GB777141A - Improvements in or relating to the preparation of 1-alkynes - Google Patents
Improvements in or relating to the preparation of 1-alkynesInfo
- Publication number
- GB777141A GB777141A GB3245754A GB3245754A GB777141A GB 777141 A GB777141 A GB 777141A GB 3245754 A GB3245754 A GB 3245754A GB 3245754 A GB3245754 A GB 3245754A GB 777141 A GB777141 A GB 777141A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkali metal
- per cent
- solution
- caustic soda
- metal alkoxide
- 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
- C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
- C07C1/26—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only halogen atoms as hetero-atoms
- C07C1/30—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only halogen atoms as hetero-atoms by splitting-off the elements of hydrogen halide from a single molecule
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The process of the parent Specification for the manufacture of a 1-alkyne by the continuous treatment of a 1,2 dihaloalkane or a 1- or 2-mono-haloalkene in a boiling solution of an alkali metal alkoxide of an alcohol boiling above 100 DEG C. is modified by maintaining the solution throughout the reaction at least 50 per cent saturated with the alkali metal alkoxide, whilst ensuring that the amount of alkali metal halide present in the solution is never in excess of the amount chemically equivalent to that quantity of alkali metal alkoxide which would 50 per cent saturate the solution. The process may be carried out in a continuous manner or as a batch process. In a preferred process, 6 Kgs. of ethoxyethoxyethanol was heated to 170 DEG C. and then caustic soda added until 56 per cent saturation was reached. 1.13 Kgs. of dichloropropane was then fed to the vessl over 5 1/2 hours during which time sodium chloride was continuously filtered off from the solvent and caustic soda added, the caustic soda content rose to 72 per cent saturation. 256 grams of propyne and 7 grams of allene were formed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3245754A GB777141A (en) | 1954-11-09 | 1954-11-09 | Improvements in or relating to the preparation of 1-alkynes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3245754A GB777141A (en) | 1954-11-09 | 1954-11-09 | Improvements in or relating to the preparation of 1-alkynes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB777141A true GB777141A (en) | 1957-06-19 |
Family
ID=10338896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3245754A Expired GB777141A (en) | 1954-11-09 | 1954-11-09 | Improvements in or relating to the preparation of 1-alkynes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB777141A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3154591A (en) * | 1958-12-19 | 1964-10-27 | Hooker Chemical Corp | Preparation of 1, 4, 5, 6, 7, 7-hexachloro-2-ethynylbicyclo-(2. 2. 1)-heptene-5 |
DE2251651A1 (en) * | 1971-10-21 | 1973-04-26 | Sherwin Williams Co | PRODUCTION OF ALKINES BY DEHYDROHALOGENATION |
-
1954
- 1954-11-09 GB GB3245754A patent/GB777141A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3154591A (en) * | 1958-12-19 | 1964-10-27 | Hooker Chemical Corp | Preparation of 1, 4, 5, 6, 7, 7-hexachloro-2-ethynylbicyclo-(2. 2. 1)-heptene-5 |
DE2251651A1 (en) * | 1971-10-21 | 1973-04-26 | Sherwin Williams Co | PRODUCTION OF ALKINES BY DEHYDROHALOGENATION |
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