Clariant Corporation

Hoechst Aktiengesellschaft

Celanese Gmbh

Aventis Research & Technologies Gmbh & Co Kg

Axiva Gmbh

Aventis Research & Technology Gmbh & Co. Kg

Ipocean Global Gmbh

Holger Geissler

Peter Gross

Ralf Pfirmann

Stefan Scherer

Matthias Beller

Andreas Meudt

Steffen Haber

Sandra Bogdanovic

Frank Vollmueller

Bianca Guckes

Lars A Van Der Veen

Petrus W N M Van Leeuwen

Paul C J Kamer

Wolfgang Anton Herrmann

Thomas Riermeier

Klaus Raab

Hartmut Fischer

Daniel Decker

Claus Peter Reisinger

Michael Klimpel

A method for information transmission. In a first transaction step, a first data record is generated by the transmission terminal, and the first data record is transferred to a blockchain. In a first verification step, the first data record in the blockchain is verified and stored as a first verified data record. In a second transaction step, a second data record is generated by the receiver terminal, and the second data record is transferred to the blockchain. In a second verification step, the second data record in the blockchain is verified and stored as a second verified data record. In a data encryption step, encrypted data are generated by the transmission terminal. In a transmission step, encrypted data are transmitted to the receiver terminal. In a data decryption step, a piece of electronic information is made accessible to the receiver.

Method and system for information transmission

Process for preparing phenylacetic acid derivatives

Valeraldehyde and process for its preparation

A process for separating hydrogen chloride from a mixture including an N-(C -C )-alkyl-2-pyrrolidone and hydrogen chloride by distilling the mixture including an N-(C -C )-alkyl-2-pyrrolidone and hydrogen chloride at from 100 to 220&deg; C. and from 50 to 850 hPa in the presence of water in a distillation column, condensing the water as water-hydrogen chloride azeotrope at the top by cooling, returning the water-hydrogen chloride azeotrope to the distillation column, separating off gaseous hydrogen chloride at the top and taking off the N-(C -C )-alkyl-2-pyrrolidone from the bottom.

Process for separating hydrogen chloride from a mixture comprising an N-alkyl-2-pyrrolidone and hydrogen chloride

Method for the catalytic production of substituted bipyridyl derivatives

Biaryls, e,g,. biphenyls, phenylpyridines, phenylfurans, phenylpyrroles, phenylthiophenes, bipyridines, pyridylfurans or pyridylpyrroles are prepared in high yields by coupling aromatics with an aromatic boric acid or boric ester in the presence of a palladaphosphacyclobutane catalyst.

Process for preparing biaryls in the presence of palladophosphacyclobutane catalysts

Process for preparing aromatic amines in the presence of palladaphosphacyclobutane catalysts

Process for the preparation of isochroman-3-ones

The present invention relates to a process for the preparation of a 3-isochromanone of the formula (I)

Process for the preparation of 3-isochromanoes by cyclization of o-chloromethylphenylacetic acids

The invention relates to a process for preparing monofunctional, bifunctional and polyfunctional aromatic olefins of the formula (I)

Process for preparing aromatic olefins by using palladaphosphacyclobutanes as catalysts

Process for recovering cobalt carbonyl catalysts used to produced

Dipalladaphosphacyclobutanes and a process for preparing the same

The present invention relates to a process for preparing an isochroman-3-one of the formula (I) by reacting a 1,2-bishalomethylbenzene of the formula (II) ##STR1## in which X is chlorine, bromine or iodine with carbon monoxide and water at a CO pressure of from 0.1 to 50 MPa and a temperature of from 20 to 200.degree. C. in the presence or absence of an ionic halide, in the presence of a palladium catalyst and a dipolar aprotic solvent, where in the formulae (I) and (II) the radicals R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently of one another denote:

Process for preparing isochroman-3-ones

Good yields and selectivities are achieved in a process for preparing an isochroman-3-one of the formula (I) ##STR1## by reacting a 1,3-dihydroisobenzofuran of the formula (II) ##STR2## with carbon monoxide at a CO pressure of from 0.1 to 20 MPa in the presence of an ionic halide, a palladium catalyst and a dipolar aprotic solvent.

Process for the catalytic preparation of 3-isochromanones from phthalans

Growing community of inventors

Mainz, Germany

Holger Geissler