GB572752A - A process for the preparation of ª€-valerolactone - Google Patents
A process for the preparation of ª€-valerolactoneInfo
- Publication number
- GB572752A GB572752A GB690644A GB690644A GB572752A GB 572752 A GB572752 A GB 572752A GB 690644 A GB690644 A GB 690644A GB 690644 A GB690644 A GB 690644A GB 572752 A GB572752 A GB 572752A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reaction
- carried out
- salts
- soluble
- metals
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
d -Valerolactone is prepared by reacting d -hydroxy valeric aldehyde or its isomer epoxy 1-5 pentanol-5 with oxygen at superatmospheric temperature. Oxidation catalysts such as the oxides and salts of metals other than copper, having more than one valency state may be present, for example, cerium, cobalt, lead, manganese and chromium. When the reaction is carried out in the liquid phase, the catalyst selected should be soluble in the reaction mixture; the acetates, stearates, oleates and naphthenates of the abovementioned metals are salts soluble to an adequate extent. The reaction may be carried out in the presence of solvents such as acetic acid which are not oxidized under the reaction conditions. In the absence of a catalyst, the reaction proceeds at a reasonable rate at 90 DEG to 100 DEG C., but is slow below 80 DEG C. In examples: (1) air is bubbled through dry d -hydroxy valeric acid aldehyde at 100 DEG C. with stirring to form the lactone; (2) the reaction of (1) is carried out in the presence of cobalt acetate at 80-90 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB690644A GB572752A (en) | 1944-04-14 | 1944-04-14 | A process for the preparation of ª€-valerolactone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB690644A GB572752A (en) | 1944-04-14 | 1944-04-14 | A process for the preparation of ª€-valerolactone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB572752A true GB572752A (en) | 1945-10-22 |
Family
ID=9822993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB690644A Expired GB572752A (en) | 1944-04-14 | 1944-04-14 | A process for the preparation of ª€-valerolactone |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB572752A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1023756B (en) * | 1952-08-08 | 1958-02-06 | Unilever Nv | Process for the production of ª € -oxydodecanoeeurelactone serving as a flavoring agent (a € -oxylaurinic acid lactone) |
| DE1038549B (en) * | 1952-08-08 | 1958-09-11 | Unilever Nv | Process for the production of ª € -oxydekaneeurelactone serving as a flavoring agent |
-
1944
- 1944-04-14 GB GB690644A patent/GB572752A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1023756B (en) * | 1952-08-08 | 1958-02-06 | Unilever Nv | Process for the production of ª € -oxydodecanoeeurelactone serving as a flavoring agent (a € -oxylaurinic acid lactone) |
| DE1038549B (en) * | 1952-08-08 | 1958-09-11 | Unilever Nv | Process for the production of ª € -oxydekaneeurelactone serving as a flavoring agent |
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