GB573763A - Improvements in or relating to the manufacture of halogenated organic acids - Google Patents
Improvements in or relating to the manufacture of halogenated organic acidsInfo
- Publication number
- GB573763A GB573763A GB481841A GB481841A GB573763A GB 573763 A GB573763 A GB 573763A GB 481841 A GB481841 A GB 481841A GB 481841 A GB481841 A GB 481841A GB 573763 A GB573763 A GB 573763A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solvent
- aldehyde
- hydrochloric acid
- chlor
- oxidation
- 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
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
- C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
- C07C51/25—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Unsaturated a -chlor acids are made by oxidation with molecular oxygen of a -chlor a -b -unsaturated aldehydes at temperatures below 100 DEG C. Preferably the aldehyde is in solution in a solvent and the quantity of aldehyde present in the solvent at any time should be small, which may be effected by adding the aldehyde intermittently in portions or continuously. An oxygen-carrying catalyst such as a compound of copper, manganese, cobalt, nickel, vanadium, iron, chromium, uranium, tungsten or molybdenum may be employed. If the solvent is an alcohol, the product is the corresponding ester. Some hydrochloric acid is evolved in the reaction, and to prevent this adding on to the aldehyde, water may be added or the hydrochloric acid may be carried off by excess of the oxidizing gas, or the catalyst may be a carboxylate which reacts with hydrochloric acid. Examples describe the oxidation of a -chloracrolein and a -chlorcrotonaldehyde, in one case ethyl alcohol being present to produce ethyl a -chloracrylate. Solvents specified in the examples are acetone and acetic acid, but in one case no solvent is used, the temperature being 10-20 DEG C. Specifications 514,619, 560,166 and 573,723 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB481841A GB573763A (en) | 1941-04-10 | 1941-04-10 | Improvements in or relating to the manufacture of halogenated organic acids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB481841A GB573763A (en) | 1941-04-10 | 1941-04-10 | Improvements in or relating to the manufacture of halogenated organic acids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB573763A true GB573763A (en) | 1945-12-06 |
Family
ID=9784375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB481841A Expired GB573763A (en) | 1941-04-10 | 1941-04-10 | Improvements in or relating to the manufacture of halogenated organic acids |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB573763A (en) |
-
1941
- 1941-04-10 GB GB481841A patent/GB573763A/en not_active Expired
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