EP0163442A1
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EP
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Process for the preparation of esters of dicarboxylic acids
Assignee: BP PLC
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Filing: 1985-05-09
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Granted: —
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Expires: 2005-05-09
Abstract
Abstract A process for the preparation of an ester of dicarboxylic acid from an alkene, carbon monoxide is provided. The process is catalysed by a catalyst which comprises a platinum group metal, for example palladium, and a copper compound. To avoid catalyst deactivation the process is carried out in the presence of a dihydrocarbyl peroxide which is reduced to a hydrocarbyl alcohol under the process conditions. The process can be used, for example, to prepare succinate esters from ethylene, carbon monoxide an alcohol and dihydrocarbyl peroxide such as di-tertiary butyl peroxide.
Inventors
- 👤 Richard Andrew Lucy
- 👤 George Ernest Morris
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 12:24
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/36; C07C67/38; C07C69/00; C07C69/34
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
46 words
A process for the production of an ester of a dicarboxylic acid which process comprises reacting an alkene with carbon monoxide, an alcohol and a dihydrocarbyl peroxide in the presence of an effective amount of a catalyst comprising a platinum group metal and a copper compound.
Claim 2
Dependent Claim
46 words
A process for the production of an ester of a dicarboxylic acid which process comprises reacting an alkene with carbon monoxide, an alcohol and a dihydrocarbyl peroxide in the presence of an effective amount of a catalyst comprising a platinum group metal and a copper compound.
Claim 3
Dependent Claim
54 words
A process as claimed in claim 1 wherein the dihydrocarbyl peroxide has the formula (RR 1 R 2 )C-O-O-C(RR 1 R 2 ) where R, R 1 and R 2 are independently hydrogen or hydrocarbyl radicals selected from the group consisting of alkyl, aryl, aralkyl or alkaryl radicals having up to nine carbon atoms.
Claim 4
Dependent Claim
18 words
A process as claimed in claim 2 wherein the dihydrocarbyl peroxide is di-tertiary butyl peroxide or di-cumyl peroxide.
Claim 5
Dependent Claim
14 words
A process as claimed in claim 1 wherein the platinum group metal is palladium.
Claim 6
Dependent Claim
16 words
A process as claimed in claim 1 wherein the copper compound is a copper (1) compound.
Claim 7
Dependent Claim
19 words
A process as claimed in claim 1 wherein the alcohol is a C l to C 12 aliphatic alcohol.
Claim 8
Dependent Claim
20 words
A process as claimed in claim 6 wherein the alcohol is selected from methanol, ethanol, isopropanol, n-butanol and tertiary butanol.
Claim 9
Dependent Claim
20 words
A process as claimed in claim 1 wherein there is added a heterocyclic aromatic nitrogen containing compound as a promoter.
Claim 10
Dependent Claim
19 words
A process as claimed in claim 8 wherein the heterocyclic aromatic nitrogen containing compound contains a trivalent nitrogen atom.
Claim 11
Dependent Claim
27 words
A process as claimed in claim 9 wherein the heterocyclic aromatic nitrogen compound is selected from a pyridine, a pyrrole, an imidazole, an N-methylimidazole and a quinoline.
Claim 12
Dependent Claim
20 words
A process as claimed in claim 10 wherein the heterocyclic aromatic nitrogen compound is pyridine or a substituted derivative thereof.
Claim 13
Dependent Claim
14 words
A process as claimed in claim 1 wherein there is added a nitrile promoter.
Claim 14
Dependent Claim
26 words
A process as claimed in claim 12 wherein the nitrile promoter is a C 1 -C 12 alkyl nitrile or a substituted or unsubstituted aromatic nitrile.
Claim 15
Dependent Claim
16 words
A process as claimed in claim 12 wherein the nitrile is acetonitrile, propionitrile, adiponitrile or benzonitrile.
Claim 16
Dependent Claim
21 words
A process as claimed in claim 1 wherein there is also added a Group IA or IIA halide salt as promoter.
Claim 17
Dependent Claim
22 words
A process as claimed in claim 14 wherein the Group IA or IIA halide promoter is either lithium chloride or lithium bromide.
Claim 18
Dependent Claim
19 words
17 A process as claimed in claim 1 wherein the alkene is selected from ethylene, propylene, butadiene and styrene.
Claim 19
Dependent Claim
41 words
A process for the production of an diester of succinic acid which process comprises reacting ethylene with carbon monoxide, an alcohol and a dihydrocarbyl peroxide in the presence of an effective amount of a catalyst comprising palladium and a copper compound.
Claim 20
Dependent Claim
41 words
A process for the production of an diester of succinic acid which process comprises reacting ethylene with carbon monoxide, an alcohol and a dihydrocarbyl peroxide in the presence of an effective amount of a catalyst comprising palladium and a copper compound.
Claim 21
Dependent Claim
33 words
A process as claimed in claim 1 wherein no alcohol is added to the reaction mixture and wherein ester groups of the ester of the dicarboxylic acid are derived from the dihydrocarbyl peroxide.
Claim 22
Dependent Claim
30 words
A process as claimed in claim 1 wherein hydrogen if present in the carbon monoxide is present in amounts less than 20 mole X of the total amount of gas.
References Cited (Backward Citations)
DE2161418A1
Cited
GB2024821A
Cited
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