DK0782993T3 - Fremgangsmåde til fremstilling af d,l-alfa-tocopherol i nærværelse af en perfluoralkylensulfonsyre som katalysator - Google Patents

Fremgangsmåde til fremstilling af d,l-alfa-tocopherol i nærværelse af en perfluoralkylensulfonsyre som katalysator

Info

Publication number
DK0782993T3
DK0782993T3 DK96120823T DK96120823T DK0782993T3 DK 0782993 T3 DK0782993 T3 DK 0782993T3 DK 96120823 T DK96120823 T DK 96120823T DK 96120823 T DK96120823 T DK 96120823T DK 0782993 T3 DK0782993 T3 DK 0782993T3
Authority
DK
Denmark
Prior art keywords
tocopherol
alpha
preparation
catalyst
sulfonic acid
Prior art date
Application number
DK96120823T
Other languages
English (en)
Inventor
Werner Bonrath
Original Assignee
Hoffmann La Roche
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 Hoffmann La Roche filed Critical Hoffmann La Roche
Application granted granted Critical
Publication of DK0782993T3 publication Critical patent/DK0782993T3/da

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)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Pyrane Compounds (AREA)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
DK96120823T 1996-01-05 1996-12-23 Fremgangsmåde til fremstilling af d,l-alfa-tocopherol i nærværelse af en perfluoralkylensulfonsyre som katalysator DK0782993T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH3196 1996-01-05

Publications (1)

Publication Number Publication Date
DK0782993T3 true DK0782993T3 (da) 2003-06-10

Family

ID=4177792

Family Applications (1)

Application Number Title Priority Date Filing Date
DK96120823T DK0782993T3 (da) 1996-01-05 1996-12-23 Fremgangsmåde til fremstilling af d,l-alfa-tocopherol i nærværelse af en perfluoralkylensulfonsyre som katalysator

Country Status (8)

Country Link
US (1) US5900494A (da)
EP (1) EP0782993B1 (da)
JP (1) JPH09194472A (da)
CN (1) CN1097590C (da)
AT (1) ATE233254T1 (da)
DE (1) DE59610172D1 (da)
DK (1) DK0782993T3 (da)
ES (1) ES2191078T3 (da)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5908939A (en) * 1996-11-11 1999-06-01 Roche Vitamins Inc. Method of making D,L-A-tocopherol
FR2784104B1 (fr) 1998-09-18 2002-12-27 Rhone Poulenc Nutrition Animal Procede de preparation de la vitamine e
DE10393642B4 (de) * 2002-11-21 2017-03-30 Dsm Ip Assets B.V. Herstellung von α-Tocopherol
WO2007039245A1 (en) * 2005-09-29 2007-04-12 Dsm Ip Assets B.V. Cleavage of alkynediols
EP3774756A1 (en) * 2018-03-29 2021-02-17 DSM IP Assets B.V. Process for the manufacture of chroman-6-ols with short side chains

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE960720C (de) 1954-01-25 1957-03-28 Hoffmann La Roche Verfahren zur Herstellung von ª‡-Tocopherol
DE1015446B (de) 1956-09-01 1957-09-12 Knoll Ag Verfahren zur Herstellung von d, 1-ª‡-Tocopherol
US3459773A (en) 1966-12-27 1969-08-05 Takasago Perfumery Co Ltd Process for producing alpha-tocopherol and its esters
US3444213A (en) * 1967-07-12 1969-05-13 Eastman Kodak Co Continuous process for producing dl alpha tocopherol
CH547278A (de) * 1971-01-11 1974-03-29 Hoffmann La Roche Verfahren zur herstellung von chromanderivaten.
US3708505A (en) * 1971-02-25 1973-01-02 Diamond Shamrock Corp Process for preparation of d,l-alpha tocopherol
BE810299A (fr) * 1974-01-29 1974-05-16 Procede de fabrication de composes contenant un noyau chromane.
US4217285A (en) * 1976-09-29 1980-08-12 Nisshin Flour Milling Co., Ltd. Process for the preparation of Dl-α-tocopherol of high purity
US4208334A (en) 1978-12-22 1980-06-17 Hoffmann-La Roches Inc. Process for preparation of α-tocopherol
US4634781A (en) 1982-09-30 1987-01-06 Basf Corporation Alpha tocopherol process
US4721559A (en) * 1986-10-17 1988-01-26 Olah George A Boron, aluminum and gallium perfluoro alkanesulfonate and resinsulfonate catalysts
US5110778A (en) * 1986-10-17 1992-05-05 Olah George A Boron aluminum and gallium perfluoro alkanesulfonate and resinsulfonate catalysts
EP0739239B1 (en) * 1994-01-12 1999-09-15 E.I. Du Pont De Nemours And Company Sol-gel derived porous microcomposite of perfluorinated ion-exchange polymer and metal oxide

Also Published As

Publication number Publication date
CN1097590C (zh) 2003-01-01
ES2191078T3 (es) 2003-09-01
EP0782993A1 (de) 1997-07-09
US5900494A (en) 1999-05-04
CN1160049A (zh) 1997-09-24
ATE233254T1 (de) 2003-03-15
JPH09194472A (ja) 1997-07-29
DE59610172D1 (de) 2003-04-03
EP0782993B1 (de) 2003-02-26

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