Saltigo Gmbh

Lanxess Deutschland Gmbh

Andreas Job

Helmut Keul

Martin Möller

Bernd Griehsel

Johannes Scherer

Ralf Krahwinkel

Nikolaus Müller

Burkhard Koch

Antje Hieronymi

Denys Baskakov

Nikolaus Mueller

Nicolas Pasquier

Aleksandra Mendrek

Yingchun He

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.

Synergistically active mixtures of &#x3b1;,&#x3c9;-amino alcohol enantiomers, preparation thereof and use thereof in insect- and mite-repellent formulations

What is described is a process for preparing compounds of the general formula (I) in which R, Rand Rindependently of one another represent hydrogen, an alkyl group or an aryl group, wherein compounds of the general formula (II) in which Rand Rhave the meaning given for formula (I),are reacted with an alkylating agent of the general formula (III)RX&#x2003;&#x2003;(III),in which X represents a halogen atom and Rhas the meaning given for formula (I), if appropriate in a solvent.

Process for preparing quaternary salts of piperidyl esters of mandelic acid

The present invention relates to an improved process for preparing N,N'-carbonyldiazoles by reacting azoles with phosgene.

Method for the production of N,N-carbonyldiazoles

The invention relates to a novel process for preparing phthaloyl chloride (benzene-1,2-dicarbonyl chloride) by reacting phthalic anhydride with phosgene in the presence of a specific N,N-disubstituted formamide as a catalyst.

Process for preparing phthaloyl chloride

A process is provided for preparing N,N'-carbonyldiazoles by reacting azoles with phosgene in halogenated aliphatic hydrocarbon solvents, the entirety of the azole for reaction being introduced in the solvent, followed by the addition of phosgene.

Process for preparing N,N'-carbonyldiazoles

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Kö'ln, Germany

Andreas Job