GB978918A - A process for converting benzene carboxylic acids into phenolic compounds - Google Patents

A process for converting benzene carboxylic acids into phenolic compounds

Info

Publication number
GB978918A
GB978918A GB3691963A GB3691963A GB978918A GB 978918 A GB978918 A GB 978918A GB 3691963 A GB3691963 A GB 3691963A GB 3691963 A GB3691963 A GB 3691963A GB 978918 A GB978918 A GB 978918A
Authority
GB
United Kingdom
Prior art keywords
specifications
acid
carboxylic acids
oxygen
converted
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
GB3691963A
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of GB978918A publication Critical patent/GB978918A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/50—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions decreasing the number of carbon atoms
    • C07C37/56—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions decreasing the number of carbon atoms by replacing a carboxyl or aldehyde group by a hydroxy group

Landscapes

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

Abstract

Benzenemonocarboxylic acids having at least one unsubstituted position ortho to the carboxyl group, the optional substituents being phenyl, alkyl, alkoxy, nitro and halogen, are converted in the vapour phase to phenols at a temperature above the boiling or sublimation point of the acid and below that at which destructive carbonization occurs, in presence of oxygen or an oxygen-containing gas and a copper compound as catalyst. An anhydride, salt or ester of the acid may alternatively be used. In examples, benzoic acid was converted to phenol and phenyl benzoate. Specifications 763,738, 824,631, and U.S.A. Specifications Re-issue 24,848, 2,727,926 and 2,852,567 are referred to.ALSO:Catalysts for the conversion of carboxylic acids to phenols comprise a copper compound supported on, e.g., diatomaceous earth, pumice or Al2O3, especially corundum. Co2O3 and salts, oxides or hydrides of Mg, Na, K, Co, Li and Ba may be present, as well as transition metal compounds, e.g. of Zr, Ti, V, Cr, Mo, HF, Mn or the rare earth metals; Sc, Y, Zr, Th and U are also mentioned. The activating metals, as well as Cu, may be present as phosphates, sulphates, selenates, tellurates, carbonates, benzoates or phthalates, although oxides or hydroxides are preferred. Exemplified catalysts contain alpha-alumina supported Cu with Li or "didymium". Specifications 768,738 and 824,631 are referred to.
GB3691963A 1962-09-21 1963-09-19 A process for converting benzene carboxylic acids into phenolic compounds Expired GB978918A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL283476 1962-09-21
NL283477 1962-09-21

Publications (1)

Publication Number Publication Date
GB978918A true GB978918A (en) 1965-01-01

Family

ID=26641853

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3691963A Expired GB978918A (en) 1962-09-21 1963-09-19 A process for converting benzene carboxylic acids into phenolic compounds

Country Status (3)

Country Link
BE (1) BE637598A (en)
ES (1) ES291802A1 (en)
GB (1) GB978918A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3277184A (en) * 1963-09-30 1966-10-04 Shell Oil Co Phenol production
DE2844195A1 (en) * 1977-11-21 1979-05-23 Lummus Co NEW CATALYST AND ITS USE FOR THE PRODUCTION OF PHENOLS
US4277630A (en) * 1977-11-21 1981-07-07 The Lummus Company Catalyst and process for producing aromatic hydroxy compounds
EP0040452A1 (en) * 1980-05-16 1981-11-25 Stamicarbon B.V. Method for the preparation of substituted or unsubstituted phenol and catalysts therefor
EP0052839A1 (en) * 1980-11-26 1982-06-02 Sumitomo Chemical Company, Limited Process for producing phenols

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3277184A (en) * 1963-09-30 1966-10-04 Shell Oil Co Phenol production
DE2844195A1 (en) * 1977-11-21 1979-05-23 Lummus Co NEW CATALYST AND ITS USE FOR THE PRODUCTION OF PHENOLS
US4277630A (en) * 1977-11-21 1981-07-07 The Lummus Company Catalyst and process for producing aromatic hydroxy compounds
EP0040452A1 (en) * 1980-05-16 1981-11-25 Stamicarbon B.V. Method for the preparation of substituted or unsubstituted phenol and catalysts therefor
EP0052839A1 (en) * 1980-11-26 1982-06-02 Sumitomo Chemical Company, Limited Process for producing phenols
US4390736A (en) * 1980-11-26 1983-06-28 Sumitomo Chemical Company, Limited Process for producing phenols

Also Published As

Publication number Publication date
ES291802A1 (en) 1964-03-01
BE637598A (en) 1964-03-19

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