GB191229506A - Process for the Production of 1.2.4-purpurine-3-carboxylic Acid. - Google Patents

Process for the Production of 1.2.4-purpurine-3-carboxylic Acid.

Info

Publication number
GB191229506A
GB191229506A GB191229506DA GB191229506A GB 191229506 A GB191229506 A GB 191229506A GB 191229506D A GB191229506D A GB 191229506DA GB 191229506 A GB191229506 A GB 191229506A
Authority
GB
United Kingdom
Prior art keywords
carboxylic acid
purpurine
production
dioxyanthraquinone
acid
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
Application filed by Farbenfabriken Vorm Friedr Bayer and Co filed Critical Farbenfabriken Vorm Friedr Bayer and Co
Application granted granted Critical
Publication of GB191229506A publication Critical patent/GB191229506A/en
Priority to GB191322980D priority Critical patent/GB191322980A/en
Expired legal-status Critical Current

Links

Abstract

29,506. Farbenfabriken vorm. F. Bayer & Co. Dec. 27, 1911, [Convention date]. 1:2:4-Trioxyanthraquinone-3-carboxylic acid is obtained by treating 1: 2-dioxyanthraquinone- 3-carboxylic acid with oxidizing-agents, for example, manganese dioxide in concentrated sulphuric acid; it is identical with the pseudopurpurin of madder. 1:2-Dioxyanthraquinone-3-carboxylic acid is obtained by fusing 2-halogenanthraquinone-3- carboxylic acid with caustic alkali.
GB191229506D 1911-12-27 1912-12-21 Process for the Production of 1.2.4-purpurine-3-carboxylic Acid. Expired GB191229506A (en)

Priority Applications (1)

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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE191229506X 1911-12-27

Publications (1)

Publication Number Publication Date
GB191229506A true GB191229506A (en) 1913-05-01

Family

ID=32522819

Family Applications (1)

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

Country Status (1)

Country Link
GB (1) GB191229506A (en)

Similar Documents

Publication Publication Date Title
GB191229506A (en) Process for the Production of 1.2.4-purpurine-3-carboxylic Acid.
GB191416494A (en) Improvements in, or connected with, the Manufacture of Hydrogen.
GB191322980A (en) Process for Producing 1.2.4-purpurine-3-carboxylic Acid.
GB190908421A (en) An Improvement in the Manufacture of Ortho-sulphamidobenzoic Acid.
GB191202313A (en) Process for the Production of a Substance similar to Caoutchouc.
GB530173A (en) Process for the production of hydroxylamine salts
GB191215753A (en) Manufacture and Production of Vat Dyes of the Anthracene Series.
GB191102355A (en) Improvements in and relating to the Manufacture and Production of 1-naphthol-2-sulphonic Acid.
GB191409472A (en) Manufacture and Production of Ureas of the Napthalene Series.
GB191223629A (en) An Improved Process for Producing Solutions of Insoluble Gums.
GB191315557A (en) Manufacture and Production of New Colour Lakes.
GB191310791A (en) Manufacture of Aldehydes of the Anthraquinone Series.
GB190801842A (en) Improvements in the Production of Titanium-nitrogen Compounds.
GB191318430A (en) Process for Producing Sulphochlorides of Phenol-carboxylic Acids and of their Derivatives.
GB191118812A (en) Manufacture and Production of Bromodiethylacetylures.
GB190906831A (en) Improvements in and relating to the Manufacture and Production of 1.8-diaminonaphthalene-4-sulphonic Acid.
GB190704244A (en) A New or Improved Process for the Preparation of a Dentifrice.
GB191420615A (en) The Manufacture and Production of Diamino-diaryl-ketones and N-alkyl Substituted Diamino-diaryl-thioketones.
GB191410605A (en) Process for the Production of Solutions of Cellulose or Materials Containing Cellulose.
GB191511486A (en) Process for the Production of Ammonia.
GB191004898A (en) Improvements in and relating to the Manufacture and Production of Halogen Substituted Anthraquinones.
GB191111701A (en) Improvements in and relating to the Manufacture and Production of Manganates.
GB191203318A (en) Improvements in and relating to the Manufacture and Production of Anthracene Monosulphonic Acid.
GB190727932A (en) Improved Manganese Salt for Oxidation Purposes and Process for Producing the same.
GB191103847A (en) Manufacture of New Derivatives of Oxyaryl-arsinic Acids.