GB378676A - Improved manufacture of 1 : 6-dibromo-2-hydroxy-naphthalene-3-carboxylic acid - Google Patents
Improved manufacture of 1 : 6-dibromo-2-hydroxy-naphthalene-3-carboxylic acidInfo
- Publication number
- GB378676A GB378676A GB2607631A GB2607631A GB378676A GB 378676 A GB378676 A GB 378676A GB 2607631 A GB2607631 A GB 2607631A GB 2607631 A GB2607631 A GB 2607631A GB 378676 A GB378676 A GB 378676A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carboxylic acid
- dibromo
- sulphuric acid
- naphthalene
- hydroxy
- 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
- C07C65/00—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups
- C07C65/01—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups containing hydroxy or O-metal groups
- C07C65/105—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups containing hydroxy or O-metal groups polycyclic
- C07C65/11—Compounds having carboxyl groups bound to carbon atoms of six—membered aromatic rings and containing any of the groups OH, O—metal, —CHO, keto, ether, groups, groups, or groups containing hydroxy or O-metal groups polycyclic with carboxyl groups on a condensed ring system containing two rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1 : 6-Dibromo-2-hydroxynaphthalene-3-carboxylic acid is prepared by dissolving 2-hydroxynaphthalene-3-carboxylic acid in sulphuric acid, adding to the solution two atomic proportions of bromine, introducing into fuming sulphuric acid the hydrogen bromide evolved and adding the fuming sulphuric acid thus treated to the sulphuric acid solution. Alternatively a small excess over two atomic proportions of bromine may be added to the sulphuric acid solution and the bromination finished by increasing the temperature.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2607631A GB378676A (en) | 1931-09-17 | 1931-09-17 | Improved manufacture of 1 : 6-dibromo-2-hydroxy-naphthalene-3-carboxylic acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2607631A GB378676A (en) | 1931-09-17 | 1931-09-17 | Improved manufacture of 1 : 6-dibromo-2-hydroxy-naphthalene-3-carboxylic acid |
Publications (1)
Publication Number | Publication Date |
---|---|
GB378676A true GB378676A (en) | 1932-08-18 |
Family
ID=10237959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2607631A Expired GB378676A (en) | 1931-09-17 | 1931-09-17 | Improved manufacture of 1 : 6-dibromo-2-hydroxy-naphthalene-3-carboxylic acid |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB378676A (en) |
-
1931
- 1931-09-17 GB GB2607631A patent/GB378676A/en not_active Expired
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