GB1143115A - Isomerization of molten monoalkyl maleates to monoalkyl fumarates - Google Patents
Isomerization of molten monoalkyl maleates to monoalkyl fumaratesInfo
- Publication number
- GB1143115A GB1143115A GB4436266A GB4436266A GB1143115A GB 1143115 A GB1143115 A GB 1143115A GB 4436266 A GB4436266 A GB 4436266A GB 4436266 A GB4436266 A GB 4436266A GB 1143115 A GB1143115 A GB 1143115A
- Authority
- GB
- United Kingdom
- Prior art keywords
- monoalkyl
- fumarates
- converted
- maleate
- molten
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/52—Esters of acyclic unsaturated carboxylic acids having the esterified carboxyl group bound to an acyclic carbon atom
- C07C69/593—Dicarboxylic acid esters having only one carbon-to-carbon double bond
- C07C69/60—Maleic acid esters; Fumaric acid esters
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,143,115. Monoalkyl fumarates. CHAS. PFIZER & CO. Inc. 4 Oct., 1966 [10 May, 1966], No. 44362/66. Heading C2C. A monoalkyl maleate of the formula where R is alkyl containing from 12 to 20 carbon atoms is converted to the corresponding monoalkyl fumarate by treating the maleate in the molten state with a catalytic amount of bromine or iodine in the absence of light for a period in the range of from “-4 hrs., cooling the reaction mixture and recovering the reaction product. The temperature at which the process is carried out may be higher than the actual melting point of the starting material but below 150‹ C. and preferably in the range 95-105‹ C. The products may be converted to the corresponding alkali metal salts by conventional methods. The preparation of lauryl, myristyl, palmityl, stearyl and arachidyl mono-esters of fumaric acid and the sodium and potassium salts thereof is described.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US54886466A | 1966-05-10 | 1966-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1143115A true GB1143115A (en) | 1969-02-19 |
Family
ID=24190697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4436266A Expired GB1143115A (en) | 1966-05-10 | 1966-10-04 | Isomerization of molten monoalkyl maleates to monoalkyl fumarates |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR1512243A (en) |
| GB (1) | GB1143115A (en) |
| NL (1) | NL6702886A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3127432A1 (en) * | 1981-07-11 | 1983-02-03 | Bayer Ag, 5090 Leverkusen | METHOD FOR PRODUCING FUMAR ACID MONOESTER |
-
1966
- 1966-10-04 GB GB4436266A patent/GB1143115A/en not_active Expired
-
1967
- 1967-02-23 FR FR96253A patent/FR1512243A/en not_active Expired
- 1967-02-24 NL NL6702886A patent/NL6702886A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL6702886A (en) | 1967-11-13 |
| FR1512243A (en) | 1968-02-02 |
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