Dsm IP Assets B.v.

Dsm Fine Chemicals Austria Nfg Gmbh & Co. Kg

Paulus Lambertus Alsters

Johan Franz Gradus Antonius Jansen

Ruben Van Summeren

Engelina Catharina Kleuskens

Edwin Gerard Ijpeij

Ruben Summeren Van

Process for producing biaryl compounds by aerobic cross dehydrogenative coupling (CDC) of two arene groups comprising at least one aryl carbon-hydrogen bond, in the presence of a catalyst system comprising a palladium salt comprising at least one non-cyclopalladatable carboxylate anion and one or more non-beta-eliminatable, non-cyclopalladatable ligands comprising at least one N-donor atom, the one or more ligands having a 0.5/1-1.5/1 molar ratio of N-donor atoms relative to the Pd atoms.

Process for the production of biaryl compounds

Use of a transition metal complex a) as a drier for air drying auto-oxidative resin composition comprising a polymer b) comprising unsaturated fatty acid residues, wherein the transition metal complex a) has a cation of the following structure (I) wherein R&#x2550;C1-C20 alkyl optionally substituted with heteroatoms, C6-C20 aryl optionally substituted with heteroatoms, or a polymeric residue; R&#x2550;H, C1-C20 alkyl optionally substituted with heteroatoms, C6-C20 aryl optionally substituted with heteroatoms; X&#x2550;O, OC(R)O in which a=4 when X&#x2550;O, and a=3 when X&#x2550;OC(R)O, R&#x2550;C1-C20 alkyl optionally substituted with heteroatoms, C6-C20 aryl optionally substituted with heteroatoms, or a polymeric residue. 

Manganese complex drier for coating compositions

The invention relates to novel nitrile compounds according to formula I and II: (I) Formula I wherein: X=&#x2014;CHor &#x2014;C&#x2261;N, (II) Formula II wherein: X=&#x2014;CHor &#x2014;C&#x2261;N, each Y is independently chosen from &#x2014;OH or RC(0)0-, each R is independently chosen from a C1-21 alkyl group. The invention also relates to processes for the preparation of nitrile compounds according to formula I and II and to uses of the nitrile compounds. 

Preparation of nitrile compounds

The invention relates to the use of one or more &agr;-keto carboxylic acid esters and/or aldehyde carboxylic acid esters for stabilizing hydrogen peroxide during enzyme-catalyzed or metal-catalyzed oxidation reactions in organic synthesis, as well as for stabilizing hydrogen peroxide or aqueous or organic hydrogen peroxide solutions during production, storage and transport.

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Maastricht, Netherlands

Paulus Lambertus Alsters