GB1234780A - Selective hydrogenation of twelve-membered carbocyclic trienes - Google Patents

Selective hydrogenation of twelve-membered carbocyclic trienes

Info

Publication number
GB1234780A
GB1234780A GB33484/68A GB3348468A GB1234780A GB 1234780 A GB1234780 A GB 1234780A GB 33484/68 A GB33484/68 A GB 33484/68A GB 3348468 A GB3348468 A GB 3348468A GB 1234780 A GB1234780 A GB 1234780A
Authority
GB
United Kingdom
Prior art keywords
cyclododecene
cyclododecatriene
hydrogen
partial pressure
mole
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
GB33484/68A
Inventor
Ralph Levine
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.)
Columbian Carbon Co
Original Assignee
Columbian Carbon 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 Columbian Carbon Co filed Critical Columbian Carbon Co
Priority to GB33484/68A priority Critical patent/GB1234780A/en
Publication of GB1234780A publication Critical patent/GB1234780A/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
    • C07C5/02—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation
    • C07C5/03—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation of non-aromatic carbon-to-carbon double bonds
    • C07C5/05—Partial hydrogenation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
    • C07C2521/18—Carbon
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
    • C07C2523/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals
    • C07C2523/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of noble metals of the platinum group metals
    • C07C2523/44—Palladium
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2601/00—Systems containing only non-condensed rings
    • C07C2601/18—Systems containing only non-condensed rings with a ring being at least seven-membered
    • C07C2601/20—Systems containing only non-condensed rings with a ring being at least seven-membered the ring being twelve-membered

Landscapes

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

Abstract

1,234,780. Cyclododecene. COLUMBIAN CARBON CO. 12 July, 1968, No. 33484/68. Heading C5E. Cyclododecene is prepared by hydrogenating cyclododecatriene with gaseous hydrogen at a temperature below 160‹ C. until from 07À5-1À8 moles of H 2 per mole of cyclododecatriene have reacted and then continuing the hydrogenation at an increased temperature of up to 300‹ C. until a total of 2 moles of hydrogen have reacted, the entire process being conducted under a H 2 partial pressure below 45 p.s.i.a., the H 2 partial pressure during the reaction of at least 0À75 mole of hydrogen being from 20 to 45 p.s.i.a. and the H 2 partial pressure during the final 0À1 mole portion of hydrogen being less than 20 p.s.i.a. The cyclododecatriene may be unsubstituted or substituted with C 1 -C 3 alkyl groups or halogen in which case the product cyclododecene is similarly substituted. A hydrogenation catalyst such as palladium supported on carbon may be used. Examples describe the preparation of cyclododecene from cyclododecatriene - 1,5,9. Inert solvents such as hexane, heptane, benzene or toluene may be present.
GB33484/68A 1968-07-12 1968-07-12 Selective hydrogenation of twelve-membered carbocyclic trienes Expired GB1234780A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB33484/68A GB1234780A (en) 1968-07-12 1968-07-12 Selective hydrogenation of twelve-membered carbocyclic trienes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33484/68A GB1234780A (en) 1968-07-12 1968-07-12 Selective hydrogenation of twelve-membered carbocyclic trienes

Publications (1)

Publication Number Publication Date
GB1234780A true GB1234780A (en) 1971-06-09

Family

ID=10353565

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33484/68A Expired GB1234780A (en) 1968-07-12 1968-07-12 Selective hydrogenation of twelve-membered carbocyclic trienes

Country Status (1)

Country Link
GB (1) GB1234780A (en)

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