GB370823A - Process for the manufacture of cyclic ketones - Google Patents

Process for the manufacture of cyclic ketones

Info

Publication number
GB370823A
GB370823A GB2700131A GB2700131A GB370823A GB 370823 A GB370823 A GB 370823A GB 2700131 A GB2700131 A GB 2700131A GB 2700131 A GB2700131 A GB 2700131A GB 370823 A GB370823 A GB 370823A
Authority
GB
United Kingdom
Prior art keywords
heated
oxide
catalysts
cyclic
menthene
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
GB2700131A
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.)
Schering Kahlbaum AG
Original Assignee
Schering Kahlbaum AG
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 Schering Kahlbaum AG filed Critical Schering Kahlbaum AG
Publication of GB370823A publication Critical patent/GB370823A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/56—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds
    • C07C45/57—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom
    • C07C45/58—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom in three-membered rings

Landscapes

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

Abstract

Cyclic ketones are manufactured by heating the oxides of cyclic olefines, if desired in the presence of catalysts of the group comprising surface catalysts, such as pumice or silica gel, acid or neutral metal salts, such as magnesium sulphate or cupric pyrophosphate, which may be deposited on surface catalysts, and heavy metals, such as nickel. The starting materials are obtainable from cyclic olefines, for example by the action of per-acids. In examples: (1) 3-menthene oxide is heated with silica gel to 250 DEG C. yielding 3-menthone; (2) cyclohexene oxide is distilled over magnesium sulphate on pumice, heated to 230-250 DEG C., to produce cyclohexanone; (3) 1-menthene oxide is heated to 250-280 DEG C. with cupric pyrophosphate, producing carvomenthone; (4) 3-menthene oxide is heated alone to 250-280 DEG C. yielding menthone. Other starting materials specified are the oxides of methylcyclohexenes, e.g. 1-methylcyclohexene-3, and of camphene.
GB2700131A 1930-10-18 1931-09-28 Process for the manufacture of cyclic ketones Expired GB370823A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE566156T 1930-10-18

Publications (1)

Publication Number Publication Date
GB370823A true GB370823A (en) 1932-04-14

Family

ID=34559101

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2700131A Expired GB370823A (en) 1930-10-18 1931-09-28 Process for the manufacture of cyclic ketones

Country Status (3)

Country Link
DE (1) DE566156C (en)
FR (1) FR723395A (en)
GB (1) GB370823A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2803659A (en) * 1953-10-30 1957-08-20 Glidden Co Treatment of alpha-pinene oxide

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068291A (en) * 1958-08-18 1962-12-11 Exxon Research Engineering Co Conversion of epoxides
US3118947A (en) * 1960-06-22 1964-01-21 Exxon Research Engineering Co Epoxide conversion process
DE3431877A1 (en) * 1984-08-30 1986-03-13 Hüls AG, 4370 Marl METHOD FOR PRODUCING THE ALKYL ETHERS AND ENOLETERS OF ACETOINS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2803659A (en) * 1953-10-30 1957-08-20 Glidden Co Treatment of alpha-pinene oxide

Also Published As

Publication number Publication date
FR723395A (en) 1932-04-07
DE566156C (en) 1932-12-15

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