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GB1488314A - Process for the manufacture of hydroxyanthraquinones - Google Patents

Process for the manufacture of hydroxyanthraquinones

Info

Publication number
GB1488314A
GB1488314A GB3521075A GB3521075A GB1488314A GB 1488314 A GB1488314 A GB 1488314A GB 3521075 A GB3521075 A GB 3521075A GB 3521075 A GB3521075 A GB 3521075A GB 1488314 A GB1488314 A GB 1488314A
Authority
GB
United Kingdom
Prior art keywords
hydroxyanthraquinones
aug
alkali metal
aprotic solvents
dipolar aprotic
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
GB3521075A
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.)
Novartis AG
Original Assignee
Ciba Geigy 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 Ciba Geigy AG filed Critical Ciba Geigy AG
Publication of GB1488314A publication Critical patent/GB1488314A/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
    • C09B1/02—Hydroxy-anthraquinones; Ethers or esters thereof
    • C09B1/06—Preparation from starting materials already containing the anthracene nucleus
    • C09B1/08—Dyes containing only OH-groups

Landscapes

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

Abstract

1488314 Hydroxyanthraquinones CIBAGEIGY AG 26 Aug 1975 [27 Aug 1974] 35210/75 Heading C2C Hydroxyanthraquinones are prepared by reacting nitroanthraquinones with aqueous solutions of alkali metal hydroxides in the presence of dipolar aprotic solvents at above 70‹ C. The preferred dipolar aprotic solvents contain a tertiary acid amide group or a group of the formula -SO 2 - or -SO-, and the preferred alkali metal hydroxides are sodium and potassium hydroxides.
GB3521075A 1974-08-27 1975-08-26 Process for the manufacture of hydroxyanthraquinones Expired GB1488314A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1166174A CH592595A5 (en) 1974-08-27 1974-08-27

Publications (1)

Publication Number Publication Date
GB1488314A true GB1488314A (en) 1977-10-12

Family

ID=4375643

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3521075A Expired GB1488314A (en) 1974-08-27 1975-08-26 Process for the manufacture of hydroxyanthraquinones

Country Status (3)

Country Link
CH (1) CH592595A5 (en)
DE (1) DE2537798A1 (en)
GB (1) GB1488314A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4371694A (en) * 1978-11-07 1983-02-01 Brent Chemicals International Limited Aromatic compounds and their manufacture

Also Published As

Publication number Publication date
DE2537798A1 (en) 1976-03-11
CH592595A5 (en) 1977-10-31

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee