkylenedioxy, halogen, CN, NO.sub.2, NH.sub.2, alkylamino, dialkylamino, alkylcarbonyl, carbalkoxy, alkylsulphonyl, aryl-sulphonyl, sulphamoyl, alkylsulphamoyl, dialkyl-sulphamoyl, aryl, aryloxy or arylthio, which, in turn, can be substituted,R.sup.3 represents one or more identical or different radicals from amongst hydrogen, alkyl, alkoxy, alkylthio, halogenoalkyl, halogenoalkoxy, halogeno-alkylthio, alkylenedioxy, halogenoalkylenedioxy, halogen, CN, NO.sub.2, alkylcarbonyl, carbalkoxy, alkyl-sulphonyl, arylsulphonyl, sulphamoyl, alkyl-sulphamoyl, dialkylsulphamoyl, aryl, aryloxy or arylthio, which, in turn, can be substituted,X represents O or S, andY represents O or S,with the exception of the compounds 5-phenoxy-3-(3,4-dichlorophenyl)-1,3,4-oxadiazol-2(3H)-one and 5-phenoxy-3-(3-chloro-4-fluorophenyl)-1,3,4-oxadiazol-2-(3H)-one, characterized in that compounds of the formula (II) ##STR4## in which X, Y, R.sup.1, R.sup.2 and R.sup.3 have the abovementioned meaning, are reacted with carbonylation reagents such as phosgene, phosgene or triphosgene, and the compounds obtained in this process, of the formula III ##STR5## in which X, Y, R.sup.1, R.sup.2 and R.sup.3 have the abovementioned meaning, are cyclized in the presence of bases.
摘要:
The present invention relates to the use of thiadiazinones of the formula I ##STR1## in which R represents the radical of the formula ##STR2## wherein X.sup.1 represents O or S,R.sup.4 represents hydrogen or alkyl,R.sup.5 represents optionally substituted phenyl,R.sup.2 represents hydrogen, alkyl, cycloalkyl, aryl or aralkylfor combating endoparasites in veterinary medicine and to new thiadiazinones of the formula I and the preparation thereof.
摘要:
Described is a process for preparing diaryl ethers of the formula (I) Ar—O—Ar′ (I) In which Ar is an aryl or substituted aryl group and Ar′ is an aryl, substituted aryl, heteroaryl or substituted heteroaryl group, by reacting an aryl of formula (II) or a aryloxy salt of formula (III) Ar—OH (II) Ar—OR (III) In which Ar has the same meaning as in formula (I) and R is an alkali metal, with an aryl or heteroaryl bromide of formula (IV) Ar′—Br (IV) In which Ar′ has the same meaning as in formula (I), characterized in that the reaction is carried out in the presence of a copper(I)salt and a 1-substituted imidazole as catalyst system.
摘要:
A drive for a vehicle, especially a tracked vehicle or a vehicle with wheel-based steering, with at least one component which consumes electric energy and at least one power electronic component (power electronics) for providing the necessary electric energy, where the power electronics can be cooled with a fluid by the evaporative cooling process.
摘要:
Quinazoline-2,4-diones are obtained in high yields and purities by reacting anthranilic acids with isocyanates and then, without isolation of the urea formed as intermediate, treating the reaction mixture with acid.
摘要:
3-carbamoyl-4-hydroxy-couramins for combating parasitic helminths of the formula ##STR1## in which R.sup.1 represents hydrogen, halogen, alkyl, NO.sub.2, CN or alkoxy,X represents O, S, SO or SO.sub.2R.sup.2 represents alkyl, halogenoalkyl, phenyl, naphthyl or pyridyl, which can optionally be substituted; or the radical -X-R.sup.2, together with the radical R.sup.3 can also form an alkylenedioxy (-O-alk-O), halogenoalkylenedioxy, oxyalkyleneoxyalkylene (-O-Alk-O-Alk-) or oxyhalogenoalkylene-oxyhalogenoalkylene bridge; andR.sup.3 and R.sup.4 independently of one another represent hydrogen, halogen, CN, OH, NO.sub.2, amino, mono- or dialklylamino, alkyl, halogenoalkyl, aralkyl or aryl, which can optionally be substituted,can be used for combating parasitic helminths.