GB1462317A - Process for the production of 2,6-naphthalene dicarboxylic acid dimethyl ester - Google Patents
Process for the production of 2,6-naphthalene dicarboxylic acid dimethyl esterInfo
- Publication number
- GB1462317A GB1462317A GB1227775A GB1227775A GB1462317A GB 1462317 A GB1462317 A GB 1462317A GB 1227775 A GB1227775 A GB 1227775A GB 1227775 A GB1227775 A GB 1227775A GB 1462317 A GB1462317 A GB 1462317A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dicarboxylic acid
- dimethyl ester
- naphthalene dicarboxylic
- acid dimethyl
- produce
- 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
1462317 2,6-Naphthalene dicarboxylic acid dimethyl ester DYNAMIT NOBEL AG 24 March 1975 [26 March 1974] 12277/75 Heading C2C A process for the production of 2,6-naphthalene dicarboxylic acid dimethyl ester comprises oxidizing 2,6-dimethyl naphthalene by means of a gas comprising molecular oxygen, in the presence of a solvent and a catalyst to produce a first oxidation product, esterifying the first oxidation product with methanol to produce a crude esterification product comprising 2,6- naphthalene dicarboxylic acid dimethyl ester and secondary products; separating the secondary products from the 2,6-naphthalene dicarboxylic acid dimethyl ester; oxidizing the secondary products by means of a gas comprising molecular oxygen, in the presence of a solvent and a catalyst to produce a second oxidation product; and esterifying the second oxidation product with methanol to produce further 2,6-naphthalene dicarboxylic acid dimethyl ester. In a preferred embodiment the process is carried out in acetic acid as solvent. Preferably the catalyst comprises a compound of cobalt and a compound of bromine, or it may be a compound containing bromine and cobalt.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742414363 DE2414363C3 (en) | 1974-03-26 | 1974-03-26 | Process for the preparation of dimethyl 2,6-naphthalenedicarboxylate |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1462317A true GB1462317A (en) | 1977-01-26 |
Family
ID=5911120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1227775A Expired GB1462317A (en) | 1974-03-26 | 1975-03-24 | Process for the production of 2,6-naphthalene dicarboxylic acid dimethyl ester |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS50142545A (en) |
DE (1) | DE2414363C3 (en) |
FR (1) | FR2265718B1 (en) |
GB (1) | GB1462317A (en) |
IT (1) | IT1029662B (en) |
NL (1) | NL7503622A (en) |
SU (1) | SU591135A3 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007213814A (en) * | 2006-02-07 | 2007-08-23 | Micro Denshi Kk | Microwave oscillation device |
-
1974
- 1974-03-26 DE DE19742414363 patent/DE2414363C3/en not_active Expired
-
1975
- 1975-02-07 IT IT4807275A patent/IT1029662B/en active
- 1975-02-20 JP JP2138575A patent/JPS50142545A/ja active Pending
- 1975-03-21 SU SU752116037A patent/SU591135A3/en active
- 1975-03-24 FR FR7509169A patent/FR2265718B1/fr not_active Expired
- 1975-03-24 GB GB1227775A patent/GB1462317A/en not_active Expired
- 1975-03-26 NL NL7503622A patent/NL7503622A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
DE2414363B2 (en) | 1979-02-01 |
IT1029662B (en) | 1979-03-20 |
DE2414363A1 (en) | 1975-10-16 |
JPS50142545A (en) | 1975-11-17 |
DE2414363C3 (en) | 1979-09-27 |
FR2265718B1 (en) | 1980-04-30 |
SU591135A3 (en) | 1978-01-30 |
NL7503622A (en) | 1975-09-30 |
FR2265718A1 (en) | 1975-10-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |