GB786925A - Thiaxanthone quinone - Google Patents

Thiaxanthone quinone

Info

Publication number
GB786925A
GB786925A GB32975/55A GB3297555A GB786925A GB 786925 A GB786925 A GB 786925A GB 32975/55 A GB32975/55 A GB 32975/55A GB 3297555 A GB3297555 A GB 3297555A GB 786925 A GB786925 A GB 786925A
Authority
GB
United Kingdom
Prior art keywords
thiaxanthone
quinone
dihydroxythiaxanthone
preparation
carried out
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
GB32975/55A
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of GB786925A publication Critical patent/GB786925A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C46/00Preparation of quinones
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C50/00Quinones

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The invention comprises 1 : 4-thiaxanthone quinone and the preparation thereof by oxidizing 1 : 4-dihydroxythiaxanthone with bromic acid or salts thereof. The preparation may be carried out within the temperature range 0-100 DEG C. and preferably at room temperature. The bromic acid is preferably employed as an alkali metal salt, e.g. the potassium salt, in concentrated aqueous solution. The reaction may be carried out by adding an aqueous solution of the bromate with stirring into a suspension or solution of the dihydroxythiaxanthone in a dilutent or solvent such as acetic acid.
GB32975/55A 1954-11-17 1955-11-17 Thiaxanthone quinone Expired GB786925A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE786925X 1954-11-17

Publications (1)

Publication Number Publication Date
GB786925A true GB786925A (en) 1957-11-27

Family

ID=6699127

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32975/55A Expired GB786925A (en) 1954-11-17 1955-11-17 Thiaxanthone quinone

Country Status (1)

Country Link
GB (1) GB786925A (en)

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