Abstract: The present invention relates to novel methods for preparing cis-alkoxy-substituted spirocyclic 1-H-pyrrolidine-2,4-dione derivatives and also to novel intermediates and starting compounds, which are passed through or used in the method according to the invention.

Abstract: The present invention relates to novel methods for preparing cis-alkoxy-substituted spirocyclic 1-H-pyrrolidine-2,4-dione derivatives and also to novel intermediates and starting compounds, which are passed through or used in the method according to the invention.

Abstract: The present invention relates to a novel process for preparing cis-alkoxy-substituted spirocyclic phenylacetylamino acid esters and cis-alkoxy-substituted spirocyclic 1H-pyrrolidine-2,4-dione derivatives, and also to novel intermediates and starting materials which are produced and/or used in the process according to the invention.

Abstract: The present invention relates to a novel process for preparing halogenated di-substituted benzylamines, particularly halogenated dialkylbenzylamines.

Abstract: The present invention relates to a novel process for preparing halogenated di-substituted benzylamines, particularly halogenated dialkylbenzylamines.

Abstract: The present invention relates to a novel process for preparing cis-alkoxy-substituted spirocyclic phenylacetylamino acid esters and cis-alkoxy-substituted spirocyclic 1H-pyrrolidine-2,4-dione derivatives, and also to novel intermediates and starting materials which are produced and/or used in the process according to the invention.

Abstract: The present invention relates to a novel process for preparing cis-alkoxy-substituted spirocyclic phenylacetylamino acid esters and cis-alkoxy-substituted spirocyclic 1H-pyrrolidine-2,4-dione derivatives, and also to novel intermediates and starting materials which are produced and/or used in the process according to the invention.

Abstract: A method for preparing a 2,2-difluoroethylamine of the formula (III) in which 2,2-difluoroethylamine of the formula (I) is reacted with a halide of the formula (II) in the presence of a tertiary nitrogen base: where, in the formulae (II) and (III), Hal and A are defined as stated in the description.

Abstract: A method for preparing a 2,2-difluoroethylamine of the formula (III) in which 2,2-difluoroethylamine of the formula (I) is reacted with a halide of the formula (II) in the presence of a tertiary nitrogen base: where, in the formulae (II) and (III), Hal and A are defined as stated in the description.

Abstract: The invention relates to a process for preparing diaryl carbonates and/or alkyl aryl carbonates from dialkyl carbonates and aromatic hydroxy compounds using a reactive dividing wall column.

Abstract: Process for preparing 2,2-difluoroethylamine, comprising the following steps: (i) mixing 2,2-difluoro-1-chloroethane and gaseous, liquid or supercritical ammonia in a pressure-stable, closed reaction vessel under a pressure in the range from 10 to 180 bar; (ii) reacting the reaction mixture at a reaction temperature in the range from 80° C. to 200° C.; (iii) letting down the reaction mixture and isolating 2,2-difluoroethylamine.

Abstract: A method for separating electrolyte-containing water from an organic phase by means of permeation on a hydrophobic separating means. The permeated organic solution is substantially depleted in water and the retained water is enriched with electrolytes.

Abstract: Process for preparing 2,2-difluoroethylamine, comprising the following steps: (i) mixing 2,2-difluoro-1-chloroethane and gaseous, liquid or supercritical ammonia in a pressure-stable, closed reaction vessel under a pressure in the range from 10 to 180 bar; (ii) reacting the reaction mixture at a reaction temperature in the range from 80° C. to 200° C.; (iii) letting down the reaction mixture and isolating 2,2-difluoroethylamine.

Abstract: The invention relates to a process for preparing diaryl carbonates and/or alkyl aryl carbonates from dialkyl carbonates and aromatic hydroxy compounds using a reactive dividing wall column.

Abstract: The invention relates to a metal matrix material made of a hydrogen-permeable metal 1 and a chemically stable metal 2 that is also hydrogen permeable, said matrix material having a structure comprised of a plurality of centers made of the metal 2 surrounded by the metal 1. The invention further relates to a method for the production of said matrix material, having the following steps: a. optionally pretreating the metal 1 and/or 2 b. coating metal 1 with a metal 2 to form a composite metal powder c. pressing the composite metal powder into the metal matrix material according to the invention in the form of a pressed body d. optionally deforming the pressed body thus obtained to form a molded body. The metal matrix material has a greater mechanical stability as compared to a conventionally coated metal film by virtue of a more homogeneous stress distribution during the change in volume of the metal phases as a result of hydrogen absorption and thermal expansion.

Abstract: The invention relates to an industrial process for purifying the product mixture of a transesterification reaction with a polar, electrolyte-containing organic phase, in which the electrolytes are removed from the permeating polar organic phase by means of a nanofiltration step.

Abstract: The invention relates to a catalytically active membrane pore flow reactor, to the membrane used and to processes using this reactor.

Abstract: A method for separating electrolyte-containing water from an organic phase by means of permeation on a hydrophobic separating means. The permeated organic solution is substantially depleted in water and the retained water is enriched with electrolytes.

Abstract: A process is disclosed comprising: (a) reacting hydrogen chloride and oxygen to form a gas mixture comprising chlorine, water, unreacted hydrogen chloride, and unreacted oxygen; (b) cooling the gas mixture to form an aqueous solution of hydrogen chloride; (c) separating at least a portion of the aqueous solution of hydrogen chloride from the gas mixture; (d) removing at least a portion of the water from the gas mixture; and (e) subjecting the gas mixture to a gas permeation such that at least a portion of the unreacted oxygen in the gas mixture is separated to form a chlorine-rich gas stream and an oxygen-containing partial stream.

Abstract: A process is disclosed comprising: (a) reacting hydrogen chloride and an oxygen-containing gas to form a gas mixture comprising chlorine, water, unreacted hydrogen chloride, and unreacted oxygen, wherein the oxygen-containing gas reacted with the hydrogen chloride has an oxygen content of not more than 99 vol. %; (b) cooling the gas mixture to form an aqueous solution of hydrogen chloride; (c) separating at least a portion of the aqueous solution of hydrogen chloride from the gas mixture; and (d) subjecting the gas mixture to a gas permeation to form a chlorine-rich gas stream and an oxygen-containing partial stream.