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US 8,946,463 B2Granted
Process for the direct amination of alcohols using ammonia to form primary amines by means of a xantphos catalyst system
AssigneeEvonik Degussa GmbH
InventorsFlorian Klasovsky, Thomas Tacke, Jan Christoph Pfeffer, Thomas Haas, Matthias Beller, Andreas Martin, Jens Deutsch, Angela Koeckritz, Sebastian Imm, Juergen Haberland
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Abstract
The present invention relates to a chemocatalytic liquid-phase process for the direct one-stage amination of alcohols to primary amines by means of ammonia in high yields using a catalyst system containing at least one transition metal compound and a xantphos ligand.
Claims18
A process for preparing a primary amine, comprising:
- contacting a solution of an alcohol in a fluid, nongaseous phase,
- with free ammonia, an ammonia-liberating compound, or both, and a homogeneous catalyst system comprising carbonylchlorohydrido[9,9-dimethyl-4,5-bis(diphenylphosphino)xantheno]ruthenium(II)] as a xantphos ligand;
- and
- optionally isolating the primary amine obtained in the contacting.
1 more element
Dependencies are inferred from the claim text.