Bayer Cropscience Ag

Bayer Intellectual Property Gmbh

Bayer Cropscience Gmbh

Thomas Norbert Müller

Otto Schallner

Norbert Lui

Peter Jeschke

Olga Malsam

Ulrich Görgens

Thomas Schenke

Christian Arnold

Robert Velten

Erich Sanwald

Ralf Nauen

Michael Edmund Beck

Thomas Himmler

Rolf Pontzen

Christian Funke

Wahed Ahmed Moradi

Udo Reckmann

Jens-Dietmar Heinrich

Frank Volz

Günter Schlegel

Leonardo Pitta

Sascha Von Morgenstern

Sandra Lehmann

Sergii Pazenok

Mark James Ford

Hansjörg Dietrich

Albert Schnatterer

Lars Rodefeld

Antonio Magriz Tascón

Mathias Riedrich

Stefan Moczarski

José Maria Lassaletta Simon

Abel Ros Laó

The present invention relates to a novel catalytic hydrogenation of substituted 2-methyl cyanopyridyl derivatives, in particular 3-chloro-5-(trifluoromethyl)pyridin-2-yl]acetonitrile [=Py-CN] to substituted 2-ethylaminopyridine derivatives, in particular 2-[3-chloro-5-(trifluoromethyl)pyridin-2-yl]ethanamine [=Py-ethanamine] or salts thereof in the presence of metal catalysts, in particular palladium catalysts.

Catalytic hydrogenation of nitriles

The present invention relates to a process for preparing N-(5-chloro-2-isopropylbenzyl)cyclopropanamine by hydrogenation of N-[(5-chloro-2-isopropylphenyl)methylene]cyclopropanamine over specific platinum catalysts.

Process for preparing N-(5-chloro-2-isopropylbenzyl)cyclopropanamine

The present invention relates to a process for preparing 2-amino-5-cyano-N,3-dimethylbenzamide of formula (I) by reacting 2-amino-5-cyano-3-methylbenzoic esters or diesters with methylamine.

Method for the production of 2-amino-5-cyano-N,3-dimethylbenzamide

Process for preparing 2,2-difluoroethanol, comprising the following steps: reacting 1-chloro-2,2-difluoroethane with an alkali metal salt of formic acid or acetic acid in a suitable solvent to give the corresponding 2,2-difluoroethyl formate or 2,2-difluoroethyl acetate, and transesterifying the 2,2-difluoroethyl formate or 2,2-difluoroethyl acetate from step (i) in the presence of an alcohol and optionally of a base.

Process for preparing 2,2-difluoroethanol

A process for the preparation of 2,2-difluoroethylamine of the formula (I)CHFCHNH&#x2003;&#x2003;(I)comprising the stages (i) and (ii):stage (i): reaction of 2,2-difluoro-1-haloethane of the formula (II)CHF&#x2014;CHHal&#x2003;&#x2003;(II)in which Hal is chlorine, bromine or iodine,with prop-2-en-1-amine of the formula (III) to give N-(2,2-difluoroethyl)prop-2-en-1-amine of the formula (IV) preferably in the presence of an acid scavenger,andstage (ii): removal of the allyl group from the N-(2,2-difluoroethyl)prop-2-en-1-amine of the formula (IV) obtained in stage (i) to give 2,2-difluoroethylamine of the formula (I) or a salt thereof.

Process for the preparation of 2,2-difluoroethylamine starting from prop-2-en-1-amine

Process for the preparation of 2,2-difluoroethylamine of the formula (I)CHFCHNH&#x2003;&#x2003;(I)comprising the stages (i) and (ii): 

Process for the preparation of 2,2-difluoroethylamine starting from a benzylamine compound

The present invention relates to novel substituted enaminocarbonyl compounds, to processes for their preparation and to their use for controlling animal pests, especially arthropods, in particular insects.

Substituted enaminocarbonyl compounds

Optically active cyclic amines of the formula (I) or salts thereof in which A, R, R are each as defined in claim, and Rand A, or R and A, or Rand R may also form rings,where R and the NH&#x2014;Rgroup on the two ring carbon atoms marked with an asterisk (*) in each case are arranged in cis arrangement to one another and the stereochemical configuration on these carbon atoms is different from the racemic configuration, can be prepared effectively by a process, which comprises converting an imine (a racemic imine) of the formula (II) 

Process for preparing optically active cyclic amines

The present application relates to novel substituted enaminocarbonyl compounds, to processes for their preparation and to their use for controlling animal pests, especially arthropods, in particular insects.

Substituted enaminocarbonyl compounds used as insecticides

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Monheim, Germany

Thomas Norbert Müller