JPS5553239A - Preparation of 2,4-dichlorobenzoic acid - Google Patents
Preparation of 2,4-dichlorobenzoic acidInfo
- Publication number
- JPS5553239A JPS5553239A JP12519178A JP12519178A JPS5553239A JP S5553239 A JPS5553239 A JP S5553239A JP 12519178 A JP12519178 A JP 12519178A JP 12519178 A JP12519178 A JP 12519178A JP S5553239 A JPS5553239 A JP S5553239A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- dichlorotoluene
- dichlorobenzoic acid
- contained
- liquid
- 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
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
PURPOSE: To obtain 2,4-dichlorobenzoic acid useful as an intermediate for agricultural chemicals, medicines, etc., in high yield and high purity, industrially, by the liquid-phase oxidation of 2,4-dichlorotoluene using a catalyst containing cobalt, manganese and bromine.
CONSTITUTION: 2,4-Dichlorobenzoic acid is obtained in high purity and high yield, by the liquid-phase oxidation of 2,4-dichlorotoluene with a gas containing molecular oxygen, such as pure oxygen or air, in a lower fatty acid such as acetic acid, or its anhydride, preferably at 100W220°C, especially at 130W200°C, in the presence of a catalyst containing CO, Mn and Br, wherein at least one of the CO and Mn is contained as a bromide and the other is contained as a salt of an organic acid, such as acetic acid, or as a complex salt, such as an acetylacetonate. The preferable ratios of Co:Mn:Br are 1:0.1W3, especially 0.3W2:2W15 (weight ratio). The amount of the catalyst used is preferably 0.05W3wt% based on 2,4-dichlorotoluene.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12519178A JPS5553239A (en) | 1978-10-13 | 1978-10-13 | Preparation of 2,4-dichlorobenzoic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12519178A JPS5553239A (en) | 1978-10-13 | 1978-10-13 | Preparation of 2,4-dichlorobenzoic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5553239A true JPS5553239A (en) | 1980-04-18 |
Family
ID=14904161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12519178A Pending JPS5553239A (en) | 1978-10-13 | 1978-10-13 | Preparation of 2,4-dichlorobenzoic acid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5553239A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5927850A (en) * | 1982-08-06 | 1984-02-14 | Nippon Kayaku Co Ltd | Preparation of fluorobenzoic acid |
-
1978
- 1978-10-13 JP JP12519178A patent/JPS5553239A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5927850A (en) * | 1982-08-06 | 1984-02-14 | Nippon Kayaku Co Ltd | Preparation of fluorobenzoic acid |
| JPH051252B2 (en) * | 1982-08-06 | 1993-01-07 | Nippon Kayaku Kk |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1489547A (en) | Process for producing terephthalic acid | |
| JPS5470235A (en) | Preparation of terephthalic acid | |
| JPS5295609A (en) | Preparation of methacrylic acid | |
| JPS5553239A (en) | Preparation of 2,4-dichlorobenzoic acid | |
| JPS535132A (en) | Preparation of benzaldehyde | |
| ES463559A1 (en) | Process for preparing terephthalic acid | |
| JPS5382720A (en) | Preparation of unsaturated carboxylic acids and their esters | |
| JPS5291835A (en) | Prepation of terephtalic acid for direct polymerization | |
| JPS55153747A (en) | Preparation of biphenyltetracarboxylic acid ester | |
| JPS5466644A (en) | Preparation of terephthalic acid | |
| ES363114A1 (en) | Preparation of terephthalic acid | |
| JPS5716831A (en) | Preparation of biphenyldicarboxylic acid | |
| SE7908072L (en) | PROCEDURE FOR THE PREPARATION OF TERPHALIC ACID | |
| JPS5657723A (en) | Preparation of m-phenoxybenzyl alcohol and/or m-phenoxybenzaldehyde | |
| JPS5543058A (en) | Production of organic peracid | |
| JPS54109941A (en) | Preparation of m-hydroxybenzoic acid or its derivative | |
| JPS5359619A (en) | Preparation of dichloromaleic anhydride | |
| JPS5446737A (en) | Preparation of high-grade terephthalic acid | |
| JPS57203032A (en) | Preparation of naphthalenedicarboxylic acid | |
| SU982319A1 (en) | Method of synthesis of di= or tricarboxylic acids | |
| JPS5646844A (en) | Preparation of biphenyltetracarboxylic acid ester | |
| JPS532424A (en) | Preparation of p-xylene | |
| JPS5683486A (en) | Preparation of 1,3-benzodioxol-5-ol | |
| JPS55127327A (en) | Simultaneous preparation of substituted benzaldehyde and benzoic acid | |
| JPS554325A (en) | Preparation of phenyl acetate and ketone |