Bayer Aktiengesellschaft

Miles Inc.

Bayer Aktiengeselleschaft

Gunther Beck

Helmut Heitzer

Robert R Schmidt

Ludwig Eue

Klaus Sasse

Wilhelm Brandes

Klaus Lurssen

Bernd Baasner

Fritz Doring

Hans-Joachim Santel

Reiner Fischer

Wilfried Paulus

Hans Holtschmidt

Stefan Dutzmann

Florin Seng

Gerhard Dankert

Ulrike Wachendorff-Neumann

Christoph Erdelen

Ingeborg Hammann

Thomas Bretschneider

Wolfram Andersch

Erich Klauke

Kurt Findeisen

Andreas Turberg

Norbert Mencke

Hermann Hagemann

Hans Scheinpflug

Heinz Forster

Ernst Kysela

Michael Schwamborn

Bernd Kaletta

Wilheim Brandes

Albrecht Marhold

Paul Reinecke

Klaus Konig

Dieter Arlt

Joachim Kluth

Klaus-Helmut Muller

Thomas Himmler

Roland Andree

Klaus Jelich

Hans-Joachim Diehr

Klaus Schaller

Hermann Henk

Peter Babczinski

Dietmar Kuhnt

Hans-Georg Schmitt

Friedrich W Krock

Michael Haug

Klaus Wehling

Birgit Krauskopf

Karl-Heinz Schundehutte

Hauke Furstenwerth

Eberhard Kuckert

Antonius Lobberding

Jurgen Kocher

Klaus Scaller

Wolfgang Von Der Emden

Rudiger Schubert

The present invention relates to new 3-aryl-4-hydroxy-.DELTA..sup.3 -dihydrofuranone derivatives of the formula (I) ##STR1## in which A and B together with the carbon atom to which they are bonded form an unsubstituted or substituted 5- to 7-membered ring which is interrupted by at least one hetero atom,

3-aryl-tetronic acid derivatives

3-aryl-tetronic acid derivatives, the production thereof and the use

The reaction of cyanoolefins, aminocarbonylolefins or hydroxyiminoolefins with a Vilsmeier reagent leads to 2-halogenopyridines which bear aldehyde groups in the 3 and/or 5 position. These pyridinealdehydes are valuable intermediates for the preparation of pharmaceuticals and crop protection agents.

Process for the preparation of 2-halogenopyridinealdehydes and novel

The present invention relates to novel N-phenylacetamino nitriles of the general formula (I), ##STR1## in which R.sup.1 represents hydrogen, or represents alkyl, alkenyl, cycloalkyl, aryl or heterocyclyl which are in each case optionally substituted, and R.sup.2 represents hydrogen, or represents alkyl which is optionally substituted, or R.sup.1 and R.sup.2, together with the carbon atom to which they are bonded, represent cycloalkyl or heterocyclyl which are in each case optionally substituted, R.sup.3 represents halogen, alkyl or alkoxy, R.sup.4 represents hydrogen, halogen, alkyl, halogenoalkyl or alkoxy, R.sup.5 represents halogen, alkyl or alkoxy, and m represents a number 0, 1, 2 or 3, processes for their preparation and their use for the preparation of agents for controlling pests.

N-phenylacetamino nitriles

The present invention relates to novel N-phenylacetamino nitriles of the general formula (I), ##STR1## in which R.sup.1 represents hydrogen, or represents alkyl, alkenyl, cycloalkyl, aryl or heterocyclyl which are in each case optionally substituted, and

N-phenylacetamino nitriles intermediates and process for making pyrroline-2

1,2,3-Tricyanobenzene can be prepared in a good yield from fluorobenzonitriles by reaction with an alkali metal cyanide. This product can be converted into metal-free tetracyanophthalocyanines or into the corresponding metal complexes by tetramerisation, if appropriate in the presence of metals or metal compounds. These products are excellent organic pigments.

Process for the preparation of 1,2,3-tricyanobenzene, phthalocyanines

Metal-free phthalocyanines in the .chi.-modification substituted in up to four ortho positions can be prepared by tetramerisation of a reaction mixture consisting of phthalonitriles substituted in the 3-position with phthalonitrile in a molar ratio of 4:0 to 1:40 in the presence of a base and subsequent heat treatment at temperatures of between 100.degree. and 300.degree. C. They constitute excellent organic pigments.

Metal-free, substituted phthalocyanines in the .chi.-modification

2-Thiazolyl tetrazolium salt compounds characterized by a reflectance spectrum exhibiting an extended plateau above about 600-650 nm. Such compounds are useful as chromogenic indicators for reducing substances such as NADH. The reflectance plateau confers improved accuracy to analytical assays, particularly for the determination of analytes of medical diagnostic significance, in which a colorimetric response on a reagent carrier matrix is measured by reflectance.

Substituted 2-thiazolyl tetrazolium salt indicators

Coumarin deviatives of the formula ##STR1## in which R.sup.1 denotes cyano,

Coumarin derivatives, process for their preparation, their use and

The invention relates to new substituted 4,5-diamino-1,2,4-triazol-3-(thi)ones of the general formula (I), ##STR1## in which R.sup.1 represents alkyl, alkenyl, alkinyl, halogenoalkyl, halogenoalkenyl, halogenoalkinyl, cyanoalkyl, hydroxyalkyl, alkoxyalkyl, aryloxyalkyl, arylthioalkyl, arylsulfinylalkyl, arylsulfonylalkyl, arylaminoalkyl, N-alkyl-arylaminoalkyl, alkoxycarbonylalkyl, alkoxycarbonylalkenyl, alkylaminoalkyl, dialkylaminoalkyl, in each case optionally substituted cycloalkyl, cycloalkylalkyl, cycloalkenyl or cycloalkenylalkyl, or optionally substituted heterocyclylalkyl, or in each case optionally substituted aralkyl, arylalkenyl, arylalkinyl, aroyl, aryl, aralkyloxy or aryloxy, for alkoxy, alkenyloxy or alkinyloxy,

Substituted 4,5-diamino-1,2,4-triazol-3-(thi)ones

1-Trifluoromethyl-1-nitro-2-alkoxy-2-aryl-ethanes of the formula ##STR1## in which R.sup.1 represents a straight-chain or branched alkyl radical and

1-trifluoromethyl-1-nitro-2-alkoxy-2-aryl-ethanes, their preparation and

A method of combating unwanted vegetation which comprises applying to such vegetation or to a locus from which it is desired to exclude such vegetation, a herbicidally effective amount of a 2-iminopyridine of the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently of one another represent hydrogen, halogen, alkyl, halogenoalkyl, alkoxy, halogenoalkoxy, alkylthio or halogenalkylthio,

Herbicidal 2-iminopyridines

The invention relates to new fluoromethylated polycyanobenzenes of the formula ##STR1## in which X represents hydrogen, fluorine or chlorine,

Fluoromethylated polycyanobenzenes, their alkali metal cyanide adducts,

The invention relates to new polycyanopyrimidines of the formula ##STR1## in which R represents chlorine or cyano, and to a process for their preparation.

Polycyanopyrimidines and process for their preparation

A process for the preparation of 2,4,6-tricyano-1,3,5-triazine, comprising reacting a 2,4,6-trihalogeno-1,3,5-triazine of the formula ##STR1## in which Hal.sub.1 and Hal.sub.2 independently of one another represent chlorine or fluorine, with an alkali metal cyanide or an alkaline earth metal cyanide.

Preparation of 2,4,6-tricyano-1,3,5-triazine

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Leverkusen, Germany

Gunther Beck