CS209508B2 - Method of making the methylheptenone or/and methylheptenolone by the circle cleavage of the 2,6,6-trimethyl-5,6-dihydro-4h-pyran - Google Patents
Method of making the methylheptenone or/and methylheptenolone by the circle cleavage of the 2,6,6-trimethyl-5,6-dihydro-4h-pyran Download PDFInfo
- Publication number
- CS209508B2 CS209508B2 CS788244A CS824478A CS209508B2 CS 209508 B2 CS209508 B2 CS 209508B2 CS 788244 A CS788244 A CS 788244A CS 824478 A CS824478 A CS 824478A CS 209508 B2 CS209508 B2 CS 209508B2
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- pyran
- methylheptenone
- water
- dihydro
- trimethyl
- Prior art date
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
- C07C45/60—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 six-membered rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT19008/78A IT1092952B (it) | 1978-01-03 | 1978-01-03 | Metodo per l'apertura di anelli piranici |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS209508B2 true CS209508B2 (en) | 1981-12-31 |
Family
ID=11153804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS788244A CS209508B2 (en) | 1978-01-03 | 1978-12-12 | Method of making the methylheptenone or/and methylheptenolone by the circle cleavage of the 2,6,6-trimethyl-5,6-dihydro-4h-pyran |
Country Status (15)
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4898988A (en) * | 1989-03-13 | 1990-02-06 | W. R. Grace & Co.-Conn. | Process for the preparation of β-hydroxyketones |
| CN110845312A (zh) * | 2019-11-27 | 2020-02-28 | 万华化学集团股份有限公司 | 一种制备甲基庚烯酮的方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3009959A (en) * | 1961-11-21 | Figure i | ||
| US3255258A (en) * | 1966-06-07 | Isomerization of alkylene oxides | ||
| US2624764A (en) * | 1949-12-27 | 1953-01-06 | Monsanto Chemicals | Preparation of keto aldehydes |
| US3597484A (en) * | 1967-03-06 | 1971-08-03 | Basf Ag | Production of olefinically unsaturated oxo compounds |
| US3686321A (en) * | 1971-01-18 | 1972-08-22 | Basf Ag | Production of 2-methylhept-1-en-6-one |
| US3864403A (en) * | 1973-08-10 | 1975-02-04 | Hoffmann La Roche | Preparation of 6-methyl-5-hepten-2-one |
-
1978
- 1978-01-03 IT IT19008/78A patent/IT1092952B/it active
- 1978-11-27 DK DK528878A patent/DK528878A/da not_active Application Discontinuation
- 1978-11-28 US US05/964,137 patent/US4226810A/en not_active Expired - Lifetime
- 1978-11-28 NO NO783994A patent/NO147832C/no unknown
- 1978-12-01 JP JP14797278A patent/JPS5495506A/ja active Pending
- 1978-12-04 GB GB7847054A patent/GB2013176B/en not_active Expired
- 1978-12-04 CA CA317,312A patent/CA1102350A/en not_active Expired
- 1978-12-05 DE DE2852587A patent/DE2852587C3/de not_active Expired
- 1978-12-06 NL NL7811919A patent/NL7811919A/xx not_active Application Discontinuation
- 1978-12-08 FR FR7834655A patent/FR2413350A1/fr active Granted
- 1978-12-12 CS CS788244A patent/CS209508B2/cs unknown
- 1978-12-13 BE BE192284A patent/BE872723A/xx not_active IP Right Cessation
- 1978-12-29 ES ES476841A patent/ES476841A1/es not_active Expired
-
1979
- 1979-01-02 SE SE7900024A patent/SE7900024L/xx unknown
- 1979-01-03 ZA ZA7923A patent/ZA7923B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO147832C (no) | 1983-06-29 |
| ZA7923B (en) | 1980-01-30 |
| NO783994L (no) | 1979-07-04 |
| IT7819008A0 (it) | 1978-01-03 |
| DE2852587A1 (de) | 1979-07-05 |
| DK528878A (da) | 1979-07-04 |
| DE2852587B2 (de) | 1980-12-18 |
| DE2852587C3 (de) | 1981-10-29 |
| FR2413350A1 (fr) | 1979-07-27 |
| SE7900024L (sv) | 1979-07-04 |
| IT1092952B (it) | 1985-07-12 |
| FR2413350B1 (US07923587-20110412-C00001.png) | 1983-08-26 |
| CA1102350A (en) | 1981-06-02 |
| BE872723A (fr) | 1979-06-13 |
| ES476841A1 (es) | 1979-06-16 |
| US4226810A (en) | 1980-10-07 |
| JPS5495506A (en) | 1979-07-28 |
| GB2013176B (en) | 1982-10-06 |
| NL7811919A (nl) | 1979-07-05 |
| GB2013176A (en) | 1979-08-08 |
| NO147832B (no) | 1983-03-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Robeson et al. | Neovitamin A1 | |
| DE3587938T2 (de) | Bryostatine. | |
| Furneaux et al. | Synthesis and thermal chemistry of isolevoglucosenone | |
| CS209508B2 (en) | Method of making the methylheptenone or/and methylheptenolone by the circle cleavage of the 2,6,6-trimethyl-5,6-dihydro-4h-pyran | |
| Milas et al. | Synthesis of Products Related to Vitamin A. VIII. The Synthesis of 1-(Cyclohexen-1'-yl)-3-methyl-3-epoxybutyne-1 and Related Products1 | |
| Henbest et al. | 638. Preparation of 1-oxygenated steroids. The reaction of cholest-1-en-3 β-ol with thionyl chloride | |
| Abell et al. | The Free Radical Addition of Hydrogen Bromide to the 1-Bromocycloalkenes1 | |
| Gensler et al. | Acetylene-Allene Isomerization of Nonadiyne-1, 41 | |
| Jacobs et al. | Effect of substitution on homoallenic participation in solvolyses | |
| US2576104A (en) | Dehydration and isomerization of straight-chain-conjugated polyene esters and acids | |
| Nakazaki et al. | Syntheses and chemical characterization of tris-bridged [2.2. 2] cyclophanes with a triphenylmethyl component | |
| Culvenor et al. | 471. Some reactions of arylsulphonylpropane derivatives | |
| Huffman et al. | Synthesis of agarofurans by cyclization of 10-epieudesmene-3, 11-diols | |
| Wiering et al. | Cycloaddition of cyclopropanone acetals to tetracyanoethylene | |
| IE46570B1 (en) | Prostaglandins | |
| Tyagi et al. | Terpenoids—XLIII: Base-catalysed reactions with N-lithioethylenediamine | |
| Gano et al. | A new method for predicting isomerization barriers in sterically congested alkenes from the first correct barrier measurement in solution:(Z)-2, 2, 3, 4, 5, 5-hexamethyl-3-hexene | |
| Milas | The synthesis of vitamin A and related products | |
| Nakazaki et al. | Synthesis of a C3-symmetric tris-bridged [2.2. 2] cyclophane with a triphenylmethyl component | |
| US2451736A (en) | Polyenes and process for the manufacture thereof | |
| MYHRE et al. | Isolation and Proof of Structure of 1, 1, 4, 4-Tetramethyl-6-t-butyl-1, 2, 3, 4-tetrahydronaphthalene1 | |
| US3758511A (en) | Preparation of d,1-zearalenones | |
| Ferezou et al. | Biomimetic synthesis of bacterial C50 carotenoids decaprenoxanthin and CP 450 | |
| Crombie et al. | 87. Lipids. Part IV. Synthesis of branched-chain fatty acids | |
| US2846487A (en) | Process for the manufacture of carotenoids |