GB762572A - Process for the manufacture of acetoacetic acid esters - Google Patents
Process for the manufacture of acetoacetic acid estersInfo
- Publication number
- GB762572A GB762572A GB899/53A GB89953A GB762572A GB 762572 A GB762572 A GB 762572A GB 899/53 A GB899/53 A GB 899/53A GB 89953 A GB89953 A GB 89953A GB 762572 A GB762572 A GB 762572A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diketene
- alcohol
- manufacture
- acid esters
- acetoacetic acid
- 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
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/66—Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety
- C07C69/67—Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of saturated acids
- C07C69/716—Esters of keto-carboxylic acids or aldehydo-carboxylic acids
- C07C69/72—Acetoacetic acid esters
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
In a process for the manufacture of acetoacetic acid esters by the reaction of diketene with an alcohol in the presence of a catalyst of alkaline reaction, the diketene is gradually added to the alcohol at the boiling temperature of the reaction mixture, at a rate such that the mixture is maintained at the boil. In an example diketene is gradually added to a solution of sodium ethylate in methyl alcohol under reflux to obtain methyl acetoacetate. Ethyl acetoacetate may be similarly obtained using ethyl alcohol. Sodium acetate or an organic tertiary amine can also be used as catalyst. Crude diketene containing small amounts of acetic anhydride and higher ketene polymers may be employed as starting materials.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE762572X | 1952-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB762572A true GB762572A (en) | 1956-11-28 |
Family
ID=6668360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB899/53A Expired GB762572A (en) | 1952-01-11 | 1953-01-12 | Process for the manufacture of acetoacetic acid esters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB762572A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100445262C (en) * | 2007-04-13 | 2008-12-24 | 中国科学院山西煤炭化学研究所 | Method for synthesizing methyl acetoacetate methyl-carbonate and acetone |
-
1953
- 1953-01-12 GB GB899/53A patent/GB762572A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100445262C (en) * | 2007-04-13 | 2008-12-24 | 中国科学院山西煤炭化学研究所 | Method for synthesizing methyl acetoacetate methyl-carbonate and acetone |
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