JPS56133227A - Preparation of phenylacetylene - Google Patents
Preparation of phenylacetyleneInfo
- Publication number
- JPS56133227A JPS56133227A JP3716680A JP3716680A JPS56133227A JP S56133227 A JPS56133227 A JP S56133227A JP 3716680 A JP3716680 A JP 3716680A JP 3716680 A JP3716680 A JP 3716680A JP S56133227 A JPS56133227 A JP S56133227A
- Authority
- JP
- Japan
- Prior art keywords
- chlorostyrene
- quaternary ammonium
- ammonium salt
- phase transfer
- transfer catalyst
- 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.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain the titled compound useful as an intermediate for organic synthetic chemicals inexpensively and readily by the intramolecular dehydrochlorination of an α,β-dichloroethylbenzene or β-chlorostyrene, in an aqueous alkali in the presence of a phase transfer catalyst.
CONSTITUTION: An α,β-dichloroethylene expressed by formula I (A is alkyl, alkoxyl, OH or halogen; n is 0W5), a β-chlorostyrene of formula III or their mixture is intermlocularly dehydrochlorinated in an aqueous alkali, e.g. a hydroxide of an alkali metal or an alkaline earth metal, etc., in a concentration of 30W60wt% in the presence of a phase transfer catalyst, e.g. a quaternary ammonium salt, at 50W 100°C, for 2W7hr under ordinary pressure, to give phenylacetylene. Benzyltrimethylammonium chloride, tetrabutylammonium chloride, etc., may be cited as the quaternary ammonium salt.
USE: A useful monomer for polymerization having a special feature in optical characteristics, etc.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3716680A JPS56133227A (en) | 1980-03-24 | 1980-03-24 | Preparation of phenylacetylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3716680A JPS56133227A (en) | 1980-03-24 | 1980-03-24 | Preparation of phenylacetylene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56133227A true JPS56133227A (en) | 1981-10-19 |
Family
ID=12490005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3716680A Pending JPS56133227A (en) | 1980-03-24 | 1980-03-24 | Preparation of phenylacetylene |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56133227A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114181028A (en) * | 2021-12-21 | 2022-03-15 | 山东博苑医药化学股份有限公司 | Preparation method of phenylacetylene |
-
1980
- 1980-03-24 JP JP3716680A patent/JPS56133227A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114181028A (en) * | 2021-12-21 | 2022-03-15 | 山东博苑医药化学股份有限公司 | Preparation method of phenylacetylene |
| CN114181028B (en) * | 2021-12-21 | 2023-10-24 | 山东博苑医药化学股份有限公司 | Preparation method of phenylacetylene |
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