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 acid

Info

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
Application number
GB2607631A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB2607631A priority Critical patent/GB378676A/en
Publication of GB378676A publication Critical patent/GB378676A/en
Expired legal-status Critical Current

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.
GB2607631A 1931-09-17 1931-09-17 Improved manufacture of 1 : 6-dibromo-2-hydroxy-naphthalene-3-carboxylic acid Expired GB378676A (en)

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)

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