GB880029A - Production of trans-1,4-dichlorobutene-2 - Google Patents
Production of trans-1,4-dichlorobutene-2Info
- Publication number
- GB880029A GB880029A GB39779/58A GB3977958A GB880029A GB 880029 A GB880029 A GB 880029A GB 39779/58 A GB39779/58 A GB 39779/58A GB 3977958 A GB3977958 A GB 3977958A GB 880029 A GB880029 A GB 880029A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dichlorobutene
- trans
- hydrochloric acid
- organic phase
- cuprous salt
- 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
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/35—Preparation of halogenated hydrocarbons by reactions not affecting the number of carbon or of halogen atoms in the reaction
- C07C17/358—Preparation of halogenated hydrocarbons by reactions not affecting the number of carbon or of halogen atoms in the reaction by isomerisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Trans-1,4-dichlorobutene-2 is prepared by contacting one or more of 3,4-dichlorobutaene-1 and cis-1,4-dichlorobutene-2 in an oxygen-free atmosphere with aqueous hydrochloric acid containing a cuprous salt, and separating from the resulting mixture the organic phase comprising trans-1,4-dichlorobutene-2. The initial reaction mixture may also contain trans-1,4-dichlorobutene-2, and may be that obtained by the chlorination of butadiene. The reaction temperature may be 25-100 DEG C, and the ratio by volume of the aqueous to the organic phase is preferably between 10 : 1 and 1 : 10. The cuprous salt may be the chloride, and the hydrochloric acid concentration in the isomerisation catalyst is preferably at least 10% by weight. The reaction product can be nitrilated to produce 1,4-dicyanobutene-2. Specifications 639,438, 646,964 and 646,965 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US880029XA | 1957-12-13 | 1957-12-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB880029A true GB880029A (en) | 1961-10-18 |
Family
ID=22208521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB39779/58A Expired GB880029A (en) | 1957-12-13 | 1958-12-10 | Production of trans-1,4-dichlorobutene-2 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB880029A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1918269A1 (en) * | 2006-10-27 | 2008-05-07 | Honeywell International Inc. | Processes for geometric isomerization of halogenated olefins |
-
1958
- 1958-12-10 GB GB39779/58A patent/GB880029A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1918269A1 (en) * | 2006-10-27 | 2008-05-07 | Honeywell International Inc. | Processes for geometric isomerization of halogenated olefins |
| US7709691B2 (en) | 2006-10-27 | 2010-05-04 | Honeywell International Inc. | Process for geometric isomerization of halogenated olefins |
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