Basf Se Corporation

Basf Aktiengesellschaft

Windlin, Franz Niklaus

Ganz, Holger

Berens, Ulrich

Tishkov, Alexander

Holger Ganz

Ulrich Berens

Michael Bock

Oliver Huttenloch

Franz Niklaus Windlin

Patrick Deck

Wolfgang Körnig

Matthias Maase

Tiziana Chiodo

Matthias Dust

Walid Al-Akhdar

Alexander Tishkov

Gerhard Bertlein

Michael Mauβ

Michael Mauss

Michael Mauß

Wolfgang Koernig

A process for the removal of acids from reaction mixtures, comprising at least one product of value which is sparingly soluble in water, by at least one unpolar amine as an auxiliary base, which includes: a) reacting the auxiliary base with the acid with formation of a salt; b) reacting the salt formed in step a) with a further base which accepts the acid with liberation of the auxiliary base and combines with the acid to be accepted from the auxiliary base to form a salt which is very readily soluble in water; c) extraction of the mixture obtained in step b) with water or an aqueous medium, wherein the salt of the further base dissolves in the aqueous phase and the product of value, or the solution of the product of value, in a suitable solvent and the auxiliary base form at least one separate nonaqueous phase; and d) removal by distillation of at least part of any solvent present from the at least one nonaqueous phase obtained in step c), to form two nonmiscible liquid phases.

Method of separating acids from chemical reaction mixtures by means of apolar amines

A method of purifying an organic diphosphite of general formula (I)  The method comprises providing a crude organic diphosphite of general formula (I) that is at least partly dissolved in a first solvent (L1), wherein (L1) is selected from the group consisting of alkylbenzenes, aryl alkyl ethers, chlorobenzene, and mixtures thereof, and precipitating by admixing with a second solvent (L2) selected from the group consisting of linear C-C-alkanols, ethylene glycol di(C-C-alkyl) ethers, and mixtures thereof, and separating off the precipitated organic diphosphite from the solvents.

Method of purifying organic diphosphite compounds

The present invention relates to a process for preparing 6-chlorodibenzo[d,f][1,3,2]dioxaphosphepin (I) which comprises reacting 2,2'-dihydroxybiphenyl with PClin the presence of a catalytic amount of an acid salt of a nitrogen base, wherein the reaction is carried out in the absence of external organic solvents.

Process for preparing 6-chlorodibenzo[D,F][1,3,2]dioxaphosphepin

The present invention relates to a crystalline non-solvated form of 6,6'-[[3,3&#x2032;,5,5&#x2032;-tetrakis(1,1-dimethylethyl)-[1,1&#x2032;-biphenyl]-2,2&#x2032;-diyl]bis(oxy)]bis-dibenzo[d,f][1,3,2]-dioxaphosphepine (compound I) and toluene-solvates and acetone-solvates thereof.

Crystalline solvate and non-solvated forms of 6,6'-[[3,3&#x2032;,5,5&#x2032;-tetrakis(1,1-dimethylethyl)-[1,1&#x2032;biphenyl]-2,2&#x2032;-diyl]bis(oxy)]bis-dibenzo [d,f] [1,3,2]-dioxaphosphepine

A process for preparing mono- or poly-C-C-alkyl- and/or -halogen-substituted arylcarbonyl chlorides (I), by, in a first stage, reacting a mono- or poly-C-C-alkyl- and/or -halogen-substituted aromatic (II) with CClin the presence of a Friedel-Crafts catalyst to give the corresponding mono- or poly-C-C-alkyl- and/or -halogen-substituted trichloromethylated aromatic (III), and, in a second stage, treating the trichloromethylated aromatic (III) with water or a protic acid in the presence of a catalyst to obtain the arylcarbonyl chloride (I). In a particularly preferred embodiment, the trichloromethylated aromatic (III) is not isolated as an intermediate and is used in the second stage dissolved in the solvent of the first stage.

Method for producing substituted arylcarboxylic acid chlorides

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Ludwigshafen, Germany

Holger Ganz