JPS5756440A - Preparation of 2-hydroxynaphthalene-3-carboxylic acid - Google Patents
Preparation of 2-hydroxynaphthalene-3-carboxylic acidInfo
- Publication number
- JPS5756440A JPS5756440A JP13203380A JP13203380A JPS5756440A JP S5756440 A JPS5756440 A JP S5756440A JP 13203380 A JP13203380 A JP 13203380A JP 13203380 A JP13203380 A JP 13203380A JP S5756440 A JPS5756440 A JP S5756440A
- Authority
- JP
- Japan
- Prior art keywords
- pref
- naphthol
- liquid mixture
- polyalkylbenzene
- carbon dioxide
- 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 prepare the titled compound useful as an intermediate of dyes and pigments, by dehydrating a uniform liquid mixture of a β-naphthol alkali metal salt, β-naphthol, and a polyalkylbenzene under specific conditions keeping the liquid state, and then reacting wich carbon dioxide gas.
CONSTITUTION: A water-containing liquid mixture containing (A) an alkali metal salt of β-naphthol, (B) 0.6W1.25mols, pref. 0.7W1.0mol, based on 1mol of the component (A), of β-naphthol, and (C) 0.1W1.0pt.wt., pref. 0.3W0.8pt.wt., based on 1pt.wt. of the component (A), of a polyalkylbenzene of formula (R is different or same straight or branched chain 1W3C alkyl; n is 3W4), e.g. diisopropyltouene, is dehydrated with fractionating column pref. at 100W240°C, and the uniform anhydrous liquid mixture thus obtained is made to react with carbon dioxide gas to obtain the titled compound in high purity and yield (pref. the whole steps are carried out continuously).
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13203380A JPS5756440A (en) | 1980-09-22 | 1980-09-22 | Preparation of 2-hydroxynaphthalene-3-carboxylic acid |
ES497535A ES497535A0 (en) | 1979-12-25 | 1980-12-06 | PROCEDURE FOR PRODUCING ACID 2-HYDROXINAFTALEN-3-CARBOXI-LICO |
US06/218,973 US4297508A (en) | 1979-12-25 | 1980-12-22 | Process for producing 2 hydroxy-naphthalene-3-carboxylic acid |
DE19803048706 DE3048706A1 (en) | 1979-12-25 | 1980-12-23 | METHOD FOR PRODUCING 2-HYDROXYNAPHTHALINE-3-CARBONIC ACID |
IT50446/80A IT1188978B (en) | 1979-12-25 | 1980-12-23 | PROCEDURE FOR PRODUCING 2-HYDROXY-NAFTALIN-3-CARBOXYLIC ACID |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13203380A JPS5756440A (en) | 1980-09-22 | 1980-09-22 | Preparation of 2-hydroxynaphthalene-3-carboxylic acid |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5756440A true JPS5756440A (en) | 1982-04-05 |
Family
ID=15071921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13203380A Pending JPS5756440A (en) | 1979-12-25 | 1980-09-22 | Preparation of 2-hydroxynaphthalene-3-carboxylic acid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5756440A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63165341A (en) * | 1986-12-27 | 1988-07-08 | Honsyu Kagaku Kogyo Kk | Production of 3,5-dialkylsalicylic acid |
JPH0716796A (en) * | 1993-07-05 | 1995-01-20 | Sugawara Seiki Kk | Die mechanism for rotary type powder press molding device |
JP2009173563A (en) * | 2008-01-22 | 2009-08-06 | Chiba Inst Of Technology | Process for producing aromatic hydroxycarboxylic acid |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS622579A (en) * | 1985-06-28 | 1987-01-08 | Toshiba Corp | Discharge type gas laser device |
-
1980
- 1980-09-22 JP JP13203380A patent/JPS5756440A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS622579A (en) * | 1985-06-28 | 1987-01-08 | Toshiba Corp | Discharge type gas laser device |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63165341A (en) * | 1986-12-27 | 1988-07-08 | Honsyu Kagaku Kogyo Kk | Production of 3,5-dialkylsalicylic acid |
JPH0716796A (en) * | 1993-07-05 | 1995-01-20 | Sugawara Seiki Kk | Die mechanism for rotary type powder press molding device |
JP2009173563A (en) * | 2008-01-22 | 2009-08-06 | Chiba Inst Of Technology | Process for producing aromatic hydroxycarboxylic acid |
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