EP1334093A4 - Verfahren zur herstellung von dl-alpha-tocopherol in hoher ausbeute - Google Patents

Verfahren zur herstellung von dl-alpha-tocopherol in hoher ausbeute

Info

Publication number
EP1334093A4
EP1334093A4 EP00971854A EP00971854A EP1334093A4 EP 1334093 A4 EP1334093 A4 EP 1334093A4 EP 00971854 A EP00971854 A EP 00971854A EP 00971854 A EP00971854 A EP 00971854A EP 1334093 A4 EP1334093 A4 EP 1334093A4
Authority
EP
European Patent Office
Prior art keywords
tocopherol
alpha
preparing
high yield
yield
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.)
Withdrawn
Application number
EP00971854A
Other languages
English (en)
French (fr)
Other versions
EP1334093A1 (de
Inventor
Jeong-Soo Kim
Heui-Young Cheong
Sijoon Lee
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.)
SK Corp
Original Assignee
SK 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 SK Corp filed Critical SK Corp
Priority claimed from PCT/KR2000/001201 external-priority patent/WO2002034738A1/en
Publication of EP1334093A1 publication Critical patent/EP1334093A1/de
Publication of EP1334093A4 publication Critical patent/EP1334093A4/de
Withdrawn legal-status Critical Current

Links

EP00971854A 2000-10-23 2000-10-23 Verfahren zur herstellung von dl-alpha-tocopherol in hoher ausbeute Withdrawn EP1334093A4 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2000/001201 WO2002034738A1 (en) 2000-10-23 2000-10-23 Method for preparing dl-alpha-tocopherol with high yield

Publications (2)

Publication Number Publication Date
EP1334093A1 EP1334093A1 (de) 2003-08-13
EP1334093A4 true EP1334093A4 (de) 2004-02-04

Family

ID=27606949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00971854A Withdrawn EP1334093A4 (de) 2000-10-23 2000-10-23 Verfahren zur herstellung von dl-alpha-tocopherol in hoher ausbeute

Country Status (3)

Country Link
EP (1) EP1334093A4 (de)
JP (1) JP2004512332A (de)
CN (1) CN1186337C (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103396392B (zh) * 2013-08-10 2014-12-17 吉林北沙制药有限公司 一种维生素e的绿色环保合成方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4942676A (de) * 1972-08-30 1974-04-22
DE2743920A1 (de) * 1976-09-29 1978-03-30 Nisshin Flour Milling Co Verfahren zur herstellung von dl-alpha-tocopherol
EP0677520A1 (de) * 1994-04-12 1995-10-18 Eisai Co., Ltd. Verfahren zur Herstellung von Alpha-Tocopherol Derivaten, und Katalysatoren
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
WO2000017185A1 (fr) * 1998-09-18 2000-03-30 Aventis Animal Nutrition S.A. Procede de preparation de la vitamine e

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS607993B2 (ja) * 1978-01-12 1985-02-28 株式会社クラレ ｄｌ−α−トコフエロ−ルの製造方法
JPS59190987A (ja) * 1983-04-11 1984-10-29 Mitsui Toatsu Chem Inc ｄｌ−α−トコフエロ−ルの製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4942676A (de) * 1972-08-30 1974-04-22
DE2743920A1 (de) * 1976-09-29 1978-03-30 Nisshin Flour Milling Co Verfahren zur herstellung von dl-alpha-tocopherol
EP0677520A1 (de) * 1994-04-12 1995-10-18 Eisai Co., Ltd. Verfahren zur Herstellung von Alpha-Tocopherol Derivaten, und Katalysatoren
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
WO2000017185A1 (fr) * 1998-09-18 2000-03-30 Aventis Animal Nutrition S.A. Procede de preparation de la vitamine e

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 197433, Derwent World Patents Index; Class B02, AN 1974-59043V, XP002263570 *
See also references of WO0234738A1 *

Also Published As

Publication number Publication date
CN1186337C (zh) 2005-01-26
EP1334093A1 (de) 2003-08-13
CN1455775A (zh) 2003-11-12
JP2004512332A (ja) 2004-04-22

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 20030515

AK Designated contracting states

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

RIC1 Information provided on ipc code assigned before grant

Ipc: 7C 07D 311/72 A

A4 Supplementary search report drawn up and despatched

Effective date: 20031219

RBV Designated contracting states (corrected)

Designated state(s): CH DE FR GB LI NL

17Q First examination report despatched

Effective date: 20061117

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20070327