GB1001712A - A process for the preparation of 2,3-dicyano-5,6-dibromo-benzoquinone and this compound when thus prepared - Google Patents

A process for the preparation of 2,3-dicyano-5,6-dibromo-benzoquinone and this compound when thus prepared

Info

Publication number
GB1001712A
GB1001712A GB38597/64A GB3859764A GB1001712A GB 1001712 A GB1001712 A GB 1001712A GB 38597/64 A GB38597/64 A GB 38597/64A GB 3859764 A GB3859764 A GB 3859764A GB 1001712 A GB1001712 A GB 1001712A
Authority
GB
United Kingdom
Prior art keywords
dicyano
benzoquinone
dibromo
prepared
compound
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
GB38597/64A
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.)
Sanofi Aventis France
Original Assignee
Roussel Uclaf SA
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 Roussel Uclaf SA filed Critical Roussel Uclaf SA
Publication of GB1001712A publication Critical patent/GB1001712A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07J—STEROIDS
    • C07J5/00—Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C255/00—Carboxylic acid nitriles
    • C07C255/45—Carboxylic acid nitriles having cyano groups bound to carbon atoms of rings other than six-membered aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07J—STEROIDS
    • C07J75/00—Processes for the preparation of steroids in general
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/582—Recycling of unreacted starting or intermediate materials

Landscapes

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

Abstract

2,3 - Dicyano - 5,6 - dibromobenzoquinone is obtained in a process in which 2,3-dicyano-p-benzohydroquinone is subjected to the action of N-bromo-succinimide in an alcoholic solvent medium at a temperature at about 50 DEG C. so as to form 2,3-dicyano-5,6-dibromobenzoquinone.
GB38597/64A 1961-07-19 1962-07-19 A process for the preparation of 2,3-dicyano-5,6-dibromo-benzoquinone and this compound when thus prepared Expired GB1001712A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR868385A FR1313082A (en) 1961-07-19 1961-07-19 New process for preparing a substituted benzoquinone

Publications (1)

Publication Number Publication Date
GB1001712A true GB1001712A (en) 1965-08-18

Family

ID=8759622

Family Applications (2)

Application Number Title Priority Date Filing Date
GB38597/64A Expired GB1001712A (en) 1961-07-19 1962-07-19 A process for the preparation of 2,3-dicyano-5,6-dibromo-benzoquinone and this compound when thus prepared
GB27915/62A Expired GB1001711A (en) 1961-07-19 1962-07-19 Processes for the dehydrogenation of steroid compounds, and the unsaturated steroid compounds thus produced

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB27915/62A Expired GB1001711A (en) 1961-07-19 1962-07-19 Processes for the dehydrogenation of steroid compounds, and the unsaturated steroid compounds thus produced

Country Status (2)

Country Link
FR (1) FR1313082A (en)
GB (2) GB1001712A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103804268A (en) * 2013-12-29 2014-05-21 陕西师范大学 Method for efficiently synthesizing functional enamine with high regioselectivity

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103804268A (en) * 2013-12-29 2014-05-21 陕西师范大学 Method for efficiently synthesizing functional enamine with high regioselectivity

Also Published As

Publication number Publication date
FR1313082A (en) 1962-12-28
GB1001711A (en) 1965-08-18

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