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US 10,538,468 B2Granted
Hydrogenation of aldehyde or ketone compounds with Fe/tridentate ligands complexes
AssigneeFirmenich SA
InventorsLionel Saudan, Jézabel Praz
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Abstract
The present invention relates to the field of catalytic hydrogenation and, more particularly, to the use of Fe complexes with tridentate ligands, having one amino or imino coordinating group and two phosphino coordinating groups, in hydrogenation processes for the reduction of ketones or aldehydes, into the corresponding alcohol or diol, respectively.
Claims9
A process for the reduction by hydrogenation, using molecular H2, of a C3-C70 substrate containing one or two ketone or aldehyde groups into the corresponding alcohol, or diol,
- wherein the process is carried out in the presence of at least one catalyst in the form of an iron complex of formula
- [Fe(L3)(L′)(Y)(Z)] (1)
- wherein L3 represents a tridentate ligand wherein the coordinating groups consist of one amino or imino group and two phosphino groups;
- L′ represents a CO or C1-11 isonitrile compound;
- Y represents a hydrogen atom or a C1-C14 carboxylic radical;
- Z represents a hydroxyl group, a C1-C14 carboxylic radical or a linear C1-C14 alkoxy radical;
- and
- optionally a salt of formula MX wherein M is an alkali metal cation and X is a non-coordinating mono anion, wherein the process is performed in the absence of a base.
5 more elements
Dependencies are inferred from the claim text.