JPS57185238A - Preparation of p-nitrobenzoic acid - Google Patents
Preparation of p-nitrobenzoic acidInfo
- Publication number
- JPS57185238A JPS57185238A JP56067644A JP6764481A JPS57185238A JP S57185238 A JPS57185238 A JP S57185238A JP 56067644 A JP56067644 A JP 56067644A JP 6764481 A JP6764481 A JP 6764481A JP S57185238 A JPS57185238 A JP S57185238A
- Authority
- JP
- Japan
- Prior art keywords
- nitrotoluene
- give
- acetic acid
- nitrobenzoic acid
- solution
- 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
- OTLNPYWUJOZPPA-UHFFFAOYSA-N 4-nitrobenzoic acid Chemical compound OC(=O)C1=CC=C([N+]([O-])=O)C=C1 OTLNPYWUJOZPPA-UHFFFAOYSA-N 0.000 title abstract 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 9
- 238000006243 chemical reaction Methods 0.000 abstract 5
- ZPTVNYMJQHSSEA-UHFFFAOYSA-N 4-nitrotoluene Chemical compound CC1=CC=C([N+]([O-])=O)C=C1 ZPTVNYMJQHSSEA-UHFFFAOYSA-N 0.000 abstract 3
- 239000003054 catalyst Substances 0.000 abstract 2
- 239000007795 chemical reaction product Substances 0.000 abstract 2
- 239000002994 raw material Substances 0.000 abstract 2
- 239000003905 agrochemical Substances 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000003814 drug Substances 0.000 abstract 1
- 229940079593 drug Drugs 0.000 abstract 1
- 239000000975 dye Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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 obtain the titled compound, by reacting p-nitrotoluene with O2 gas in the presence of a specific amount of acetic acid and a Co-Mn-Br catalyst at a relatively low temperature to give a specified conversion, concentrating the reaction product solution, and circulating the concentrated solution through the reaction system.
CONSTITUTION: p-Nitrotoluene is oxidized with O2 gas to give p-nitrobenzoic acid. In the process, a catalyst containing Co, Mn and Br essentially is used, and the reaction is carried out at 120W190°C, preferably 140W180°C, in the presence of acetic acid in an amount of 0.2W1.3wt%, preferably 0.3W0.8wt%, based on the raw material to give a conversion of the p-nitrotoluene in the range of 10W70%. The resultant reaction product solution is then concentrated before or after the separation of the formed p-nitrobenzoic acid to distill off a mixture of the formed water with the acetic acid, and the remaining solution is circulated through the reaction system.
EFFECT: Economical with good yield.
USE: A raw material for agricultural chemicals, medicines, dyes, resins, etc.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56067644A JPS57185238A (en) | 1981-05-07 | 1981-05-07 | Preparation of p-nitrobenzoic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56067644A JPS57185238A (en) | 1981-05-07 | 1981-05-07 | Preparation of p-nitrobenzoic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57185238A true JPS57185238A (en) | 1982-11-15 |
Family
ID=13350920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56067644A Pending JPS57185238A (en) | 1981-05-07 | 1981-05-07 | Preparation of p-nitrobenzoic acid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57185238A (en) |
-
1981
- 1981-05-07 JP JP56067644A patent/JPS57185238A/en active Pending
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