GB1424004A - Production of hydroquinone derivatives - Google Patents

Production of hydroquinone derivatives

Info

Publication number
GB1424004A
GB1424004A GB5774072A GB5774072A GB1424004A GB 1424004 A GB1424004 A GB 1424004A GB 5774072 A GB5774072 A GB 5774072A GB 5774072 A GB5774072 A GB 5774072A GB 1424004 A GB1424004 A GB 1424004A
Authority
GB
United Kingdom
Prior art keywords
formula
methyl
hydroquinone
phytyl
dimethoxy
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
Application number
GB5774072A
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.)
Eisai Co Ltd
Original Assignee
Eisai Co Ltd
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
Priority claimed from JP1558372A external-priority patent/JPS5029468B2/ja
Priority claimed from JP1644972A external-priority patent/JPS507063B2/ja
Application filed by Eisai Co Ltd filed Critical Eisai Co Ltd
Publication of GB1424004A publication Critical patent/GB1424004A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F15/00Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
    • C07F15/04Nickel compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1424004 Hydroquinone derivatives; vitamin K EISAI CO Ltd 14 Dec 1972 [16 Feb 1972 18 Feb 1972] 57740/72 Headings C2C and C2V A process for preparing a hydroquinone derivative of the Formula I wherein R<SP>1</SP> and R<SP>2</SP> are methoxy groups or, together with the carbon atoms to which they are attached, constitute a benzene ring; A and B are hydrogen atoms or together a direct bond and n is 0 or an integer from 1 to 9 comprises condensing a 2-halo-3-methyl-1,4-hydroquinone diacetate of the Formula II wherein R<SP>1</SP> and R<SP>2</SP> have the meanings already given and X is a halogen atom with an allyl halonickel #-complex of the Formula III where A, B, X and n have the meanings already given. The invention also comprises the compounds of Formula II defined above. The product of Formula I may be converted to the corresponding benzoquinone derivative by deacetylation and oxidation. The examples describe the preparation of the diacetates of dihydrovitamins K 1 , K 2(20) and K 2(5) , and of 2,3-dimethoxy-5-methyl-6-prenyl-, -6-geranyl-, - 6 - nonoprenyl -, - 6 - decaprenyl - and - 6 - phytyl-1,4-hydroquinones. The compound of Formula II may be prepared by reductive acetylation from the corresponding benzoquinone, e.g. 2,3-dimethoxy-5-methyl-6-bromo- 1,4-dihydroquinone diacetate is obtained by reacting the corresponding benzoquinone with acetic anhydride and zinc dust. Nickel complexes used in the process are obtained by reacting appropriate bromides, e.g. phytyl and geranyl bromides, with a benzene solution of nickel carbonyl.
GB5774072A 1972-02-16 1972-12-14 Production of hydroquinone derivatives Expired GB1424004A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1558372A JPS5029468B2 (en) 1972-02-16 1972-02-16
JP1644972A JPS507063B2 (en) 1972-02-18 1972-02-18

Publications (1)

Publication Number Publication Date
GB1424004A true GB1424004A (en) 1976-02-04

Family

ID=26351760

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5774072A Expired GB1424004A (en) 1972-02-16 1972-12-14 Production of hydroquinone derivatives

Country Status (8)

Country Link
AR (2) AR197481A1 (en)
CH (1) CH575904A5 (en)
DE (1) DE2258520A1 (en)
ES (2) ES409092A1 (en)
FR (1) FR2172087B1 (en)
GB (1) GB1424004A (en)
HU (1) HU165681B (en)
NL (1) NL7217109A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015018858A1 (en) * 2013-08-08 2015-02-12 Kappa Bioscience As Compositions comprising vitamin k derivatives and salts
US10159687B2 (en) 2012-03-02 2018-12-25 Kappa Bioscience As Prodrugs of vitamin K

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4466981A (en) * 1982-10-27 1984-08-21 Syntex (U.S.A.) Inc. Naphthalene anti-psoriatic agents
IT1284873B1 (en) * 1996-07-26 1998-05-22 Idi Farmaceutici Spa STABLE DERIVATIVES OF UBIQUINOL PROCEDURES FOR THEIR PRODUCTION AND PHARMACEUTICAL USE

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10159687B2 (en) 2012-03-02 2018-12-25 Kappa Bioscience As Prodrugs of vitamin K
WO2015018858A1 (en) * 2013-08-08 2015-02-12 Kappa Bioscience As Compositions comprising vitamin k derivatives and salts
CN105492073A (en) * 2013-08-08 2016-04-13 卡帕生物科学研究院 Provitamins
AU2014304510B2 (en) * 2013-08-08 2017-03-16 Kappa Bioscience As Compositions comprising vitamin K derivatives and salts
CN105492073B (en) * 2013-08-08 2019-06-28 卡帕生物科学研究院 Provitamin

Also Published As

Publication number Publication date
HU165681B (en) 1974-10-28
AR199334A1 (en) 1974-08-23
AR197481A1 (en) 1974-04-15
FR2172087B1 (en) 1977-01-28
NL7217109A (en) 1973-08-20
FR2172087A1 (en) 1973-09-28
ES409092A1 (en) 1976-03-01
ES437353A1 (en) 1977-04-01
DE2258520A1 (en) 1973-08-23
CH575904A5 (en) 1976-05-31

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19921213