Evonik Degussa Gmbh

Michael Volland

Thomas Haas

Thomas Tacke

Jan Christoph Pfeffer

Roger Sheldon

Michael Rimbach

Michiel Janssen

Harald Haeger

Uwe Dingerdissen

Steffen Schaffer

Martin Roos

Mirja Wessel

Hans-Georg Joerg Hennemann

Harald Schmidt

Christian Lettmann

Florian Klasovsky

Stefanie Rinker

Harald Häger

Juergen Haberland

Jasmin Corthals

Jürgen Haberland

Jan Pfeffer

The invention relates to a whole-cell catalyst which expresses a recombinant &#x3b1;-dioxygenase or the combination of a recombinant fatty acid reductase and a phosphopantetheinyl transferase which phosphopantetheinylates the fatty acid reductase, and which expresses, in addition to the &#x3b1;-dioxygenase and/or the combination of fatty acid reductase and phosphopantetheinyl transferase, a transaminase, wherein the phosphopantetheinyl transferase and/or transaminase is preferably recombinant; and also to a process for converting a carboxylic acid or dicarboxylic acid or a monoester thereof to an amine or diamine, comprising the steps of contacting the carboxylic acid or dicarboxylic acid or the monoester thereof with a phosphopantetheinylated fatty acid reductase or an &#x3b1;-dioxygenase and contacting the product with a transaminase.

Producing amines and diamines from a carboxylic acid or dicarboxylic acid or a monoester thereof

The invention relates to a method for the oxidation of a primary or secondary alcohol, preferably to form an aldehyde or ketone, comprising the following steps: a) providing a catalyst composition comprising at least one compound containing a nitroxyl radical, at least one NO source, at least one carbon or mineral acid or an anhydride of a carbon or mineral acid; b) producing a reaction mixture by adding at least one primary or secondary alcohol and a gas comprising oxygen and optionally one or more than one solvent to the catalyst composition from step a) or step e); c) incubating the reaction mixture from step b) at a temperature of between 0 and 100&#xb0; C. or at the boiling point of the solvent; d) simultaneously with or subsequent to step c): crystallizing the reaction product; and e) recovering the catalyst composition by removing the crystallized reaction product from the reaction mixture obtained in step d).

Continuously operable method for producing carbonyl compounds by means of a catalyst containing a nitroxyl radical

The invention relates to a method for producing 2,6-dioxabicyclo-(3.3.0)-octane-4,8-dione (I), comprising the oxidation of dianhydrohexitols (II-IV), or of corresponding hydroxy ketones, with an oxygen-containing gas in the presence of a catalyst composition, the reaction proceeding without the addition of halogen sources.

Method for producing 2,6-dioxabicyclo-(3.3.0)-octane-4,8-dione

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Duelmen, Germany

Michael Volland