BE806242A - Procede de methylation de tocopherols - Google Patents

Procede de methylation de tocopherols

Info

Publication number
BE806242A
BE806242A BE136832A BE136832A BE806242A BE 806242 A BE806242 A BE 806242A BE 136832 A BE136832 A BE 136832A BE 136832 A BE136832 A BE 136832A BE 806242 A BE806242 A BE 806242A
Authority
BE
Belgium
Prior art keywords
tocopherols
methylation
Prior art date
Application number
BE136832A
Other languages
English (en)
French (fr)
Inventor
W S Baldwin
K W Keeney
Original Assignee
Gen Mills Chem Inc
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 Gen Mills Chem Inc filed Critical Gen Mills Chem Inc
Publication of BE806242A publication Critical patent/BE806242A/xx

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)
  • Catalysts (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
BE136832A 1972-10-20 1973-10-18 Procede de methylation de tocopherols BE806242A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00299482A US3819657A (en) 1972-10-20 1972-10-20 Methylation of tocopherols

Publications (1)

Publication Number Publication Date
BE806242A true BE806242A (fr) 1974-02-15

Family

ID=23155001

Family Applications (1)

Application Number Title Priority Date Filing Date
BE136832A BE806242A (fr) 1972-10-20 1973-10-18 Procede de methylation de tocopherols

Country Status (8)

Country Link
US (1) US3819657A (show.php)
JP (1) JPS5817192B2 (show.php)
BE (1) BE806242A (show.php)
CA (1) CA983513A (show.php)
DE (1) DE2351272C2 (show.php)
FR (1) FR2203812B1 (show.php)
GB (1) GB1445436A (show.php)
NL (1) NL7314218A (show.php)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53111069A (en) * 1977-03-09 1978-09-28 Tama Seikagaku Kenkyusho Kk Method of introducing methyl group to nonnalphaatocopherol
US4239691A (en) * 1979-06-04 1980-12-16 Eastman Kodak Company Conversion of non-alpha-tocopherols to alpha-tocopherols
EP0159018A3 (en) * 1984-04-17 1986-10-01 HENKEL CORPORATION (a Delaware corp.) Production of d-alpha-tocopherol from natural plant sources
EP0178400A1 (en) * 1984-09-25 1986-04-23 HENKEL CORPORATION (a Delaware corp.) Methylation of non-alpha-tocopherol compounds
DE3813624A1 (de) * 1988-04-22 1989-11-02 Basf Ag Verfahren zur herstellung von d-(alpha)-tocopherol aus natuerlichen vorprodukten
EP0531639B1 (en) * 1991-07-18 1999-09-01 F. Hoffmann-La Roche Ag Tocopherol cyclase
US5504220A (en) * 1995-08-17 1996-04-02 Eastman Chemical Company Preparation of α-tocopherol
ES2187603T3 (es) * 1995-10-18 2003-06-16 Hoffmann La Roche Hidroximetilacion de tocoferoles.
US5932748A (en) * 1997-06-06 1999-08-03 Roche Vitamins Inc. Process for permethylating non-α-tocopherols to produce α-tocopherol
US20030219465A1 (en) * 2002-05-23 2003-11-27 Suresh Kumar Gidwani Composition for delivery of dithranol

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992235A (en) * 1956-10-15 1961-07-11 Vitamins Ltd Materials having vitamin e activity
GB1031495A (en) * 1964-01-24 1966-06-02 Eisai Co Ltd Process for producing ª‡-tocopherol having a high vitamin e activity
US3402182A (en) * 1966-04-28 1968-09-17 Eisai Co Ltd Method of isolating and refining tocopherol homologues
US3631068A (en) * 1969-12-15 1971-12-28 Eastman Kodak Co Process for converting a mixed tocopherol concentrate to essentially all alpha-tocopherol

Also Published As

Publication number Publication date
DE2351272C2 (de) 1984-10-25
FR2203812B1 (show.php) 1977-05-27
JPS5817192B2 (ja) 1983-04-05
GB1445436A (en) 1976-08-11
DE2351272A1 (de) 1974-05-02
US3819657A (en) 1974-06-25
FR2203812A1 (show.php) 1974-05-17
CA983513A (en) 1976-02-10
JPS4972260A (show.php) 1974-07-12
NL7314218A (show.php) 1974-04-23

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: HENKEL CORP.

Effective date: 19871031