GB299333A - Improvements in and relating to the production of dyestuff intermediates - Google Patents

Improvements in and relating to the production of dyestuff intermediates

Info

Publication number
GB299333A
GB299333A GB1050127A GB1050127A GB299333A GB 299333 A GB299333 A GB 299333A GB 1050127 A GB1050127 A GB 1050127A GB 1050127 A GB1050127 A GB 1050127A GB 299333 A GB299333 A GB 299333A
Authority
GB
United Kingdom
Prior art keywords
solution
reducing
chloranthraquinone
aminoanthraquinone
amino
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
GB1050127A
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.)
Scottish Dyes Ltd
Original Assignee
Scottish Dyes Ltd
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 Scottish Dyes Ltd filed Critical Scottish Dyes Ltd
Priority to GB1050127A priority Critical patent/GB299333A/en
Priority to DES85036D priority patent/DE553039C/en
Publication of GB299333A publication Critical patent/GB299333A/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
    • C09B1/00—Dyes with anthracene nucleus not condensed with any other ring
    • C09B1/16—Amino-anthraquinones
    • C09B1/20—Preparation from starting materials already containing the anthracene nucleus
    • C09B1/22—Dyes with unsubstituted amino groups
    • 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
    • C07C225/24—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 the carbon skeleton containing carbon atoms of quinone rings
    • C07C225/26—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 the carbon skeleton containing carbon atoms of quinone rings having amino groups bound to carbon atoms of quinone rings or of condensed ring systems containing quinone rings
    • C07C225/32—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 the carbon skeleton containing carbon atoms of quinone rings having amino groups bound to carbon atoms of quinone rings or of condensed ring systems containing quinone rings of condensed quinone ring systems formed by at least three rings
    • C07C225/34—Amino anthraquinones

Landscapes

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

Abstract

299,333. Smith, W., Thomas, J., and Scottish Dyes Ltd. April 19, 1927. Aminoanthraquinones.-Halogen atoms in the 1-position are removed from halogenated aminoanthraquinones by treating them with alkaline reducing agents, the leuco body formed being subsequently oxidized. As reducing agents, metals, hydrosulphites and glucose, in solutions of hydroxides of alkali or alkaline earth metals, are specified. The products may be purified by recrystallization from an organic solvent or by precipitation from their solutions in sulphuric acid. In examples, (1) 2-aminoanthraquinone is chlorinated in nitrobenzene solution, and the 1 : 3-dichlor-2-aminonanthraquinone formed is boiled with a solution of caustic soda and sodium hydrosulphite; air is then passed through the solution to precipitate 2-amino-3- chloranthraquinone, which is purified by dissolving in concentrated sulphuric acid, adding water to precipitate the sulphate, and hydrolyzing the latter by boiling with water, (2) 2-amino-3- chloranthraquinone is also obtained (a) by reducing 1 : 3-dichlor-2-aminoanthraquinone with caustic potash and glucose, (b) by reducing 1-brom- 2-amino-3-chloranthraquinone with a solution containing lime and sodium hydrosuphite, and (c) by reducing 1-brom-2-amino-3-chloranthraquinone with caustic soda solution and zinc dust; in each case the leuco bodies first formed are oxidized by passing air through the solutions, and (3) 2-aminoanthraquinone is obtained by reducing 1-chlor-2-aminoanthraquinone with a solution of caustic potash and glucose and passing air through the solution to oxidize, the leuco compound.
GB1050127A 1927-04-19 1927-04-19 Improvements in and relating to the production of dyestuff intermediates Expired GB299333A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1050127A GB299333A (en) 1927-04-19 1927-04-19 Improvements in and relating to the production of dyestuff intermediates
DES85036D DE553039C (en) 1927-04-19 1928-04-14 Process for the preparation of aminoanthraquinones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1050127A GB299333A (en) 1927-04-19 1927-04-19 Improvements in and relating to the production of dyestuff intermediates

Publications (1)

Publication Number Publication Date
GB299333A true GB299333A (en) 1928-10-19

Family

ID=9968996

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1050127A Expired GB299333A (en) 1927-04-19 1927-04-19 Improvements in and relating to the production of dyestuff intermediates

Country Status (2)

Country Link
DE (1) DE553039C (en)
GB (1) GB299333A (en)

Also Published As

Publication number Publication date
DE553039C (en) 1932-06-21

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