GB277670A - Manufacture of benzanthrone-carboxylic acids - Google Patents

Manufacture of benzanthrone-carboxylic acids

Info

Publication number
GB277670A
GB277670A GB24216/27A GB2421627A GB277670A GB 277670 A GB277670 A GB 277670A GB 24216/27 A GB24216/27 A GB 24216/27A GB 2421627 A GB2421627 A GB 2421627A GB 277670 A GB277670 A GB 277670A
Authority
GB
United Kingdom
Prior art keywords
benzanthrone
carboxylic acids
manufacture
carboxylic acid
methylbenzanthrones
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
GB24216/27A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Publication of GB277670A publication Critical patent/GB277670A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
    • C09B3/02—Benzathrones
    • C09B3/06—Preparation from starting materials already containing the benzanthrone nucleus

Landscapes

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

Abstract

277,670. I. G. Farbenindustrie Akt.- Ges. Sept. 20, 1926, [Convention date]. Benzanthrone carboxylic acids are obtained by oxidizing alkylbenzanthrones in presence of alkaline agents such as caustic alkali. The reaction is applicable whether the alkyl group is in the benzene ring or in the anthraquinone nucleus of the benzanthrone molecule. According to examples, benzanthrone-Bz1-or-Bz2-carboxylic acid and benzanthrone-2-carboxylic acid are obtained by heating the corresponding methylbenzanthrones with powdered caustic potash and nitrobenzene. Specifications 268,830 and 273,774 are referred to.
GB24216/27A 1926-09-20 1927-09-14 Manufacture of benzanthrone-carboxylic acids Expired GB277670A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE277670X 1926-09-20

Publications (1)

Publication Number Publication Date
GB277670A true GB277670A (en) 1928-11-01

Family

ID=6028367

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24216/27A Expired GB277670A (en) 1926-09-20 1927-09-14 Manufacture of benzanthrone-carboxylic acids

Country Status (1)

Country Link
GB (1) GB277670A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4812393A (en) * 1986-01-31 1989-03-14 Eastman Kodak Company Fluorescent dyes and biological and analytical uses thereof
US4927927A (en) * 1986-01-31 1990-05-22 Eastman Kodak Company Fluorescent dyes and biological and analytical uses thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4812393A (en) * 1986-01-31 1989-03-14 Eastman Kodak Company Fluorescent dyes and biological and analytical uses thereof
US4927927A (en) * 1986-01-31 1990-05-22 Eastman Kodak Company Fluorescent dyes and biological and analytical uses thereof

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