GB681196A - Manufacture of acetyl-acetone - Google Patents
Manufacture of acetyl-acetoneInfo
- Publication number
- GB681196A GB681196A GB32982/49A GB3298249A GB681196A GB 681196 A GB681196 A GB 681196A GB 32982/49 A GB32982/49 A GB 32982/49A GB 3298249 A GB3298249 A GB 3298249A GB 681196 A GB681196 A GB 681196A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acetone
- ethyl acetate
- mixture
- acetyl
- acetate
- 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
- C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
- C07C49/04—Saturated compounds containing keto groups bound to acyclic carbon atoms
- C07C49/12—Ketones containing more than one keto group
- C07C49/14—Acetylacetone, i.e. 2,4-pentanedione
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/45—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by condensation
- C07C45/455—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by condensation with carboxylic acids or their derivatives
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Acetyl acetone is produced by the reaction of acetone, ethylacetate and an alkali alcoholate at a raised temperature, in which acetone, preferably together with ethyl acetate, is gradually added to a mixture of an alkali alcoholate and ethyl acetate, and, as soon as the temperature reaches the boiling point the alcohol is distilled together with acetone so that a mixture of alcohol, ethyl acetate and a small quantity of acetone passes over, while an alkali acetylacetone and, when present, an alkali ethyl aceto-acetate remains behind. The reaction is preferably commenced at a temperature of 30-50 DEG C. with the introduction of part of the acetone. Only small amounts of by-products such as mesityl oxide, acetyl-mesityl oxide and the like are formed. The process may be conducted under superatmospheric pressure and/or a solvent may be added. Methyl acetate may be used instead of ethyl acetate. In the examples, a mixture of acetone and ethyl acetate was gradually added to a mixture of sodium alcoholate and ethyl acetate to give a mixture of sodium acetyl-acetone and sodium ethyl aceto-acetate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE681196X | 1948-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB681196A true GB681196A (en) | 1952-10-22 |
Family
ID=6596646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32982/49A Expired GB681196A (en) | 1948-12-24 | 1949-12-23 | Manufacture of acetyl-acetone |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB681196A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0728517A2 (en) * | 1995-02-21 | 1996-08-28 | Hüls Aktiengesellschaft | Process for preparing keto compounds |
-
1949
- 1949-12-23 GB GB32982/49A patent/GB681196A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0728517A2 (en) * | 1995-02-21 | 1996-08-28 | Hüls Aktiengesellschaft | Process for preparing keto compounds |
| EP0728517A3 (en) * | 1995-02-21 | 1997-02-26 | Huels Chemische Werke Ag | Process for preparing keto compounds |
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