Basf Aktiengesellschaft

Adrian Steinmetz

Jochem Henkelmann

Roland G&ouml;tz

Michael Rack

Michael Keil

Bernd Wolf

Norbert G&ouml;tz

Volker Maywald

Armin Stamm

Heike Becker

Juan Jose Aiscar Bayeto

Hubert Sauter

Thomas Grote

Andreas Gypser

Horst Mayer

Norbert Götz

Lutz F Tietze

Roland Götz

The invention relates to a method for producing o-chloromethyl benzoic acid chlorides of formula (I), in which Rto Rcan be the same or different and represent hydrogen C&#x2013;Calkyl, halogen or trifluoromethyl, by reaction benzo condensed lactones of formula (II), in which Rto Rhave the above-mentioned meaning, with thionyl chloride. The inventive method is characterized in that the reaction is carried out in the presence of catalytic quantities of a Lewis acid and in the presence of catalytic quantities of a phosphine derivative.

Method for producing o-chloromethyl benzoic acid chlorides

The invention relates to cycloalkyl derivatives, a process for their preparation and their use.

Cycloalkyl derivatives and the solid-phase synthesis of such derivatives

The present invention relates to a method for the production of trion-bis(oxime ether) derivatives of formula (I), wherein the substituents have the following meaning: R , R represent unsubstituted, partially or totally halogenated C -C -alkyl or C -C -cycloalkyl; R , R represent C -C -alkyl or a methyl substituted by C -C -alkenyl, C -C -alkinyl or phenyl and X represents oxygen or N&mdash;OH. The invention also relates to the intermediate products obtained with said method.

Method for preparing trion-bis(oxime ether) derivatives andrion-mono and trion-bis(oxime ether) derivatives obtained therewith

Method for producing 1-substituted 5-Hydroxypyrazoles

The invention relates to a method for the production of 1-substituted 5-hydroxypyrazoles of formula (I) wherein R,is C,-C,-alkyl, C,-C,-alkenyl, C,-C,-alkinyl, C,-C,-cycloalkyl or C,-C,-alkoxy, whereby these groups can be substituted by halogen, C,-C,-alkoxy, phenoxy, C,-C,-alkoxycarbonyl, C,-C,-alkylthiocarbonyl or a cyclic ring system with 3-14 ring atoms, by reacting a) an alkylvinylether of general formula (III) wherein R,is C,-C,-alkyl or C,-C,-cycloalkyl, with phosgene (IVa), &ldquo;diphosgene&rdquo; (IVb) or &ldquo;triphosgene&rdquo; (IVc) to form acid chlorides of formula (V), b) transforming said acid chlorides by eliminating hydrogen chloride into the corresponding 3-alkoxyacrylic acid chloride of formula (VI) and c) reacting said acid chloride with hydrazines of formula (VII) wherein R,has the above cited meaning, to form 5-hydroxypyrazoles of formula (I).

Method for the production of 1-substituted 5-hydroxypyrazoles

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Mannheim, Germany

Adrian Steinmetz