Ciba-geigy Corporation

Syngenta Crop Protection, Inc.

Syngenta Corporation

Novartis Crop Protection, Inc.

Ciba-geigy Ag

Sungenta Limited

Syngenta Participations Ag

Gottfried Seifert

Thomas Rapold

Martin Zeller

Marcel Senn

Fanny Giordano

Thomas Pitterna

Peter Maienfisch

Josef Ehrenfreund

Harald Walter

Henry Szczepanski

Hans Tobler

Anthony Cornelius O'Sullivan

Camilla Corsi

Neil George

Ian Kevin Jones

Shailesh Shah

Peter Baumeister

Eric Plattner

Ottmar Franz H&uuml;ter

Sebastian Staubli

Heinz Steiner

Thomas G&ouml;bel

Paul Edward Bonnett

Martin Charles Bowden

Beat Jau

Richard B Lund

Tibor Somlo

Christos Comninellis

Robert Hassig

Dominik Faber

Andrea Rolf Sting

Willy Regenass

Ottmar Franz Huter

Thomas Gobel

Juerg Wiss

Henri Dietrich

Verena Gisin

Thomas Aitcheson Clark

Josef H Wieland

Hans-Dieter Schneider

Martin Buerli

John G Lee

Jorg Kallen

Robert U Osterwalder

Paul Bonnett

Bernhard Urwyler

Fanny Delphine Brigtte Giordano

Shailesh C Shah

The present invention relates to a process for the preparation of compounds of formula I wherein Rand Rare each independently of the other hydrogen or C-Calkyl and Ris CFor CFH, by wherein Rand Rare as defined for formula I, with at least one reducing agent to form a compound of formula III wherein Rand Rare as defined for formula I, and wherein Rand Rare as defined for formula I, and wherein Q is chlorine, fluorine, bromine, iodine, hydroxy or C-Calkoxy and Ris as defined for formula I, to form the compound of formula I;and to novel intermediates for use in that process.

Process for the production of amides

A process for the preparation of a compound of formula (I), the process comprising: (i) the reaction of a compound of formula (III), with a compound of formula (IV) to give a compound of formula (II), and (ii) the reaction of the compound of formula (II) with a leaving group, to give the compound of formula (I).

Process for the synthesis of mandipropamid and derivatives thereof

The present invention relates to a process for the preparation of compounds of formula (I) wherein Rand Rare each independently of the other hydrogen or C-Calkyl and Ris CFor CFH, by a) reaction of a compound of formula (II) wherein Rand Rare as defined for formula (I), with at least one reducing agent to form a compound of formula (III) wherein Rand Rare as defined for formula (I), and b) reaction of that compound with at least one reducing agent to form a compound of formula (IV) wherein Rand Rare as defined for formula (I), and (c) reaction of that compound with a compound of formula (V) wherein Q is chlorine, fluorine, bromine, iodine, hydroxy or C-Calkoxy and Ris as defined for formula (I), to form the compound of formula (I); and to novel intermediates for use in that process. 

A process for the preparation of a compound of the formulain which Q is CH or N; Y is NOor CN; Z is CHRO, NRor S;

Process for the manufacture of thiazole derivatives with pesticidal activity

Method of producing nitroguanidine- and nitroenamine derivatives

Process for the preparation of thiazole derivatives

Process for the preparation of aniline compounds

(R)(&plus;)-2-&lsqb;4-(5-chloro 3-fluoropyridin-2-yloxy)-phenoxy&rsqb;-propionic acid propinyl ester is produced by converting a compound of formula II

Process for preparation of propionic acid derivatives

A process for the preparation of substituted benzenes or benzenesulfonic acid and its derivatives comprising diazotisation of an aminobenzene or ortho-amino-benzenesulfonic acid derivative followed by homogeneous palladium-catalyzed coupling with an olefine and heterogeneous palladium-catalyzed hydrogenation of the olefinic substituent, wherein the homogeneous catalyst is reduced and precipitated as metal after the coupling in the reaction mixture and used as a heterogeneous palladium catalyst for the hydrogenation step. The process is particular suitable for the preparation N-benzenesulfon-N'-triazinyl-urea herbicides.

Process for the preparation of substituted benzenes and benzene sulfonic

A process for the preparation of substituted benzenes or benzenesulfonic acid and its derivatives comprising diazotisation of an aminobenzene or ortho-amino-benzenesulfonic acid derivative followed by homogeneous palladium-catalysed coupling with an olefine and heterogeneous palladium-catalysed hydrogenation of the olefinic substituent, wherein the homogeneous catalyst is reduced and precipitated as metal after the coupling in the reaction mixture and used as a heterogeneous palladium catalyst for the hydrogenation step. The process is particular suitable for the preparation N-benzenesulfon-N'-triazinyl-urea herbicides.

Process for the preparation of N,N'-substituted ureas

A process for the preparation of 4-nitrotoluene-2-sulfonic acid by sulfonating 4-nitrotoluene with oleum or liquid SO.sub.3 is described. The sulfonation is carried out continuously with oleum of at least 50% concentration or liquid 100% SO.sub.3 while keeping the conversion of 4-nitro-toluene in the reaction mixture at .gtoreq.90% during the entire reaction course. The process is inherently non-polluting, and provides the product in high yield and low sulfuric acid content in a form usable for 4,4'-dinitrostilbene-2,2'-disulfonic acid production without further purification.

Process for the production of 4-nitrotoluene-2-sulfonic acid

4,6-Bis(difluoromethoxy)pyrimidines of formula I ##STR1## wherein R is C.sub.1 -C.sub.4 alkyl or unsubstituted or substituted phenyl or benzyl, are prepared by reacting a 4,6-dihydroxypyrimidine dialkali metal salt of formula II ##STR2## wherein R is as defined for formula I and Me is an alkali metal, with chlorodifluoromethane in a solvent selected from the group consisting of ketones and alkyl cyanides, in the presence of 0.05 to 1.1 mol of water per mol of dialkali metal salt of formula II.

Process for the preparation of pyrimidine derivatives

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Muenchwilen, Switzerland

Gottfried Seifert