IT990452B - Procedimento per la produzione di d.l.alfa.tocoferolo - Google Patents

Procedimento per la produzione di d.l.alfa.tocoferolo

Info

Publication number
IT990452B
IT990452B IT48541/72A IT4854172A IT990452B IT 990452 B IT990452 B IT 990452B IT 48541/72 A IT48541/72 A IT 48541/72A IT 4854172 A IT4854172 A IT 4854172A IT 990452 B IT990452 B IT 990452B
Authority
IT
Italy
Prior art keywords
alfa
tocopherol
procedure
production
Prior art date
Application number
IT48541/72A
Other languages
English (en)
Original Assignee
Diamond Shamrock Corp
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 Diamond Shamrock Corp filed Critical Diamond Shamrock Corp
Application granted granted Critical
Publication of IT990452B publication Critical patent/IT990452B/it

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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
IT48541/72A 1971-02-25 1972-02-24 Procedimento per la produzione di d.l.alfa.tocoferolo IT990452B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11904871A 1971-02-25 1971-02-25

Publications (1)

Publication Number Publication Date
IT990452B true IT990452B (it) 1975-06-20

Family

ID=22382303

Family Applications (1)

Application Number Title Priority Date Filing Date
IT48541/72A IT990452B (it) 1971-02-25 1972-02-24 Procedimento per la produzione di d.l.alfa.tocoferolo

Country Status (8)

Country Link
US (1) US3708505A (it)
JP (1) JPS5341154B1 (it)
CA (1) CA968805A (it)
DE (1) DE2208795C3 (it)
FR (1) FR2126214B1 (it)
GB (1) GB1371701A (it)
IL (1) IL38718A (it)
IT (1) IT990452B (it)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4055575A (en) * 1975-03-20 1977-10-25 Scm Corporation Synthesis of dehydrophytol and vitamin E
DE2606830C3 (de) * 1976-02-20 1981-08-27 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von Tocopherol
US4191692A (en) * 1976-02-20 1980-03-04 Basf Aktiengesellschaft Manufacture of tocopherol
JPS6019309B2 (ja) * 1976-09-29 1985-05-15 日清製粉株式会社 高純度ｄｌ−α−トコフエロ−ルの製造法
DE3203487A1 (de) * 1982-02-03 1983-08-11 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von tocopherylacetat oder tocopherylpropionat
DE4208477A1 (de) * 1992-03-17 1993-09-23 Basf Ag Verfahren zur herstellung von vitamin e
US5663376A (en) † 1994-07-27 1997-09-02 Eisai Co., Ltd. Process for the preparation of α-tocopherol
FR2733977B1 (fr) * 1995-05-10 1997-07-04 Rhone Poulenc Nutrition Animal Procede de preparation de phenols substitues
DE59610172D1 (de) * 1996-01-05 2003-04-03 Hoffmann La Roche Verfahren zur Herstellung von d,l-alpha-Tocopherol in Gegenwart einer Perfluoralkylensulfonsäure als Katalysator
US6005122A (en) * 1996-12-23 1999-12-21 Basf Aktiengesellschaft Preparation of α-tocopherol or α-tocopheryl acetate by reacting trimethylhydroquinone and phytol or isophytol, with recycling of the zinc halide condensation catalyst
DE69931421T2 (de) * 1998-04-06 2006-11-09 Dsm Ip Assets B.V. Verfahren zur Herstellung von d,l-alpha-Tocopherol in einem Carbonat-Lösungsmittel und in Anwesenheit eines sauren schwefelhaltigen Katalysators
FR2784104B1 (fr) * 1998-09-18 2002-12-27 Rhone Poulenc Nutrition Animal Procede de preparation de la vitamine e
ES2243585T3 (es) 2000-11-22 2005-12-01 Basf Aktiengesellschaft Procedimiento para la acilacion en cintinuo de derivados del ester de cromanol.
EP1562929B1 (en) * 2002-11-21 2007-11-14 DSM IP Assets B.V. Manufacture of tocopheryl acetate
KR101154117B1 (ko) * 2003-01-13 2012-06-11 디에스엠 아이피 어셋츠 비.브이. α-토코페릴 아세테이트의 제조방법
WO2005121115A1 (en) * 2004-06-11 2005-12-22 Dsm Ip Assets B.V. PROCESS FOR THE MANUFACTURE OF CHROMAN DERIVATIVES, ESPECIALLY α-TOCOPHEROL AND ALKANOATES THEREOF
CN106565659B (zh) * 2016-11-01 2019-06-18 万华化学集团股份有限公司 一种制备维生素e乙酸酯的方法
CN108409704A (zh) * 2018-01-24 2018-08-17 上海优合生物科技有限公司 一种高纯度生育酚琥珀酸酯盐的制备方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2411969A (en) * 1938-03-31 1946-12-03 Hoffmann La Roche Process for the preparation of synthetic dl-tocopherols
US2411968A (en) * 1938-03-31 1946-12-03 Hoffmann La Roche Process for the preparation of synthetic dl-tocopherols

Also Published As

Publication number Publication date
DE2208795B2 (de) 1978-03-09
CA968805A (en) 1975-06-03
JPS5341154B1 (it) 1978-10-31
DE2208795C3 (de) 1978-11-02
IL38718A0 (en) 1972-04-27
FR2126214A1 (it) 1972-10-06
GB1371701A (en) 1974-10-23
FR2126214B1 (it) 1977-07-15
IL38718A (en) 1975-02-10
DE2208795A1 (de) 1972-08-31
US3708505A (en) 1973-01-02

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