GB573778A - Manufacture of aliphatic dienes - Google Patents
Manufacture of aliphatic dienesInfo
- Publication number
- GB573778A GB573778A GB2009343A GB2009343A GB573778A GB 573778 A GB573778 A GB 573778A GB 2009343 A GB2009343 A GB 2009343A GB 2009343 A GB2009343 A GB 2009343A GB 573778 A GB573778 A GB 573778A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ether
- hexadiene
- sodium
- alkali
- hexane
- 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
- C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
- C07C1/20—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as heteroatoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
- C07C2521/14—Silica and magnesia
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Aliphatic dienes are produced by reacting di-b -alkenyl ethers with alkali metal. A b -unsaturated alcohol and b -unsaturated alkyl halide may be reacted in the presence of caustic alkali or alkali carbonate, and the ether produced reacted with alkali metal. Diallyl ether gives 1.5-hexadiene, dicrotyl ether, 2.6-octadiene, and dimethallyl ether, 2.5-dimethyl-1.5-hexadiene. Diallyl ether reacts at room temperature with sodium, and the reaction is preferably effected at not more than 100 DEG C. An inert diluent such as xylene, toluene, a less reactive ether, an excess of the starting material or the reaction product may be used. The metal alcoholate such as sodium allylate obtained as a by-product can be converted back to the ether with the appropriate alkyl halide. In an example, allyl alcohol is refluxed with caustic soda and allyl chloride added, the crude diallyl ether being distilled off and purified by fractionation. Sodium is added thereto and the mixture finally heated to distil the hexadiene. The ether and sodium, suspended for example in a diluent such as n-hexane, may be fed continuously, and hexadiene, with hexane if used, distilled off as formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2009343A GB573778A (en) | 1943-12-01 | 1943-12-01 | Manufacture of aliphatic dienes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2009343A GB573778A (en) | 1943-12-01 | 1943-12-01 | Manufacture of aliphatic dienes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB573778A true GB573778A (en) | 1945-12-05 |
Family
ID=10140261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2009343A Expired GB573778A (en) | 1943-12-01 | 1943-12-01 | Manufacture of aliphatic dienes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB573778A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2153842A (en) * | 1984-02-07 | 1985-08-29 | Coal Ind | Improvements in catalysts |
-
1943
- 1943-12-01 GB GB2009343A patent/GB573778A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2153842A (en) * | 1984-02-07 | 1985-08-29 | Coal Ind | Improvements in catalysts |
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