ES2191078T3 - Procedimiento de obtencion de d,1-alfa-tocoferol en presencia de un catalizador de acido perfluoroalquilensulfonico. - Google Patents

Procedimiento de obtencion de d,1-alfa-tocoferol en presencia de un catalizador de acido perfluoroalquilensulfonico.

Info

Publication number
ES2191078T3
ES2191078T3 ES96120823T ES96120823T ES2191078T3 ES 2191078 T3 ES2191078 T3 ES 2191078T3 ES 96120823 T ES96120823 T ES 96120823T ES 96120823 T ES96120823 T ES 96120823T ES 2191078 T3 ES2191078 T3 ES 2191078T3
Authority
ES
Spain
Prior art keywords
tocopherol
alpha
perfluoroalkylensulphonic
procedure
obtaining
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 - Lifetime
Application number
ES96120823T
Other languages
English (en)
Inventor
Werner Bonrath
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche AG
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 F Hoffmann La Roche AG filed Critical F Hoffmann La Roche AG
Application granted granted Critical
Publication of ES2191078T3 publication Critical patent/ES2191078T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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)

Abstract

UN PROCEDIMIENTO PARA LA OBTENCION DE D,L- AL -TOCOFEROL POR CONDENSACION DE TRIMETILHIDROQUINONA CON ISOFITOL, QUE CONSISTE EN LLEVAR A CABO LA CONDENSACION EN PRESENCIA DE UN ACIDO POLIPERFLUOROALQUILEN-SULFONICO COMO CATALILZADOR, Y EN UN DISOLVENTE, EN PARTICULAR UN DISOLVENTE APROTICO. EN EL CASO DEL CATALIZADOR SE TRATA PREFERIBLEMENTE DE UNO DEL GRUPO DEL NAFION{SUP,R}, P. E. NAFION NR 50{SUP,R} O NAFION 117{SUP,R}.
ES96120823T 1996-01-05 1996-12-23 Procedimiento de obtencion de d,1-alfa-tocoferol en presencia de un catalizador de acido perfluoroalquilensulfonico. Expired - Lifetime ES2191078T3 (es)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ES2191078T3 true ES2191078T3 (es) 2003-09-01

Family

ID=4177792

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96120823T Expired - Lifetime ES2191078T3 (es) 1996-01-05 1996-12-23 Procedimiento de obtencion de d,1-alfa-tocoferol en presencia de un catalizador de acido perfluoroalquilensulfonico.

Country Status (8)

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

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
DK0782993T3 (da) 2003-06-10
CN1160049A (zh) 1997-09-24
EP0782993A1 (de) 1997-07-09
JPH09194472A (ja) 1997-07-29
US5900494A (en) 1999-05-04
CN1097590C (zh) 2003-01-01
ATE233254T1 (de) 2003-03-15
EP0782993B1 (de) 2003-02-26
DE59610172D1 (de) 2003-04-03

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