GB270840A - Manufacture of anthraquinone derivatives - Google Patents

Manufacture of anthraquinone derivatives

Info

Publication number
GB270840A
GB270840A GB542126A GB542126A GB270840A GB 270840 A GB270840 A GB 270840A GB 542126 A GB542126 A GB 542126A GB 542126 A GB542126 A GB 542126A GB 270840 A GB270840 A GB 270840A
Authority
GB
United Kingdom
Prior art keywords
anthraquinone
bis
heating
aminoarylanthracenes
toluidine
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
GB542126A
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
Priority to GB542126A priority Critical patent/GB270840A/en
Publication of GB270840A publication Critical patent/GB270840A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C225/00—Compounds containing amino groups and doubly—bound oxygen atoms bound to the same carbon skeleton, at least one of the doubly—bound oxygen atoms not being part of a —CHO group, e.g. amino ketones
    • C07C225/22—Compounds containing amino groups and doubly—bound oxygen atoms bound to the same carbon skeleton, at least one of the doubly—bound oxygen atoms not being part of a —CHO group, e.g. amino ketones having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton

Abstract

270,840. Imray, O. Y., (I. G, Farbenindustrie Akt.-Ges.). Feb. 25, 1926. Bis-aminoarylanthrones and bis-aminoarylanthracenes are produced by heating anthraquinone or a homologue thereof with a salt of an aromatic amine having no substituent in the p-position to the amino group. When working for a short time at a temperature below 180‹ C., the firstmentioned products are principally obtained, the compound from anthraquinone and aniline being probably At temperatures above 185‹ C. the products are principally the bis-aminoarylanthracenes of the probable formula According to examples (1) anthraquinone is heated at 175‹ C. with hydrochloride of aniline, o-toluidine, or o-anisidine in presence of an excess of the free base; after rendering alkaline and steam distilling the residue is dissolved in acid and the bisaminoarylanthrone precipitated by alkali : (2) the heating is carried out at 180-185‹ C. and the product diluted with alcohol; the residue consists of the hydrochloride of the bis-aminoarylanthracene which can be decomposed by boiling with water. 2-Methylanthraquinone is also specified as parent material. Magenta is formed as a bye-product when heating anthraquinone with o-toluidine and its bydrochloride.
GB542126A 1926-02-25 1926-02-25 Manufacture of anthraquinone derivatives Expired GB270840A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB542126A GB270840A (en) 1926-02-25 1926-02-25 Manufacture of anthraquinone derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB542126A GB270840A (en) 1926-02-25 1926-02-25 Manufacture of anthraquinone derivatives

Publications (1)

Publication Number Publication Date
GB270840A true GB270840A (en) 1927-05-19

Family

ID=9795862

Family Applications (1)

Application Number Title Priority Date Filing Date
GB542126A Expired GB270840A (en) 1926-02-25 1926-02-25 Manufacture of anthraquinone derivatives

Country Status (1)

Country Link
GB (1) GB270840A (en)

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