GB370823A - Process for the manufacture of cyclic ketones - Google Patents
Process for the manufacture of cyclic ketonesInfo
- 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
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.
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)
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)
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 |
-
1930
- 1930-10-18 DE DE1930566156D patent/DE566156C/en not_active Expired
-
1931
- 1931-09-26 FR FR723395D patent/FR723395A/en not_active Expired
- 1931-09-28 GB GB2700131A patent/GB370823A/en not_active Expired
Cited By (1)
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 |
---|---|
DE566156C (en) | 1932-12-15 |
FR723395A (en) | 1932-04-07 |
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