GB1061464A - Process for the production of alpha-monohalogenated aldehydes - Google Patents
Process for the production of alpha-monohalogenated aldehydesInfo
- Publication number
- GB1061464A GB1061464A GB2411464A GB2411464A GB1061464A GB 1061464 A GB1061464 A GB 1061464A GB 2411464 A GB2411464 A GB 2411464A GB 2411464 A GB2411464 A GB 2411464A GB 1061464 A GB1061464 A GB 1061464A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydrogen
- chx
- atmospheres
- carbon monoxide
- monohalogenated
- 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
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/49—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reaction with carbon monoxide
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Compounds of the formula R1R11CH.CHX.CHO, in which R1 and R11 is hydrogen, alkyl or aryl and X is halogen, are prepared by reacting R1R11C=CHX at 75-140 DEG C. under a pressure of at least 65 atmospheres with a mixture of hydrogen and carbon monoxide in a ratio by volume of 0.4 to 7, in the presence of at least 1 mol. per cent, based on halo-olefine, of a cobalt carbonyl catalyst, the minimum partial pressures of carbon monoxide and hydrogen being 40 and 25 atmospheres respectively. Examples prepare 2-chloropropionaldehyde, 2-bromobutyraldehyde and a -chlorohydrocinnamaldehyde from vinyl chloride, 1-bromopropene-1, and o -chlorostyrene respectively. Other products are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH729863A CH414586A (en) | 1963-06-12 | 1963-06-12 | Process for the preparation of α-monohalogenated aldehydes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1061464A true GB1061464A (en) | 1967-03-15 |
Family
ID=4322937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2411464A Expired GB1061464A (en) | 1963-06-12 | 1964-06-10 | Process for the production of alpha-monohalogenated aldehydes |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH414586A (en) |
| DE (1) | DE1220405B (en) |
| GB (1) | GB1061464A (en) |
| NL (1) | NL6406299A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116621687A (en) * | 2023-07-21 | 2023-08-22 | 山东国邦药业有限公司 | Preparation method of difluoro acetic acid |
-
1963
- 1963-06-12 CH CH729863A patent/CH414586A/en unknown
-
1964
- 1964-06-04 NL NL6406299A patent/NL6406299A/xx unknown
- 1964-06-06 DE DEL47980A patent/DE1220405B/en active Pending
- 1964-06-10 GB GB2411464A patent/GB1061464A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116621687A (en) * | 2023-07-21 | 2023-08-22 | 山东国邦药业有限公司 | Preparation method of difluoro acetic acid |
| CN116621687B (en) * | 2023-07-21 | 2023-10-27 | 山东国邦药业有限公司 | Preparation method of difluoro acetic acid |
Also Published As
| Publication number | Publication date |
|---|---|
| NL6406299A (en) | 1964-12-14 |
| CH414586A (en) | 1966-06-15 |
| DE1220405B (en) | 1966-07-07 |
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