GB539163A - Improvements in or relating to the production of halogenated organic compounds - Google Patents
Improvements in or relating to the production of halogenated organic compoundsInfo
- Publication number
- GB539163A GB539163A GB440740A GB440740A GB539163A GB 539163 A GB539163 A GB 539163A GB 440740 A GB440740 A GB 440740A GB 440740 A GB440740 A GB 440740A GB 539163 A GB539163 A GB 539163A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ketene
- ether
- alkoxyacidyl
- diketene
- cocl
- 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
- C07C51/58—Preparation of carboxylic acid halides
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
539,163. Alkoxyacidyl halides. DISTILLERS CO., Ltd., STAUDINGER, J. J. P., and TUERCK, K. H. W. March 8,1940, No. 4407. [Class 2 (iii)] Ketene, diketene and other ketene polymers and ketene derivatives such as ketene acetals are condensed with an α-halogen aliphatic ether in the presence of a condensing agent and if desired of a diluent, the product being an alkoxyacidyl halide. Suitable condensing agents are metal halides such as zinc, aluminium and mercuric chlorides, and suitable diluents are carbon disulphide, cyclohexane and ethers such as di-isopropyl ether. When a diluent is used the reactants or one of them, and the catalyst may be added in portions. In an example, ketene diluted with methane is led into chloro-dimethyl ether containing aluminium chloride at 50‹C. for 4 hours ; ethyl alcohol is added and the mixture is allowed to stand ; after distilling off the excess ether and alcohol the residue yields ethyl-#-methoxy propionate which when heated with a dehydrating catalyst yields the corresponding acrylic ester, a similar reaction occurring with the free acids. When diketene is used as initial material the product is CH 3 -OCH 2 -CH 2 -CO-CH 2 COCl or perhaps CH 3 -CO-CH-(CH 2 -O-CH 3 ) COCl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB440740A GB539163A (en) | 1940-03-08 | 1940-03-08 | Improvements in or relating to the production of halogenated organic compounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB440740A GB539163A (en) | 1940-03-08 | 1940-03-08 | Improvements in or relating to the production of halogenated organic compounds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB539163A true GB539163A (en) | 1941-08-29 |
Family
ID=9776611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB440740A Expired GB539163A (en) | 1940-03-08 | 1940-03-08 | Improvements in or relating to the production of halogenated organic compounds |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB539163A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0379691B2 (en) † | 1989-01-26 | 2001-01-03 | Mitsubishi Gas Chemical Company, Inc. | Process for preparing unsaturated carboxylic acid or ester thereof |
-
1940
- 1940-03-08 GB GB440740A patent/GB539163A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0379691B2 (en) † | 1989-01-26 | 2001-01-03 | Mitsubishi Gas Chemical Company, Inc. | Process for preparing unsaturated carboxylic acid or ester thereof |
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