ES8607272A1 - Procedimiento para la metilacion de un homologo no alfa del tocoferol - Google Patents
Procedimiento para la metilacion de un homologo no alfa del tocoferolInfo
- Publication number
- ES8607272A1 ES8607272A1 ES545838A ES545838A ES8607272A1 ES 8607272 A1 ES8607272 A1 ES 8607272A1 ES 545838 A ES545838 A ES 545838A ES 545838 A ES545838 A ES 545838A ES 8607272 A1 ES8607272 A1 ES 8607272A1
- Authority
- ES
- Spain
- Prior art keywords
- tocopherol
- alpha
- vapor
- liquid phase
- methylation
- 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
- C07D—HETEROCYCLIC COMPOUNDS
- C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
- C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
- C07D311/58—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4
- C07D311/70—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4 with two hydrocarbon radicals attached in position 2 and elements other than carbon and hydrogen in position 6
- C07D311/72—3,4-Dihydro derivatives having in position 2 at least one methyl radical and in position 6 one oxygen atom, e.g. tocopherols
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pyrane Compounds (AREA)
Abstract
PROCEDIMIENTO PARA LA METILACION DE UN HOMOLOGO NO ALFA DEL TOCOFEROL. SE OBTIENE PONIENDO EN CONTACTO EL HOMOLOGO NO ALFA DEL TOCOFEROL CON UN AGENTE DE ALQUILACION TAL COMO METANOL, FORMALDEHIDO O ETER DIMETILICO DURANTE UN PERIODO DE TIEMPO SUFICIENTE A UNA TEMPERATURA EN EL INTERVALO DE APROXIMADAMENTE 300JC A APROXIMADAMENTE 550JC EN PRESENCIA DE UN CATALIZADOR DE ALQUILACION. LA METILACION OCURRIRA EN UNA CANTIDAD SUSTANCIAL, PRODUCIENDO ALFATOCOFEROL.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US65172684A | 1984-09-18 | 1984-09-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
ES8607272A1 true ES8607272A1 (es) | 1986-06-01 |
ES545838A0 ES545838A0 (es) | 1986-06-01 |
Family
ID=24613975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES545838A Expired ES8607272A1 (es) | 1984-09-18 | 1985-08-02 | Procedimiento para la metilacion de un homologo no alfa del tocoferol |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0176690A1 (es) |
JP (1) | JPS6172776A (es) |
AU (1) | AU4567185A (es) |
ES (1) | ES8607272A1 (es) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5932748A (en) * | 1997-06-06 | 1999-08-03 | Roche Vitamins Inc. | Process for permethylating non-α-tocopherols to produce α-tocopherol |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2519863A (en) * | 1949-05-14 | 1950-08-22 | Eastman Kodak Co | Conversion of beta-, gamma-, and delta-tocopherol to alpha-tocopherol by aminoalkylation and reduction |
GB1031495A (en) * | 1964-01-24 | 1966-06-02 | Eisai Co Ltd | Process for producing ª‡-tocopherol having a high vitamin e activity |
US4239691A (en) * | 1979-06-04 | 1980-12-16 | Eastman Kodak Company | Conversion of non-alpha-tocopherols to alpha-tocopherols |
-
1985
- 1985-07-27 EP EP19850109467 patent/EP0176690A1/en not_active Withdrawn
- 1985-07-31 AU AU45671/85A patent/AU4567185A/en not_active Abandoned
- 1985-08-01 JP JP17098585A patent/JPS6172776A/ja active Pending
- 1985-08-02 ES ES545838A patent/ES8607272A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0176690A1 (en) | 1986-04-09 |
AU4567185A (en) | 1986-03-27 |
ES545838A0 (es) | 1986-06-01 |
JPS6172776A (ja) | 1986-04-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR920002504A (ko) | 트리유기포스핀촉매를 사용하는 고리형유기 카본에이트와의 페놀 및 티오페놀류의 히드록시알킬화방법 | |
ES8700647A1 (es) | Procedimiento para la preparacion de un compuesto carbonilo aromatico | |
IL80391A (en) | Process for the preparation of decabromodiphenyl ether with improved thermal stability | |
ES482997A1 (es) | Procedimiento para la preparacion de eteres fenolicos | |
ES8607272A1 (es) | Procedimiento para la metilacion de un homologo no alfa del tocoferol | |
FI862557A (fi) | Foerfarande foer framstaellning av en dibromnitrofoerening. | |
GB1531706A (en) | Process for producing carbohydrate-phenol condensation resins | |
EP0170986A3 (en) | A process for the preparation of copolycarbonates of sulfonyl diphenol | |
IE42388L (en) | Preparing pinacolone | |
IL117987A0 (en) | A process for the preparation of tetrabromobisphenol-A | |
ES8503962A1 (es) | Un aparato para mantener una temperatura de punto final deseada para el producto liquido de la parte superior de un proceso de destilacion fraccionada | |
JPS5476561A (en) | Production of linear trimer of p-isopropenylphenol | |
PT958270E (pt) | Processo para a preparacao de aldeidos na presenca de uma fase aquosa contendo rodio e uma triarilfosfina sulfonada como catalisador | |
BR8006536A (pt) | Processo para a preparacao de 1,1-diacetoxietano | |
IE44659L (en) | Method of preparing 2, 6-ditert. butylphenol | |
JPS557227A (en) | Preparation of urethane | |
MX165843B (es) | Hidrodesalquilatacion a baja temperatura de fenoles alquilatados | |
JPS57193443A (en) | Preparation of bisphenol a-bis(aminobenzenesulfonate) | |
Razimov et al. | Thermal polymerization of p-benzoquinone | |
JPS5488227A (en) | Preparation of 2,6-dihydrocy-toluene | |
ES8303347A1 (es) | "procedimiento para la preparacion de amino-pridinas". | |
JPS5538836A (en) | Epoxy resin curing agent | |
GB1470864A (en) | Continuous manufacture of ethylene oxide and/or propylene oxide adducts | |
JPS5630929A (en) | Production of styrene or benzen nucleus-substituted styrene | |
ES510859A0 (es) | Procedimiento para obtener soluciones de vehiculo diluibles con agua. |