GB869505A - Process for the preparation of cyclic di-and tri-carboxylic acids - Google Patents

Process for the preparation of cyclic di-and tri-carboxylic acids

Info

Publication number
GB869505A
GB869505A GB7789/59A GB778959A GB869505A GB 869505 A GB869505 A GB 869505A GB 7789/59 A GB7789/59 A GB 7789/59A GB 778959 A GB778959 A GB 778959A GB 869505 A GB869505 A GB 869505A
Authority
GB
United Kingdom
Prior art keywords
aromatic
carboxylic acids
water
acid
naphthalene
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
GB7789/59A
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of GB869505A publication Critical patent/GB869505A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D213/78—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen, e.g. ester or nitrile radicals
    • C07D213/79—Acids; Esters
    • C07D213/803—Processes of preparation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A process for the preparation of aromatic or aromatic-heterocyclic di- and tri-carboxylic acids or their alkali metal salts comprises reacting an aromatic hydrocarbon or heteroaryl compound free from carboxyl or other functional groups with alkali metal salts of aromatic or aromatic-heterocyclic carboxylic acids other than terephthalic acid (a) at a temperature of over 300 DEG C. under pressure, (b) in the absence of appreciable amounts of oxygen and water, (c) in the presence of substances which bind water or are capable of reacting with water, (d) in the presence of a protective gas (e) in the presence of cadmium, zinc, mercury or compounds thereof, and thereafter if desired, converting the alkali metal salts into the free acids. The carboxylic reactant is preferably the potassium salt of a mono-, di- or poly-carboxylic acid of the benzene series (other than salts of terephthalic acid) or of other aromatic series such as naphthalene, diphenyl and pyridine. The second reactant may be for example, benzene, naphthalene, diphenyl, pyridine, quinoline, isoquinoline, thiophene, thionaphthene or a ,a 1dipyridyl. The reaction may be carried out by heating in an atmosphere of carbon dioxide or nitrogen, preferably using cadmium fluoride as catalyst, and as water binding agent metal carbides, nitriles, borides or cyanates or elemental silicon or boron. Examples describe the preparation of terephthalic acid either alone or together with isocinchomeronic acid or pyridine di- and tri-carboxylic acids, and naphthalene 2,6-dicarboxylic acid. Specifications 828,028 and 847,246 are referred to.
GB7789/59A 1958-03-07 1959-03-06 Process for the preparation of cyclic di-and tri-carboxylic acids Expired GB869505A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE869505X 1958-03-07

Publications (1)

Publication Number Publication Date
GB869505A true GB869505A (en) 1961-05-31

Family

ID=6802962

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7789/59A Expired GB869505A (en) 1958-03-07 1959-03-06 Process for the preparation of cyclic di-and tri-carboxylic acids

Country Status (1)

Country Link
GB (1) GB869505A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0359098A1 (en) * 1988-09-05 1990-03-21 Nkk Corporation Method of manufacturing alkali metal salt of 2,3,6,7-naphthalenetetracarboxylic acid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0359098A1 (en) * 1988-09-05 1990-03-21 Nkk Corporation Method of manufacturing alkali metal salt of 2,3,6,7-naphthalenetetracarboxylic acid

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