JPS6447735A - Production of 2,3-naphthalenedicarboxylic acid - Google Patents
Production of 2,3-naphthalenedicarboxylic acidInfo
- Publication number
- JPS6447735A JPS6447735A JP20290887A JP20290887A JPS6447735A JP S6447735 A JPS6447735 A JP S6447735A JP 20290887 A JP20290887 A JP 20290887A JP 20290887 A JP20290887 A JP 20290887A JP S6447735 A JPS6447735 A JP S6447735A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- acyl group
- acylating
- group
- alkyltetralin
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE:To improve yield in obtaining the titled compound useful as a synthetic raw material for weather-resistant pigment by acylating a 6-alkyltetralin, dehydrogenating and oxidizing, by hydrogenating an acyl group introduced in acylating process before oxidizing process to completely convert the acyl group to a hydroxyalkyl group and/or an alkyl group. CONSTITUTION:A 6-alkyltetralin is acylated in the presence of Friedel-Crafts catalyst and then the reaction product is dehydrogenated. In the operation, before or after the dehydrogenating process or simultaneously in dehydrogenation, an acyl group introduced in the acylating process is hydrogenated and stabilized. The hydrogenation is carried out in the presence or absence of an alcohol solvent by using a noble metallic catalyst such as platinum at normal temperature - 250 deg.C under 5-100kg/cm<2> hydrogen pressure so that the acyl group is substantially completely converted into a hydroxyalkyl group and/or an alkyl group. Then the resulting substance is oxidized, preferably in a gas phase to give the aimed compound. A catalyst of hydrogen fluoride/boron trifluoride type is preferable as the catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20290887A JPS6447735A (en) | 1987-08-14 | 1987-08-14 | Production of 2,3-naphthalenedicarboxylic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20290887A JPS6447735A (en) | 1987-08-14 | 1987-08-14 | Production of 2,3-naphthalenedicarboxylic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6447735A true JPS6447735A (en) | 1989-02-22 |
Family
ID=16465169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20290887A Pending JPS6447735A (en) | 1987-08-14 | 1987-08-14 | Production of 2,3-naphthalenedicarboxylic acid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6447735A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008232395A (en) * | 2007-03-23 | 2008-10-02 | Inoac Corp | Roller shaft |
| CN106748752A (en) * | 2017-01-22 | 2017-05-31 | 河北凡克化工有限公司 | A kind of preparation method of 2,3 naphthalenedicarboxylic acid |
-
1987
- 1987-08-14 JP JP20290887A patent/JPS6447735A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008232395A (en) * | 2007-03-23 | 2008-10-02 | Inoac Corp | Roller shaft |
| CN106748752A (en) * | 2017-01-22 | 2017-05-31 | 河北凡克化工有限公司 | A kind of preparation method of 2,3 naphthalenedicarboxylic acid |
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