GB576087A - Improvements in and relating to the production of 1:5 pentanediol - Google Patents
Improvements in and relating to the production of 1:5 pentanediolInfo
- Publication number
- GB576087A GB576087A GB570442A GB570442A GB576087A GB 576087 A GB576087 A GB 576087A GB 570442 A GB570442 A GB 570442A GB 570442 A GB570442 A GB 570442A GB 576087 A GB576087 A GB 576087A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pentanediol
- hydroxyvaleric
- aldehyde
- water
- dihydropyran
- 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
- C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C31/18—Polyhydroxylic acyclic alcohols
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/46—Dielectric heating
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1 : 5-Pentanediol is prepared by treating d -hydroxyvaleric aldehyde or its isomer 1 : 5-epoxy pentanol-5 with hydrogen at elevated temperatures and/or pressures in the presence of a hydrogenating catalyst. The reaction may be carried out in the liquid phase and in the presence of water. Suitable catalysts are the metals of group VIII or copper which may be supported on an inert carrier. In the examples, hydrogen, d -hydroxyvaleric aldehyde and a nickel on kieselguhr catalyst are reacted together (1) in the absence of water, (2) with water, to give 1 : 5-pentanediol, with some dihydropyran. d -Hydroxyvaleric aldehyde is prepared by hydrating dihydropyran in the presence of a mineral acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB570442A GB576087A (en) | 1942-04-28 | 1942-04-28 | Improvements in and relating to the production of 1:5 pentanediol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB570442A GB576087A (en) | 1942-04-28 | 1942-04-28 | Improvements in and relating to the production of 1:5 pentanediol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB576087A true GB576087A (en) | 1946-03-19 |
Family
ID=9801063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB570442A Expired GB576087A (en) | 1942-04-28 | 1942-04-28 | Improvements in and relating to the production of 1:5 pentanediol |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB576087A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5235118A (en) * | 1991-07-25 | 1993-08-10 | Eastman Kodak Company | Continuous process for the preparation of 2-ethyl-2-(hydroxymethyl)hexanal and 2-butyl-2-ethyl-1, 3-propanediol |
-
1942
- 1942-04-28 GB GB570442A patent/GB576087A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5235118A (en) * | 1991-07-25 | 1993-08-10 | Eastman Kodak Company | Continuous process for the preparation of 2-ethyl-2-(hydroxymethyl)hexanal and 2-butyl-2-ethyl-1, 3-propanediol |
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