GB660177A - Manufacture of 2-methyl-1,3-pentane diol - Google Patents
Manufacture of 2-methyl-1,3-pentane diolInfo
- Publication number
- GB660177A GB660177A GB16475/49A GB1647549A GB660177A GB 660177 A GB660177 A GB 660177A GB 16475/49 A GB16475/49 A GB 16475/49A GB 1647549 A GB1647549 A GB 1647549A GB 660177 A GB660177 A GB 660177A
- Authority
- GB
- United Kingdom
- Prior art keywords
- methyl
- basic substance
- pentane diol
- under
- lbs
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
2-Methyl-1,3-pentane diol is prepared by subjecting propionaldehyde to the action of heat in an inert organic solvent medium under a superatmospheric pressure of hydrogen and in the presence of a basic substance and a hydrogenation catalyst. The process is preferably carried out at a temperature between 200 DEG and 300 DEG F. under a hydrogen pressure of from 200 to 3000 lbs./sq. inch, the hydrogenation catalyst being preferably a nickel catalyst, e.g. Raney nickel. Suitable organic solvents are, for example, propyl alcohol, diethyl ether and acetal. The basic substance used may be an alkali metal compound such as sodium hydroxide or sodium carbonate or an alkaline earth metal compound, e.g. calcium oxide or magnesium oxide or an organic base such as ethanolamine. Preferably the quantity of basic substance present is such that the addition to the reaction mixture of an equal volume of water produces an aqueous solution having a pH of at least 7.5. In the example 2-methyl-1,3-pentane diol is produced by heating propionaldehyde dissolved in propyl alcohol in the presence of sodium hydroxide and Raney nickel under a hydrogen pressure of 800 lbs./sq. inch.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US660177XA | 1948-07-08 | 1948-07-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB660177A true GB660177A (en) | 1951-10-31 |
Family
ID=22066729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16475/49A Expired GB660177A (en) | 1948-07-08 | 1949-06-21 | Manufacture of 2-methyl-1,3-pentane diol |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB660177A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2939790A1 (en) * | 2008-12-16 | 2010-06-18 | Rhodia Poliamida E Especialidades Ltda | CATALYTIC PROCESS FOR THE PRODUCTION OF DIOL TYPE COMPOUNDS |
-
1949
- 1949-06-21 GB GB16475/49A patent/GB660177A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2939790A1 (en) * | 2008-12-16 | 2010-06-18 | Rhodia Poliamida E Especialidades Ltda | CATALYTIC PROCESS FOR THE PRODUCTION OF DIOL TYPE COMPOUNDS |
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