Rhodium-catalyzed oxidation process for producing carboxylic aci

Details Rhodium-catalyzed oxidation process for producing carboxylic aci Rhodium-catalyzed oxidation process for producing carboxylic aci

1980-06-16

1981-06-16

Evans, Joseph E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

562512, 562522, 562531, 562544, 260546, 568454, C07C 53122, C07C 51145, C07C 51235

Patent

active

042739365

ABSTRACT:
A one-step process is disclosed for forming a carboxylic acid and its anhydride directly from the corresponding olefin which comprises reacting the olefin with carbon monoxide, hydrogen and oxygen in the presence of a stable rhodium complex catalyst. The rhodium catalyst is stabilized by a pentavalent Group V ligand, such as a phosphine oxide. The reaction is preferably conducted in an inert organic solvent. In an alternate embodiment, a carboxylic acid may be obtained by oxidation of an aldehyde (produced, for example, by hydroformylation of the corresponding olefin) in the presence of a rhodium complex catalyst stabilized by a pentavalent Group V ligand. This reaction is also preferably conducted in an inert organic solvent.

REFERENCES:
patent: 2815355 (1957-12-01), Hill
patent: 3415871 (1968-12-01), Olivier
patent: 3637833 (1972-01-01), Fenton
patent: 3954877 (1976-05-01), Gipson
patent: 4196096 (1980-04-01), Dunes et al.

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