GB1334273A - Process for the production of 1,5-dihydroxyanthraquinone - Google Patents

Process for the production of 1,5-dihydroxyanthraquinone

Info

Publication number
GB1334273A
GB1334273A GB2159971A GB2159971A GB1334273A GB 1334273 A GB1334273 A GB 1334273A GB 2159971 A GB2159971 A GB 2159971A GB 2159971 A GB2159971 A GB 2159971A GB 1334273 A GB1334273 A GB 1334273A
Authority
GB
United Kingdom
Prior art keywords
dihydroxyanthraquinone
production
sandoz
heading
condensing
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
GB2159971A
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.)
Sandoz AG
Original Assignee
Sandoz 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 Sandoz AG filed Critical Sandoz AG
Publication of GB1334273A publication Critical patent/GB1334273A/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
    • C09B1/04—Preparation by synthesis of the nucleus

Abstract

1334273 Production of 1,5-dihydroxyanthraquinone SANDOZ Ltd 19 April 1971 [2 March 1970] 21599/71 Heading C2C 1,5-Dihydroxyanthraquinone is obtained by condensing m-hydroxy benzoic acid by heating in an aluminium chloride-sodium chloride melt.
GB2159971A 1970-03-02 1971-04-19 Process for the production of 1,5-dihydroxyanthraquinone Expired GB1334273A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH299570A CH527148A (en) 1970-03-02 1970-03-02 Process for the preparation of 1,5-dihydroxyanthraquinone

Publications (1)

Publication Number Publication Date
GB1334273A true GB1334273A (en) 1973-10-17

Family

ID=4246274

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2159971A Expired GB1334273A (en) 1970-03-02 1971-04-19 Process for the production of 1,5-dihydroxyanthraquinone

Country Status (10)

Country Link
BE (1) BE763412A (en)
BR (1) BR7101213D0 (en)
CA (1) CA946384A (en)
CH (1) CH527148A (en)
DE (1) DE2108575A1 (en)
ES (1) ES388757A1 (en)
FR (1) FR2084017A5 (en)
GB (1) GB1334273A (en)
NL (1) NL7102672A (en)
SU (1) SU383271A3 (en)

Also Published As

Publication number Publication date
BE763412A (en) 1971-07-16
BR7101213D0 (en) 1973-05-03
ES388757A1 (en) 1974-03-01
DE2108575A1 (en) 1971-09-16
FR2084017A5 (en) 1971-12-17
CH527148A (en) 1972-08-31
NL7102672A (en) 1971-09-06
SU383271A3 (en) 1973-05-25
CA946384A (en) 1974-04-30

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees