FR2044057A5 - Isomerisation of alpha isopropylnaphthalene - to the beta isomer - Google Patents

Isomerisation of alpha isopropylnaphthalene - to the beta isomer

Info

Publication number
FR2044057A5
FR2044057A5 FR6914635A FR6914635A FR2044057A5 FR 2044057 A5 FR2044057 A5 FR 2044057A5 FR 6914635 A FR6914635 A FR 6914635A FR 6914635 A FR6914635 A FR 6914635A FR 2044057 A5 FR2044057 A5 FR 2044057A5
Authority
FR
France
Prior art keywords
alpha
isopropylnaphthalene
degrees
isomerisation
beta isomer
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
FR6914635A
Other languages
French (fr)
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.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
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 American Cyanamid Co filed Critical American Cyanamid Co
Priority to FR6914635A priority Critical patent/FR2044057A5/en
Application granted granted Critical
Publication of FR2044057A5 publication Critical patent/FR2044057A5/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
    • C07C5/22—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by isomerisation
    • C07C5/27—Rearrangement of carbon atoms in the hydrocarbon skeleton
    • C07C5/2729—Changing the branching point of an open chain or the point of substitution on a ring
    • C07C5/2732—Catalytic processes
    • C07C5/274—Catalytic processes with inorganic acids; with salts or anhydrides of acids
    • C07C5/2745—Acids of phosphorus; Salts thereof; Phosphorus acids

Landscapes

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

Abstract

The ratio of beta -isomer to alpha -isomer in a mixture of alpha -to beta -isopropylnaphthalene is increased by treating the mixture with at least 1% of a solid phosphoric acid catalyst, referred to wt. of the mixture, at is approx. 200-400 degrees C. Process may be performed batchwise at 350 degrees-400 degrees C, or continuously at 200 degrees-350 degrees C.
FR6914635A 1969-05-07 1969-05-07 Isomerisation of alpha isopropylnaphthalene - to the beta isomer Expired FR2044057A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR6914635A FR2044057A5 (en) 1969-05-07 1969-05-07 Isomerisation of alpha isopropylnaphthalene - to the beta isomer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6914635A FR2044057A5 (en) 1969-05-07 1969-05-07 Isomerisation of alpha isopropylnaphthalene - to the beta isomer

Publications (1)

Publication Number Publication Date
FR2044057A5 true FR2044057A5 (en) 1971-02-19

Family

ID=9033619

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6914635A Expired FR2044057A5 (en) 1969-05-07 1969-05-07 Isomerisation of alpha isopropylnaphthalene - to the beta isomer

Country Status (1)

Country Link
FR (1) FR2044057A5 (en)

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Legal Events

Date Code Title Description
ST Notification of lapse