GB1188928A - Preparation of Phthalic Acids. - Google Patents
Preparation of Phthalic Acids.Info
- Publication number
- GB1188928A GB1188928A GB9792/69A GB979269A GB1188928A GB 1188928 A GB1188928 A GB 1188928A GB 9792/69 A GB9792/69 A GB 9792/69A GB 979269 A GB979269 A GB 979269A GB 1188928 A GB1188928 A GB 1188928A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- carbomethoxy
- isophthalic
- feb
- reaction mixture
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
- C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
- C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
- C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
1,188,928. Phthalic acids. E.I. DU FONT DE NEMOURS & CO. 24 Feb., 1969 [23 Feb., 1968], No. 9792/69. Heading C2C. Isophthalic and terephthalic acid optionally substituted are prepared by oxidizing at least one methyl-substituted benzene selected from m- and p-xylene and m- and p-tolualdehyde, each of which may be optionally substituted by, e.g., chlorine or fluorine atoms or carbomethoxy groups in solution in one or more aliphatic monocarboxylic acids, e.g. acetic acid and in the presence of a cobalt-containing catalyst, e.g. cobalt acetate tetrahydrate, the reaction mixture being contacted under ambient atmospheric pressure with substantially pure molecular oxygen for at least five days while agitating the reaction mixture and maintaining its temperature at from 80-105 C. 2-chloroterephthalic acid, 4-carbomethoxy isophthalic acid, 3-fluoro-terephthalic acid and 5-carbomethoxy isophthalic acid may be prepared according to the process of the invention.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70740568A | 1968-02-23 | 1968-02-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1188928A true GB1188928A (en) | 1970-04-22 |
Family
ID=24841562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9792/69A Expired GB1188928A (en) | 1968-02-23 | 1969-02-24 | Preparation of Phthalic Acids. |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | UST861029I4 (en) |
| BE (1) | BE728749A (en) |
| DE (1) | DE1908787A1 (en) |
| FR (1) | FR2002471A1 (en) |
| GB (1) | GB1188928A (en) |
| NL (1) | NL6902768A (en) |
-
1968
- 1968-02-23 US US861029D patent/UST861029I4/en active Pending
-
1969
- 1969-02-20 FR FR6904297A patent/FR2002471A1/en not_active Withdrawn
- 1969-02-21 DE DE19691908787 patent/DE1908787A1/en active Pending
- 1969-02-21 NL NL6902768A patent/NL6902768A/xx unknown
- 1969-02-21 BE BE728749D patent/BE728749A/xx unknown
- 1969-02-24 GB GB9792/69A patent/GB1188928A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL6902768A (en) | 1969-08-26 |
| BE728749A (en) | 1969-08-01 |
| DE1908787A1 (en) | 1969-09-25 |
| UST861029I4 (en) | 1969-04-15 |
| FR2002471A1 (en) | 1969-10-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CSNS | Application of which complete specification have been accepted and published, but patent is not sealed |