GB362906A - Manufacture of derivatives of naphthalene-1:4:5:8-tetracarboxylic acid - Google Patents
Manufacture of derivatives of naphthalene-1:4:5:8-tetracarboxylic acidInfo
- Publication number
- GB362906A GB362906A GB2678530A GB2678530A GB362906A GB 362906 A GB362906 A GB 362906A GB 2678530 A GB2678530 A GB 2678530A GB 2678530 A GB2678530 A GB 2678530A GB 362906 A GB362906 A GB 362906A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dicarboxylic acid
- obtainable
- naphthalene
- dichloronaphthalene
- acid
- 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
Abstract
Di-imides of 1 : 4 : 5 : 8-naphthalene tetracarboxylic acid are obtained by causing a metal cyanide to react with a naphthalene-1 : 4- or 1 : 5-dicarboxylic acid substituted in the free a - positions by halogen, or with a reactive derivative such as an amide, nitrile, salt or ester thereof. According to examples, (1) 5 : 8-dichloronaphthalene-1 : 4-dicarboxylic acid, obtainable by chlorinating, followed by hydrolysing, 1 : 4-dicyanonaphthalene, (2) 4 : 8 - dichloronaphthalene - 1 : 5 - dicarboxylic acid, obtainable by causing chloracetylchloride to react with 1 : 5-dichloronaphthalene and oxidizing the product, (3) 5 : 8-dibromonaphthalene-1 : 4-dicarboxylic acid (obtainable by brominating the dicarboxylic acid), (4) 5 : 8 - dichloro - 1 : 4 - di - cyanonaphthalene (obtainable by chlorinating the dicyanide), (5) the corresponding acid diamide or diethyl ester, are treated with alkali and cuprous cyanides to give the di-imide and (6) the parent material of example (3) gives the same product on treatment with cuprous cyanide in benzyl cyanide. The free naphthalene tetracarboxylic acid is obtained also in some cases. The intermediate dicyano-dicarboxylic acids and diamides need not be isolated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2678530A GB362906A (en) | 1930-09-08 | 1930-09-08 | Manufacture of derivatives of naphthalene-1:4:5:8-tetracarboxylic acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2678530A GB362906A (en) | 1930-09-08 | 1930-09-08 | Manufacture of derivatives of naphthalene-1:4:5:8-tetracarboxylic acid |
Publications (1)
Publication Number | Publication Date |
---|---|
GB362906A true GB362906A (en) | 1931-12-08 |
Family
ID=10249149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2678530A Expired GB362906A (en) | 1930-09-08 | 1930-09-08 | Manufacture of derivatives of naphthalene-1:4:5:8-tetracarboxylic acid |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB362906A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3544303A (en) * | 1968-04-03 | 1970-12-01 | Stanford Research Inst | Aromatic carboximides as herbicides |
CN112778116A (en) * | 2020-12-30 | 2021-05-11 | 湖北鸿鑫化工有限公司 | Preparation method of 1,4-naphthalenedicarboxylic acid |
-
1930
- 1930-09-08 GB GB2678530A patent/GB362906A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3544303A (en) * | 1968-04-03 | 1970-12-01 | Stanford Research Inst | Aromatic carboximides as herbicides |
CN112778116A (en) * | 2020-12-30 | 2021-05-11 | 湖北鸿鑫化工有限公司 | Preparation method of 1,4-naphthalenedicarboxylic acid |
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