GB191322980A - Process for Producing 1.2.4-purpurine-3-carboxylic Acid. - Google Patents

Process for Producing 1.2.4-purpurine-3-carboxylic Acid.

Info

Publication number
GB191322980A
GB191322980A GB191322980DA GB191322980A GB 191322980 A GB191322980 A GB 191322980A GB 191322980D A GB191322980D A GB 191322980DA GB 191322980 A GB191322980 A GB 191322980A
Authority
GB
United Kingdom
Prior art keywords
carboxylic acid
purpurine
producing
dioxyanthraquinone
oxidizing
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
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
Farbenfabriken Vorm Friedr Bayer and Co
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 GB191229506D external-priority patent/GB191229506A/en
Application filed by Farbenfabriken Vorm Friedr Bayer and Co filed Critical Farbenfabriken Vorm Friedr Bayer and Co
Application granted granted Critical
Publication of GB191322980A publication Critical patent/GB191322980A/en
Expired legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

22,980. Farbenfabriken vorm. F. Bayer & Co. Oct. 11. [Addition to 29,506/12.] 1:2:4-Trioxyanthraquinone-3-carboxylic acid is obtained by oxidizing 1: 4-dioxyanthraquinone- 3-carboxylic acid, for example bv means of manganese dioxide in presence of sulphuric acid. 1:4-Dioxyanthraquinone-3-carboxylic acid is obtained by oxidizing 1 :4-dioxy-3-methylanthraquinone.
GB191322980D 1912-12-21 1913-12-11 Process for Producing 1.2.4-purpurine-3-carboxylic Acid. Expired GB191322980A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191229506D GB191229506A (en) 1911-12-27 1912-12-21 Process for the Production of 1.2.4-purpurine-3-carboxylic Acid.

Publications (1)

Publication Number Publication Date
GB191322980A true GB191322980A (en) 1914-07-02

Family

ID=34358625

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191322980D Expired GB191322980A (en) 1912-12-21 1913-12-11 Process for Producing 1.2.4-purpurine-3-carboxylic Acid.

Country Status (1)

Country Link
GB (1) GB191322980A (en)

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