Abstract: The present invention relates to a process for preparing alkylpyridine N-oxides of formula (I) from the corresponding unsubstituted 3-alkylpyridines or the 5-alkylpyridines correspondingly substituted in the 2 position of formula (II) in the presence of at least oxidizing agent, water, organic solvent and catalyst.

Abstract: The invention relates to an improved process for preparing bromochloromethane by reacting dichloromethane and dibromomethane in the presence of catalysts.

Abstract: The invention relates to an improved process for producing mixtures comprising sec-butyl 2-(2-hydroxyethyl)piperidinylcarbamate from a crude product by thermal treatment with short residence times, apparatuses for this process, the use of such apparatuses for such processes, and the mixtures of the invention obtainable from the process.

Abstract: The present invention relates to a method for preparing 2-alkoxy-4-amino-5-methylpyridines of the formula (I) and/or 2-alkoxy-4-alkylamino-5-methylpyridines of the formula (II) from the corresponding 2-haloaminopyridines and the appropriate alcohols in the presence of base, and to the compounds resulting therefrom.

Abstract: The invention relates to mixtures of propoxylated 4-toluidines containing two or more different di- or tri-propoxy lated or higher propoxylated p-toluidines in specific weight ratios, to methods for preparing them and to their use as polymerization accelerators or vulcanization accelerators or as hardener components in epoxy resins.

Abstract: The invention relates to an improved process for preparing unsymmetrical dialkyl sulfides by reacting a monoalkyl sulfide with at least one alkyl halide in the presence of base.

Abstract: The invention relates to an improved process for preparing bromochloromethane by reacting dichloromethane and dibromomethane in the presence of catalysts.

Abstract: The invention relates to an improved process for preparing cyclopropyl compounds from alkenes through reaction of the alkene in the presence of bromochloromethane, elemental zinc, and elemental copper or copper compounds (cyclopropanation reaction).

Abstract: The invention relates to an improved process for preparing epoxides from aldehydes or ketones by reacting a ketone or aldehyde with at least one sulfonium salt, and to sulfonium salts that may be used in the process of the invention.

Abstract: The present invention relates to a method for preparing 2-alkoxy-4-amino-5-methylpyridines of the formula (I) and/or 2-alkoxy-4-alkylamino-5-methylpyridines of the formula (II) from the corresponding 2-haloaminopyridines and the appropriate alcohols in the presence of base, and to the compounds resulting therefrom.

Abstract: The present invention relates to a process for preparing 2-haloacrylic esters from 2-hydroxymethyl- or 2-halomethyl- or 2-chlorosulfinyloxymethyl-2-halomalonic diesters. The invention further provides novel 2-halomethyl-2-halomalonic diesters or 2-chlorosulfinyloxymethyl-2-halomalonic diesters which can be used for preparation of the 2-haloacrylic esters.

Abstract: The present invention relates to a process for preparing 2-haloacrylic esters from 2-hydroxymethyl- or 2-halomethyl- or 2-chlorosulfinyloxymethyl-2-halomalonic diesters. The invention further provides novel 2-halomethyl-2-halomalonic diesters or 2-chlorosulfinyloxymethyl-2-halomalonic diesters which can be used for preparation of the 2-haloacrylic esters.

Abstract: A process is provided which allows the synthesis of a large number of styrene derivatives with formation of C—C bonds, with use being possible of economically advantageous substrates, readily available carbon nucleophiles, and both inexpensive and environmentally unproblematic catalyst systems, permitting reaction under mild conditions and a high compatibility with functional groups on the reactants involved.

Abstract: The present invention relates to a process for the preparation of substituted 2-fluoroacrylic acid derivatives.

Abstract: The invention provides an improved method for the production of terminal group-capped polyethers using homogeneous catalysis in the presence of Brönstedt acids.

Abstract: What are described are insect- and mite-repellent compositions comprising at least 2 enantiomers selected from the group of 1-[(S)-sec-butyloxycarbonyl]-2-(S)-(2-hydroxyethyl)piperidine (referred to hereinafter as S,S), 1-[(R)-sec-butyloxycarbonyl]-2-(R)-(+)-(2-hydroxyethyl)piperidine (referred to hereinafter as R,R), 1-[(S)-sec-butoxycarbonyl]-2-(R)-(+)-(2-hydroxyethyl)piperidine (referred to hereinafter as S,R), 1-[(R)-sec-butyloxycarbonyl]-2-(S)-(+)-(2-hydroxyethyl)piperidine (referred to hereinafter as R,S), excluding the racemate mixture thereof, a process for preparation thereof and the use thereof in insect- and mite-repellent formulations.

Abstract: A process for preparing azomethines of the general formula (V) where R is an optionally substituted carbocyclic aromatic radical having 6 to 24 carbon atoms or an optionally substituted alkyl radical or an optionally substituted heteroaromatic radical having 5 to 24 carbon atoms, and R1 is an optionally substituted carbocyclic aromatic radical having 6 to 24 carbon atoms or an optionally substituted heteroaromatic radical having 5 to 24 carbon atoms, R2 is hydrogen or an optionally substituted carbocyclic aromatic radical having 6 to 24 carbon atoms or an optionally substituted alkyl radical or an optionally substituted cycloalkyl radical N or an optionally substituted heteroaromatic radical having 5 to 24 carbon atoms by reacting alpha-oxo carboxylates of the general formula (I) where n is a number in the range from 1 to 6, M(n+) is a cation, with aryl bromides of the general formula (IV) and amines of the general formula (II) via the alpha-iminocarboxylate intermediate of the general formula (III), in the p

Abstract: The present invention relates to a method for preparing (S)-3-N-methylamino-1-(2-thienyl)-1-propanol and salts thereof.

Abstract: The present invention relates to a process for the preparation of optionally substituted (N-heterocyclyl) aryl ethers.

Abstract: The present invention relates to the industrial production of vinylene carbonate (VC) by elimination of hydrogen chloride from chloroethylene glycol carbonate (CGC) with tertiary amines in the absence of relatively large amounts of additional solvent.