Abstract: Described is a process for the preparation of a N-[2-(2-pyridinyl)ethyl]carboxamide derivative of general formula (I) or a salt thereof.

Abstract: Described is a process for the preparation of a N-[2-(2-pyridinyl)ethyl]carboxamide derivative of general formula (I) or a salt thereof

Abstract: The invention relates to compositions based on thermoplastics, which contain polymeric phosphites.

Abstract: 2,3,4,5-tetrafluorobenzene derivatives can be obtained in a particularly advantageous manner by reacting the corresponding chlorobenzene or (chloro, fluoro)-benzene derivatives with a fluorinating agent in the presence of a solvent and a catalyst at elevated temperature, which comprises carrying out the reaction initially under temperature and pressure conditions such that the respective 2,3,4,5-tetrafluoro-benzene derivative continuously distills off through a column, and subsequently setting temperature and pressure conditions such that residual fractions of the 2,3,4,5-tetrafluorobenzene derivative distill off with the corresponding 2,3,4-trifluoro-5-chloro compound.

Abstract: The invention provides a process for preparing 4-aminodiphenylamine, an important starting product for synthesizing antioxidants and stabilizers in the rubber and polymer industry, by hydrogenating nitrosobenzene with hydrogen in the presence of a proton acid as catalyst and in the presence of a hydrogenating catalyst, optionally in the presence of an inert organic solvent and thermally decomposing the 4-ADPA ammonium salt produced in this way, wherein 4-ADPA is obtained. 4-aminodiphenylamine is produced in good yields and high purity by the process according to the present invention. Furthermore, no effluent is produced, which makes the process particularly economic and ecological.

Abstract: The invention provides a process for preparing 4-aminodiphenylamine, an important starting product for synthesizing antioxidants and stabilizers in the rubber and polymer industry, by hydrogenating nitrosobenzene with hydrogen in the presence of a proton acid as catalyst and in the presence of a hydrogenating catalyst, optionally in the presence of an inert organic solvent and thermally decomposing the 4-ADPA ammonium salt produced in this way, wherein 4-ADPA is obtained.

Abstract: The invention relates to new 3-thiocarbarnoylpyrazole derivatives of the formula (I) in which Ar represents in each case optionally substituted phenyl or pyridyl, R1 represents H2N—CS— and R2 and R3 are as defined in the description, to a plurality of processes for their preparation and to their use as pesticides.

Abstract: The invention relates to new 3-thiocarbamoylpyrazole derivatives of the formula (I) 1

Abstract: The invention relates to novel sulphonylaminocarbonyltriazolinones of the formula (I), ##STR1## in which R.sup.1 represents hydrogen, hydroxyl, amino, alkylideneamino or a respectively optionally substituted radical from the group consisting of alkyl, alkenyl, alkinyl, alkylamino, dialkylamino, alkanoylamino, cycloalkyl, cycloalkylalkyl, cycloalkylamino, aryl, arylalkyl,R.sup.2 represents respectively halogen-substituted alkyl or alkenyl andR.sup.3 represents a respectively optionally substituted radical from the group consisting of alkyl, aralkyl, aryl, heteroaryl,and to salts of compounds of the formula (I), to processes and novel intermediates for preparing the compounds (I) and to their use as herbicides and/or fungicides.

Abstract: The invention concerns novel dihydrofuran carboxamides of formula (I), ##STR1## in which R stands for groups of formulae (a), (b) or (c), ##STR2## in which R.sup.1, R.sup.2, R.sup.3, X, m, n and p have the meanings given in the description. The invention also concerns a process for preparing the novel substances, and their use for combating undesirable micro-organisms for plant- and material-protection purposes.

Abstract: The present invention relates to a process for preparing 4-cyano-2,5-difluoroaniline, which is an intermediate in the preparation of herbicides or liquid crystals.

Abstract: A novel process for the preparation of 2-chloro-benzimidazole derivatives of the formula ##STR1## in which A represents optionally halogenated alkylene having 1 or 2 carbon atoms,which process comprises reaction 1,3-dihydro-benzimidazol(ethi)ones of the formula ##STR2## in which X represents oxygen or sulphur,with phosphorus oxychloride.Novel 1,3-dihydro-benzimidazol(ethi)ones of the formula(II) and process for their preparation.

Abstract: The invention concerns 1,3-dimethyl-5-fluoro-pyrazole-4-carboxamides of formula (I) in which R stands for a group of formula(II) or (III), in which: R.sup.1 stands for alkyl, cycloalkyl, bicycloalkyl, optionally substituted aryl or optionally substituted aralkyl; m stands for integers from 0 to 3 or two vicinal R.sup.1 groups together stand for an alkylene chain with 3 or 4 carbon atoms; R.sup.2 stands for alkyl, cycloalkyl, bicycloalkyl, optionally substituted aryl or optionally substituted aralkyl; and n stands for integers from 0 to 3 or two vicinal R.sup.2 groups together stand for an alkylene chain with 3 or 4 carbon atoms. The invention further concerns a process for preparing the novel substances, and their use for combating undesirable micro-organisms for plant- and material-protection purposes.

Abstract: A novel process for the preparation of 2-chloro-benzimidazole derivatives of the formula in whichA represents optionally halogenated alkylene having 1 or 2 carbon atoms,which process comprises reacting 1,3-dihydro-benzimidazol(ethi)ones of the formula ##STR1## in which X represents oxygen or sulphur,with phosphorus oxychloride.Novel 1,3-dihydro-benzimidazol(ethi)ones of the formula (II) and processes for their preparation.

Abstract: The invention relates to novel sulphonylaminocarbonyltriazolinones of the formula (I), ##STR1## in which R.sup.1 represents hydrogen, hydroxyl, amino, alkylideneamino or a respectively optionally substituted radical from the group consisting of alkyl, alkenyl, alkinyl, alkylamino, dialkylamino, alkanoylamino, cycloalkyl, cycloalkylalkyl, cycloalkylamino, aryl, arylalkyl,R.sup.2 represents respectively halogen-substituted alkyl or alkenyl andR.sup.3 represents a respectively optionally substituted radical from the group consisting of alkyl, aralkyl, aryl, heteroaryl,and to salts of compounds of the formula (I), to processes and novel intermediates for preparing the compounds (I) and to their use as herbicides and/or fungicides.

Abstract: Avoiding hexachlorobutadiene as the starting material, 2-chloro- and 2,3-dichloro-1,1,1,4,4,4-hexafluoro-2-butene are prepared by reacting a chlorobutene derivative of the formula (I)Cl.sub.2 C.dbd.CH-X (I)in whichX represents CCl.dbd.CCl.sub.2 or CCl.sub.2 --CCl.sub.2 H with hydrogen fluoride and chlorine in the presence of a catalyst at temperatures in the range of 50 to 550.degree. C.

Abstract: 1,1,1,4,4,4-Hexafluorobutane (R 356) can be obtained in a simple manner and in excellent yields and with excellent selectivities when 1,1,1,4,4,4-hexafluorobutene is reacted in the liquid phase with hydrogen in the presence of a noble metal catalyst.

Abstract: Polyfluoroalkanes are used as propellants in sprayable compositions or in the the preparation of plastic foams and in the electrical industry as cleansing and degreasing agents.

Abstract: Polyfluoroalkanes are used as propellants in sprayable compositions or in the preparation of plastic foams and in the electrical industry as cleansing and degreasing agents.

Abstract: 1,1,1,4,4,4-hexafluorobutane is obtained from a trifluoroethane compound, by reacting this with hydrogen in the gas phase and without a diluent on a palladium- and/or nickel-containing supported catalyst and subsequently hydrogenating the reaction product.