GB153055A - Improvements in the manufacture of anthraquinone derivatives - Google Patents

Improvements in the manufacture of anthraquinone derivatives

Info

Publication number
GB153055A
GB153055A GB1028518A GB1028518A GB153055A GB 153055 A GB153055 A GB 153055A GB 1028518 A GB1028518 A GB 1028518A GB 1028518 A GB1028518 A GB 1028518A GB 153055 A GB153055 A GB 153055A
Authority
GB
United Kingdom
Prior art keywords
methylanthraquinone
nitrobenzene
aldehyde
amino
potassium carbonate
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
GB1028518A
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.)
Sanofi Aventis Deutschland GmbH
Original Assignee
Leopold Cassella et Cie GmbH
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 Leopold Cassella et Cie GmbH filed Critical Leopold Cassella et Cie GmbH
Priority to GB1028518A priority Critical patent/GB153055A/en
Publication of GB153055A publication Critical patent/GB153055A/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

Landscapes

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

Abstract

Condensation products, probably azomethine compounds, are obtained by heating 1-amino-2-methylanthraquinone or its substitution products, or isomeric amino-2-methylanthraquinones, or 2-methylanthraquinone itself, with aromatic nitro compounds in the presence of alkaline reagents; primary aromatic amines may be added to the reaction mixture. The products are vat dyestuffs, and may be hydrolyzed by acids to give 1-aminoanthraquinone-2-aldehyde, or its substitution products or isomers, or anthraquinone-2-aldehyde, respectively. According to examples, condensation products are obtained by heating (1) 1-amino-2-methylanthraquinone with nitrobenzene and potassium carbonate or with nitrobenzene, aniline, and potassium acetate or caustic soda; (2) 1-amino-2-methylanthraquinone with m-nitraniline, naphthalene, and potassium carbonate; (3) 1-amino-2-methylanthraquinone with b -naphthylamine, nitrobenzene, and potassium carbonate; (4) 4-p-toluido - 1 - amino - 2 - methylanthraquinone, nitrobenzene, aniline, and potassium acetate; (5) 1 : 5-diamino-2-methylanthraquinone, nitrobenzene, aniline, and potassium carbonate; (6) 3-amino-2-methylanthraquinone, nitrobenzene, aniline, and potassium carbonate; (7) 2-methylanthraquinone, nitrobenzene, aniline, and potassium carbonate. Examples are also given of the preparation of 1-aminoanthraquinone-2-aldehyde, 4-p-toluido-1-aminoanthraquinone-2-aldehyde, 1 : 5-diaminoanthraquinone-2-aldehyde, 3-aminoanthraquinone-2-aldehyde, and anthraquinone-2-aldehyde from these condensation products. Specifications 7194/01, 24883/10, and 8917/14 are referred to.
GB1028518A 1918-06-21 1918-06-21 Improvements in the manufacture of anthraquinone derivatives Expired GB153055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1028518A GB153055A (en) 1918-06-21 1918-06-21 Improvements in the manufacture of anthraquinone derivatives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1028518A GB153055A (en) 1918-06-21 1918-06-21 Improvements in the manufacture of anthraquinone derivatives

Publications (1)

Publication Number Publication Date
GB153055A true GB153055A (en) 1920-11-04

Family

ID=9965028

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1028518A Expired GB153055A (en) 1918-06-21 1918-06-21 Improvements in the manufacture of anthraquinone derivatives

Country Status (1)

Country Link
GB (1) GB153055A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0048886A1 (en) * 1980-09-30 1982-04-07 Siemens Aktiengesellschaft Liquid-crystal composition containing a pleochroic anthraquinone dye, and process for the production of such a dye

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0048886A1 (en) * 1980-09-30 1982-04-07 Siemens Aktiengesellschaft Liquid-crystal composition containing a pleochroic anthraquinone dye, and process for the production of such a dye

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