Basf Aktiengesellschaft

Basf Se Corporation

Rainer Noack

Uwe Josef Vogelbacher

Peter Erk

Gerhard Cox

Hans Ziegler

Karl-Heinrich Schneider

Matthias Rauls

Winfried Mayer

Clemens Palm

Roland Goetz

Michael Henningsen

Gunter Lipowsky

Thomas Kröhl

Carsten Groening

Thomas Kroehl

Roland Götz

Michael Sander

Lothar Rüb

Carsten Gröning

Joerg Wuckelt

Jörg Wuckelt

Roland GÖTZ

The present invention relates to a method for producing 1-hydroxymethyl-1,2-diphenyloxiranes from 2,3-diphenylpropenals by means of epoxidation and reduction. The formation of objectionable by-products can be suppressed in that the reduction is started before the 2,3-5 diphenylpropenal is completely converted. The hydroxymethyl diphenyloxiranes represent valuable intermediate products for producing 1-azolylmethyl-1,2-diphenyloxiranes, wherein the latter can be easily produced from said intermediate products by introducing the azolyl group.

Method for producing hydroxymethyl diphenyloxiranes and corresponding 1-azolylmethyl-1,2-diphenyloxiranes

The present invention relates to novel crystalline modifications of pyraclostrobin, to processes for their preparation and to the use of the novel modifications for preparing crop protection compositions.

Crystalline modifications of pyraclostrobin

Crystalline modifications to pyraclostrobin

The present invention relates to a process for the preparation of 1,2,4-triazol-1-ylmethyloxiranes of the formula I in which A and B are identical or different and, independently of one another, are C-C-alkyl, phenyl-C-C-alkyl, C-C-cycloalkyl, C-C-cycloalkenyl, tetrahydropyranyl, tetrahydrofuranyl, dioxanyl or phenyl, where the phenyl radical can carry one to three substituents chosen from the group: halogen, nitro, C-C-alkyl, C-C-alkyloxy, phenoxy, amino, C-C-haloalkyl or phenylsulfonyl, which comprises reacting  

Preparation for the production of 1,2,4-triazolylmethyl-oxiranes

The invention relates to a method for producing 2,3-cis-substituted 2-aryl propenals by condensing a 2-aryl acetaldehyde I with a non-enolizable aldehyde compound II in the presence of a base. The inventive method is characterized in that the reaction is carried out in a solvent mixture comprising at least one water-miscible organic solvent and water at a volume ratio V:Vranging between 10:1 and 0.5:1.

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Groβthiemig, Germany

Rainer Noack