IN188430B - - Google Patents

Info

Publication number
IN188430B
IN188430B IN388MA1999A IN188430B IN 188430 B IN188430 B IN 188430B IN 388MA1999 A IN388MA1999 A IN 388MA1999A IN 188430 B IN188430 B IN 188430B
Authority
IN
India
Application number
Other languages
English (en)
Inventor
Marcel Baak
Werner Bonrath
Paul Kreienbuhl
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
Publication of IN188430B publication Critical patent/IN188430B/en

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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pyrane Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
IN388MA1999 1998-04-06 1999-04-05 IN188430B (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98106237 1998-04-06

Publications (1)

Publication Number Publication Date
IN188430B true IN188430B (zh) 2002-09-21

Family

ID=8231723

Family Applications (1)

Application Number Title Priority Date Filing Date
IN388MA1999 IN188430B (zh) 1998-04-06 1999-04-05

Country Status (10)

Country Link
US (1) US6066745A (zh)
EP (1) EP0949255B1 (zh)
JP (1) JP2000053673A (zh)
KR (1) KR19990082913A (zh)
CN (1) CN1181068C (zh)
BR (1) BR9902217A (zh)
CA (1) CA2267826A1 (zh)
DE (1) DE69931421T2 (zh)
ES (1) ES2264230T3 (zh)
IN (1) IN188430B (zh)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6369242B2 (en) 2000-03-17 2002-04-09 Roche Vitamins Inc. Tocopherol manufacture by tris(perfluorohydrocarbylsulphonyl) methane or metal methides thereof
EP1180517B1 (en) 2000-08-18 2003-07-30 Roche Vitamins AG Process for manufacturing (all-rac)-alpha-tocopherol
WO2004046126A1 (en) * 2002-11-21 2004-06-03 Dsm Ip Assets B.V. Manufacture of tocopheryl acetate
US7153984B2 (en) 2002-11-21 2006-12-26 Dsm Ip Assets B.V. Manufacture of α-tocopherol
KR101154117B1 (ko) * 2003-01-13 2012-06-11 디에스엠 아이피 어셋츠 비.브이. α-토코페릴 아세테이트의 제조방법
CA2638940C (en) * 2008-08-28 2009-09-15 Dalton Chemical Laboratories Inc. Improved synthesis of hexahydrodibenzopyranones
CN102276572B (zh) * 2011-09-14 2013-03-27 重庆大学 一种制备维生素e乙酸酯的方法
PE20211652A1 (es) 2018-03-29 2021-08-24 Dsm Ip Assets Bv Uso novedoso de croman-6-oles sustituidos con cadenas laterales lipofilicas extendidas
WO2021122439A1 (en) 2019-12-19 2021-06-24 Dsm Ip Assets B.V. Formation of alpha tocopherol from 2,3,6-trimethylphenol
CN113083339B (zh) * 2021-04-15 2022-11-08 万华化学(四川)有限公司 一种用于制备维生素e的催化剂及其制备方法和应用
US20240209132A1 (en) 2021-04-28 2024-06-27 Dsm Ip Assets B.V. Coupling of 2,3,5-trimethylhydroquinone and unsaturated alcohols

Family Cites Families (6)

* 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
US2723278A (en) * 1954-01-25 1955-11-08 Hoffmann La Roche Preparation of alpha-tocopherol
CH506516A (de) * 1968-02-27 1971-04-30 Hoffmann La Roche Verfahren zur Herstellung von Chromanolen
US3708505A (en) * 1971-02-25 1973-01-02 Diamond Shamrock Corp Process for preparation of d,l-alpha tocopherol
US5663376A (en) * 1994-07-27 1997-09-02 Eisai Co., Ltd. Process for the preparation of α-tocopherol
JP2002502360A (ja) * 1996-01-29 2002-01-22 ビーエーエスエフ アクチェンゲゼルシャフト ｄｌα―トコフェロールまたは酢酸ｄｌ―α―トコフェリルの製造方法

Also Published As

Publication number Publication date
US6066745A (en) 2000-05-23
ES2264230T3 (es) 2006-12-16
KR19990082913A (ko) 1999-11-25
DE69931421D1 (de) 2006-06-29
EP0949255A1 (en) 1999-10-13
JP2000053673A (ja) 2000-02-22
CN1234402A (zh) 1999-11-10
DE69931421T2 (de) 2006-11-09
CN1181068C (zh) 2004-12-22
EP0949255B1 (en) 2006-05-24
BR9902217A (pt) 2000-05-02
CA2267826A1 (en) 1999-10-06

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