Nitrokemia Ipartelepek

Magyar Tudomanyos Akademia Kozponti Kemiai Kutato Intezete

Nitrokaelepek

Magyar Tudomenyos Akademia Novenyvedelmi Kutato Intezete

Csaba Soptei

Lajos T Nagy

Zoltan Kolonics

Jeno Pelyva

Elemer Tomordi

Sandor Balint

Bela Karacsonyi

Laszlo Lendvai

Dezso Sebok

Jozsef Dukai

Janosne Benczik

Laszlo Legradi

Gyorgy Matolcsy

Antal Gimesi

Laszlo Simandi

Sandor Nemeth

Gabor Besenyei

Andras Horvath

Judit Benczik Nee Pasztor

Csaba Kayos

Maria Belak

Sandor Laszlo

Pal Agocs

Erzsebet E Dioszegine

Barna Bordas

Sandor Gaal

Jozsef Karsai

Ivan Belai

Maria Szabo

Gyorgy Kiss

Endre Sebestyen

Ivan Gardi

Janisz Sztatisz

Imre Csatlos

Imre Varga

Tibor Kranitz

Mariann Kardos Nee Nikoletti

Antalne Tombor

Aniko Gerlei Nee Komaromy

Tibor Cserhati

Agota Tombor Nee Szotyori

Krisztina Pelejtei Nee Bauer

Jozsef Fodor

Sandor Boros

Andras Papp

Erzsebet Dioszegi

Denzso Sebok

Ferenc Fodor, Deceased

Agota Kener

K Istvan Vecsey

Geza Szabo

Sandor Silye

Jolan Cseke

Process for the preparation of N-phenyl-N-methoxyacetyl-DL-alanine methyl ester derivatives of the formula (I). ##STR1## wherein R is a C.sub.1-4 alkyl residue; and n is a cardinal number between from 1 to 3, which comprises reacting an N-methoxyacetyl derivative of the formula (II). ##STR2## wherein R and n are as defined above, with a stoichiometric amount of an alkaline metal alkoxide, at a temperature between 80.degree. C. and 150.degree. C., until completion of the removal of the alkanol present in the system, then reacting the thus obtained alkaline metal salt of the compound of formula (II) directly or after isolation with a methyl DL-x-halopropionate.

Process for preparing N-phenyl-N-methoxyacetyl-DL-alanine methyl ester

The invention relates to a process for preparing arylsulphonyl isocyanates of the general formula (I) ##STR1## and addition derivatives thereof--where in the formula the meaning of the substituents are as follows:

Process for preparing arylsulphonyl-isocyanates and addition derivatives

Herbicidal compositions comprising a substituted thiolcarbamate derivative corresponding to the formula (I) wherein R.sub.1, R.sub.2 and R.sub.3 are selected independently from alkyl groups having 1 to 4 carbon atoms and/or a chloroacetanilide derivative corresponding to the formula (II) wherein R.sub.4 and R.sub.5 are hydrogen or alkyl group having 1 to 4 carbon atoms, identical or different, R.sub.6 is an alkoxyalkyl group corresponding to the formula --R.sub.7 --O--R.sub.8 in which R.sub.7 and R.sub.8 are selected from alkyl groups having 1 to 4 carbon atoms and, as an antidote, a thiocarbamic acid derivative corresponding to the formula (III) wherein R.sub.9 and R.sub.10 independently from each other are alkyl or alkenyl group having 1 to 4 carbon atoms, or R.sub.9 and R.sub.10 taken together with one or two nitrogen atoms form a heterocyclic group, which may contain one oxygen atom or they form a soiro-heterocyclic or condensated ring, which can be substituted with alkyl groups having 1 to 4 carbon atoms or an aryl group, R.sub.11 is an alkyl or alkenyl group having 1 to 3 carbon atoms or a benzyl group containing one or 2 substituents, carboxy methylene, 1-methylene naphtyl, acetophenon-(2)-yl-, carb-(.alpha.)naphthoxy-methylene, N-methylene o-benzoic acid sulphimide, N-isopropyl-N-phenylacetamidyl, N,N-disubstituted-2-acetamidyl group containing alkyl, alkylene groups having 1 to 3 carbon atoms, alkoxyalkyl, phenyl or dialkyl phenyl group.

Antidoted herbicide compositions and antidote compositions

The invention relates to an improvement of a process for preparing N-phosphonomethyl-glycine by oxydation of N-phosphonomethyl-imino-diacetic acid in an aqueous sulphuric acidic medium with hydrogen peroxide. A characteristic feature is using a waste acid liquor as reaction medium formed as aqueous sulphuric acid and obtained after the separation of N-phosphonomethyl-glycine when carrying out oxydation. This solution is optionally diluted with water until a concentration of 12-18 weight % of sulphuric acid and 3-5 weight % of N-phosphonomethyl-glycine.

Process for preparing N-phosphonomethyl-glycine

A process for preparing methoxyacetic acid by reacting monochloroacetic acid with sodium methylate, in a methanolic solvent at increased temperature. Methanol is distilled off and methoxyacetic acid methylester is added to the residue. The stirrable mixture is contacted with dry hydrochloric acid gas. The methoxyacetic acid methylester is distilled off after removing the precipitated sodium chloride, to recover the desired product.

Process for preparing methoxyacetic acid

The invention relates to a process for preparing sulphonyl-ureas of the general formula (I) ##STR1## wherein Ar.sub.1 represents a phenyl, naphthyl or thienyl group, the derivatives thereof substituted by C.sub.1-4 alkyl, C.sub.1-4 haloalkyl, (halo)alkoxycarbonyl, (halo)alkyloxy, nitro, cyano groups as well as by halogen atoms,

Process for preparing N-sulphonyl-ureas

The invention relates to the preparation of N-phosphono-methyl-imino-diacetic acid from the calcium salt of imino-diacetic acid in a simplified synthesis. The process comprises in that the imino-diacetic acid calcium salt is heated with concentrated hydrochloric acid in a molar ratio of 2-3:1 at a temperature between 50.degree.-100.degree. C., the obtained imino-diacetic acid hydrogen-chloride is separated then dissolved in water and is reacted with phosphorous acid in a molar ratio of 1.0-1.2:1 calculated for imino-diacetic acid hydrogen chloride and with the aqueous solution of formaldehyde in a molar ratio of 1.0-1.4:1 under stirring, and the obtained product is isolated.

Process for preparing N-phosphono-methyl-imino-diacetic acid

Process for the preparation of

2-chloro-ethyl phosphonic acid esters and plant growth regulating agents

A new and improved herbicidal and plant growth regulating composition, and the method of manufacturing that composition. The new complex composition of the invention is an inclusion complex of one more benzene sulphonyl urea derivative of the general formula (II) ##STR1## and two or more moles of beta cyclodextrine of the formula (I). ##STR2##

.beta.-Cyclodextrine complex of benzene sulphonyl urea derivatives

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Csaba Soptei