JPS5594323A - Preparation of 1,2,4-trisubstituted benzene - Google Patents
Preparation of 1,2,4-trisubstituted benzeneInfo
- Publication number
- JPS5594323A JPS5594323A JP20579A JP20579A JPS5594323A JP S5594323 A JPS5594323 A JP S5594323A JP 20579 A JP20579 A JP 20579A JP 20579 A JP20579 A JP 20579A JP S5594323 A JPS5594323 A JP S5594323A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- niobium pentachloride
- solvent
- reducing agent
- product
- 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
- -1 1,2,4-trisubstituted benzene Chemical class 0.000 title abstract 4
- 239000003054 catalyst Substances 0.000 abstract 5
- YHBDIEWMOMLKOO-UHFFFAOYSA-I pentachloroniobium Chemical compound Cl[Nb](Cl)(Cl)(Cl)Cl YHBDIEWMOMLKOO-UHFFFAOYSA-I 0.000 abstract 4
- UEXCJVNBTNXOEH-UHFFFAOYSA-N Ethynylbenzene Chemical group C#CC1=CC=CC=C1 UEXCJVNBTNXOEH-UHFFFAOYSA-N 0.000 abstract 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 abstract 2
- 239000003638 chemical reducing agent Substances 0.000 abstract 2
- 230000000694 effects Effects 0.000 abstract 2
- 150000008282 halocarbons Chemical class 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 239000002904 solvent Substances 0.000 abstract 2
- XXCVBOQRPQKVKY-UHFFFAOYSA-N 1,2,4-triphenylbenzene Chemical compound C1=CC=CC=C1C(C=C1C=2C=CC=CC=2)=CC=C1C1=CC=CC=C1 XXCVBOQRPQKVKY-UHFFFAOYSA-N 0.000 abstract 1
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- 125000003710 aryl alkyl group Chemical group 0.000 abstract 1
- 125000003118 aryl group Chemical group 0.000 abstract 1
- 239000006227 byproduct Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000000047 product Substances 0.000 abstract 1
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 prepare a 1,2,4-trisubstituted benzene in high selectivity, by trimerizing a monosubstituted acetylene in an aromatic hydrocarbon or a halogenated hydrocarbon at a relatively low temperature in the presence of niobium pentachloride or an aged mixture of niobium pentachloride and a reducing agent as a catalyst.
CONSTITUTION: A monosubstituted acetylene I (R is alkyl, aryl, or aralkyl) (e.g. phenylacetylene) is trimerized to give the product II (e.g. 1,2,4-triphenylbenzene) in a solvent comprising an aromatic hydrocarbon and/or a halogenated hydrocarbon having high dissolving power for the catalyst, at -50W60°C, in the presence of a catalyst comprising niobium pentachloride or an aged mixture of niobium pentachloride and a reducing agent. Preferably, the catalyst concentration is 2W20 mol/l and the amount of the compound I is 0.1W2.0mol/l, on the basis of the solvent.
EFFECT: The catalyst has high activity and gives a high conversion and a small amount of the by-product.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20579A JPS5594323A (en) | 1979-01-08 | 1979-01-08 | Preparation of 1,2,4-trisubstituted benzene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20579A JPS5594323A (en) | 1979-01-08 | 1979-01-08 | Preparation of 1,2,4-trisubstituted benzene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5594323A true JPS5594323A (en) | 1980-07-17 |
Family
ID=11467467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20579A Pending JPS5594323A (en) | 1979-01-08 | 1979-01-08 | Preparation of 1,2,4-trisubstituted benzene |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5594323A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990004578A1 (en) * | 1988-10-17 | 1990-05-03 | The Dow Chemical Company | A method of polymerizing alpha-omega diynes |
-
1979
- 1979-01-08 JP JP20579A patent/JPS5594323A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990004578A1 (en) * | 1988-10-17 | 1990-05-03 | The Dow Chemical Company | A method of polymerizing alpha-omega diynes |
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