Hoechst Aktiengesellschaft

Hoechst Schering Agrevo Gmbh

Hilmar Mildenberger

Hermann Bieringer

Klaus Bauer

Reinhard Handte

Helmut Burstell

Roland Schmierer

Burkhard Sachse

Lothar Willms

Erich Sohn

Stephen Lachhein

Rainer Liebl

Harald Knorr

Peter Hartz

Werner Knauf

Anna Waltersdorfer

Thomas Maier

Gunter Schlegel

Manfred Koch

Heribert Tetzlaff

Heinz Ehrhardt

Wolfgang Welter

Heinz Kehne

Reinhard Kirsch

Werner Bonin

Stefan Schnatterer

Siegbert Rittner

Yoshio Katsuda

Arno Schulz

Peter Braun

Dieter Gunther

Dieter Duwel

Gerhard Lohaus

Hans J Nestler

Herbert Stark

Hans-Joachim Zeiss, I

Gerhard Stahler

Helmut Korbanka

Ludwig Emmel

Hans-Herbert Schubert

Karl Matterstock

Rainer Schaller

Michael Frey

Ulrich Hertenstein

Heinz Boesenberg

Gunter Karl Dransch, Deceased

By Annelise Wiesenhutter, Heiress

Hans-Joachim Ressel

Thomas Huttelmaier

Helmut Bustell

Johanna Mathilde Flersheim, Heiress

Hans-Gerd Gerber

Horst Gildemeister

Klaus Baur

The present invention relates to agents for protecting crop plants from the phytotoxic side effects of herbicides, which agents contain a compound of the formula I ##STR1## wherein Y denotes C--H or N, the symbols R.sub.1 independently of one another denote alkyl, halo-alkyl, alkoxy, haloalkoxy or halogen, R.sub.2 denotes alkyl or cycloalkyl, X denotes COOR.sub.3, CON(R.sub.4).sub.2, COSR.sub.3, CN or ##STR2## R.sub.3 denotes an alkali metal or alkaline earth metal, hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, or phenylalkyl, it being possible for phenyl to be substituted by halogen, or trialkylsilylalkyl or alkoxyalkyl, the symbols R.sub.4 independently of one another denote H, alkyl or cycloalkyl, which can be substituted, or 2 radicals R.sub.4 together with the N atom linking them form a 4- to 7-membered heterocyclic ring and n denotes 1 to 3, in combination with a herbicide.

Plant protection agents based on pyrazolecarboxylic acid derivatives

Use of benzoylureas for controlling house dust mites

The present invention relates to agents for protecting crop plants from the phytotoxic side effects of herbicides, which agents contain a compound of the formula ##STR1## wherein Y denotes C--H or N,

A compound of formula I or salt thereof can be prepared in a process which comprises reacting a compound of formula II with a compound of formula III: ##STR1## wherein the formulae I-III the radical X is O, ONR.sup.2 or SO.sub.2 NR.sup.2 ; Y is N or CH;

Process for the preparation of sulfonylureas

2-Aminopyrimidines of the formula I ##STR1## in which X and Y are O or S and R.sup.1 and R.sup.2 independently of one another are lower alkyl, alkoxyalkyl or haloalkyl, are obtained by reacting propanediimidates of the formula II

Process for the preparation of aminopyrimidines

A large number of customary processes for separating amino acids fails when very polar hydrophilic amino acids with isoelectric points (IEP) which are close to one another are to be fractionated. Mixtures of L-glutamic acid (IEP=3.24) and L-phosphinothricin (IEP=2.6) produced by enzymatic transaminations of the corresponding .alpha.-keto acid have been difficult to separate to date. The invention relates to a process for separating L-phosphinothricin and L-glutamic acid, which comprises carrying out the separation as liquid/liquid extraction with two non-miscible aqueous phases as phase system, where the phase former contained in the phase system is a combination of at least two different water-soluble polymers or of at least one water-soluble salt and one water-soluble polymer, and the extraction is carried out by multistage countercurrent partition on the van Dijck principle.

Process for the extractive separation of L-phosphinothricin and

Process for the preparation of compounds of the formula ##STR1## where R is (C.sub.1 -C.sub.4)alkyl, which comprises reacting a compound of the formula II ##STR2## with an alcoholate of the formula III

Process for the preparation of alkyl methyl-3-carbalkoxyethylphosphinates

Compounds of the formula I ##STR1## in which R denotes halogen, hydroxyl, cyano, nitro, (substituted) alkyl, (substituted) alkoxy, (halo)alkylthio, carboxyl, alkoxycarbonyl; (halo)alkylsulf(inyl) (onyl) or -(onyloxy); (halo)phenyl or (halo)phenoxy; X in the 3- or 5-position denotes a (thio)carboxylic acid--or an optionally heterocyclic radical which is derived therefrom; Y denotes halogen, m denotes the number 0 or 1, and n denotes a number from 0 to 5, have valuable plant growth-regulating properties and are suitable, in addition, as safeners for protecting crop plants against phytotoxic side effects of herbicides.

Phenylpyrazolecarboxylic acid derivative preparation

The invention relates to a gentle process for the separation of enol ethers from mixtures containing water-soluble alcohols by extraction, wherein an aqueous solution of a base is used as the extraction agent in a phase ratio of the amounts of the aqueous phase: enol ether/alcohol mixture of at least 0.5:1 and the extraction is carried out in several stages or continuously with a theoretical number of stages of at least two. The process is particularly suitable for separating off enol ethers which readily decompose during distillation.

Process for separating off enol ethers from reaction mixtures containing

Process for the preparation of D(+)-2-(4-acetylphenoxy)-propionic esters Preparation of D(+)-2-(4-acetylphenoxy)-propionic esters of the formula ##STR1## by reacting 4-hydroxyacetophenone with L-halo- or sulfonyloxy-lactic esters in a basic medium at temperatures .ltoreq.50.degree. C.

Process for the preparation of D(+)-2-(4-acetylphenoxy)-propionic esters

Compounds of the formula ##STR1## in which R.sub.n denotes hydrogen, halogen or alkyl, Z denotes oxygen or sulfur, R.sup.1 and R.sup.2, independently of one another, denote hydrogen, alkyl, alkoxyalkyl, haloalkyl or phenalkyl, or, together, denote a (optionally substituted) C.sub.2 -C.sub.4 -alkylene bridge, and R.sup.3 denotes hydrogen or alkyl, are effective antidotes for protecting crop plants against phytotoxic side effects of herbicides.

Novel quinolinoxy compounds, a process for their preparation, and their

Compounds of the formula I ##STR1## in which R denotes halogen, hydroxyl, cyano, nitro, (substituted) alkyl, (substituted) alkoxy, (halo)alkylthio, carboxyl, alkoxycarbonyl; (halo)alkylsulf(inyl)(onyl) or -(onyloxy); (halo)phenyl or (halo)phenoxy; X in the 3- or 5-position denotes a (thio)carboxylic acid--or an optionally heterocyclic radical which is derived therefrom; Y denotes halogen, m denotes the number 0 or 1, and n denotes a number from 0 to 5, have valuable plant growth-regulating properties and are suitable, in addition, as safeners for protecting crop plants against phytotoxic side effects of herbicides.

Phenylpyrazolecarboxylic acid derivatives, their preparation, and their

Compounds of the formula (I) ##STR1## in which n denotes a number from 2 to 6, m denotes 1 or 2,

Carbamoylimidazole derivatives and their use as fungicides

1,2-Disubstituted piperidines of the general formula I ##STR1## in which X denotes oxygen or sulfur; R denotes alkyl, R.sup.1 and R.sup.2 denote hydrogen, alkyl or benzyl, R.sup.3 denotes hydrogen, (substituted) alkyl, (substituted) benzyl or a radical of the formulae ##STR2## Y and X denote S or O; Z denotes S, O or NR.sup.1 ; R.sup.4 denotes hydrogen, (substituted) alkyl, (substituted) phenyl, (substituted) naphthyl or (substituted) pyridyl, A denotes (substituted) phenyl or (substituted) naphthyl and m denotes 0, 1 or 2, possess advantageous herbicidal properties.

1,2-disubstituted piperidines, processes for their preparation and their

Compounds of the formula ##STR1## in which X denotes O or S; R and R.sup.1 denote H, halogen, alkyl, alkoxy, CN, NO.sub.2 or CF.sub.3 ; R.sup.2 denotes H or alkyl; Y denotes an optionally substituted alkylene or phenylene group and Z denotes a carboxyl, carboxylate, carboxylic acid ester, carboxamide, nitrile or thioamide group, are suitable for reducing the phytotoxicity of herbicides in useful plants.

Benzoxazolyl- and benzothiazolyl-amino acids, their preparation and

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Kelkheim, Germany

Hilmar Mildenberger