EP0144936A2
Expired / Lapsed
EP
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Production of carboxylic acids from alcohols
Assignee: Union Carbide Corp
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Filing: 1984-11-30
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Granted: —
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Expires: 2004-11-30
Abstract
Abstract A process for the production of organic carboxylic acids by the catalytic reaction of an alcohol and carbon monoxide in contact with an organic ester or a compound which under the reaction conditions is convertible to an organic ester and a homogeneous catalyst system containing rhodium metal atom and a mixture of lithium iodide and methyl iodide.
Inventors
- 👤 David James Schreck
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 17:08
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/10; C07C51/12; C07C53/00; C07C53/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
115 words
A process for the production of organic carboxylic acids of the formula RCOOH which comprises the catalytic reaction of an alcohol of the formula ROH and carbon monoxide in contact with an organic ester or a compound which under the reaction conditions can be converted to an organic ester and a homogeneous catalyst system consisting essentially of rhodium metal atom and a mixture of lithium iodide and methyl iodide, wherein R is an alkyl group having from 1 to 30 carbon atoms, or aryl, aralkyl or alkaryl groups having 6 or 10 ring carbon atoms with from 1 to 10 carbon atoms in the alk-moiety thereof, or alkenyl having from 2 to 30 carbon atoms.
Claim 2
Dependent Claim
115 words
A process for the production of organic carboxylic acids of the formula RCOOH which comprises the catalytic reaction of an alcohol of the formula ROH and carbon monoxide in contact with an organic ester or a compound which under the reaction conditions can be converted to an organic ester and a homogeneous catalyst system consisting essentially of rhodium metal atom and a mixture of lithium iodide and methyl iodide, wherein R is an alkyl group having from 1 to 30 carbon atoms, or aryl, aralkyl or alkaryl groups having 6 or 10 ring carbon atoms with from 1 to 10 carbon atoms in the alk-moiety thereof, or alkenyl having from 2 to 30 carbon atoms.
Claim 3
Dependent Claim
24 words
A process as claimed in claim 1 wherein the temperature is from 50°C to 350°C and the pressure is from 10,35 to 690 bar.
Claim 4
Dependent Claim
23 words
A process as claimed in claim 1 wherein the mole ratio of Rh:LiI is from 1:1 to 1:1.000 or from 1:8 to 1:150.
Claim 5
Dependent Claim
59 words
A process as claimed in claims 1 to 3 wherein said alcohol has (i) alkyl groups having from 1 to 15 carbon atoms, (ii) alkenyl groups having from 2 to 15 carbon atoms, or (iii) aryl, aralkyl or alkaryl groups having from 6 to 10 ring carbon atoms and from 1 to 4 carbon atoms in the alk-moiety thereof.
Claim 6
Dependent Claim
20 words
A process as claimed in claimsl to 4 wherein said organic ester is methyl acetate and said alcohol is methanol.
Claim 7
Dependent Claim
36 words
A process as claimed in claims l to 5 wherein an organic ligand of the formula ER 3 " is present, wherein E is nitrogen, phosphorus, arsenic. antimony and bismuth and R'' is an organic moiety.
Claim 8
Dependent Claim
25 words
A process as claimed in claims 1 to 6 wherein said compound convertible to an organic ester is an organic acid or an acid anhydride.
Claim 9
Dependent Claim
13 words
A process as claimed in claim 6 wherein said ligand is a phosphine.
Claim 10
Dependent Claim
32 words
A process as claimed in claim 1 to 8 wherein the mole ratio of LiI:CH 3 I is from 1:1,000 to 1,000:1 or from 1:450 to 450:1 or from 1:150 to 150:1.
References Cited (Backward Citations)
No citation records indexed.
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