FR2057593A5 - Pure 4-bromo-3-hydroxy-quinophthalone - prodn - Google Patents

Pure 4-bromo-3-hydroxy-quinophthalone - prodn

Info

Publication number
FR2057593A5
FR2057593A5 FR6929639A FR6929639A FR2057593A5 FR 2057593 A5 FR2057593 A5 FR 2057593A5 FR 6929639 A FR6929639 A FR 6929639A FR 6929639 A FR6929639 A FR 6929639A FR 2057593 A5 FR2057593 A5 FR 2057593A5
Authority
FR
France
Prior art keywords
prodn
quinophthalone
bromo
hydroxy
pure
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
FR6929639A
Other languages
French (fr)
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst 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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Priority to FR6929639A priority Critical patent/FR2057593A5/en
Application granted granted Critical
Publication of FR2057593A5 publication Critical patent/FR2057593A5/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
    • C09B25/00—Quinophthalones

Abstract

Cpds:- is prepd. by reacting 3-hydroxyquinophthalone with Br2 in H2SO4 of 80-100% strength at 0-40 degrees C (pref. 20-40 degrees C). The cpd. is a known dye. No. purification is necessary after isolation by pouring into ice water, filtering, washing and drying.
FR6929639A 1969-08-29 1969-08-29 Pure 4-bromo-3-hydroxy-quinophthalone - prodn Expired FR2057593A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR6929639A FR2057593A5 (en) 1969-08-29 1969-08-29 Pure 4-bromo-3-hydroxy-quinophthalone - prodn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6929639A FR2057593A5 (en) 1969-08-29 1969-08-29 Pure 4-bromo-3-hydroxy-quinophthalone - prodn

Publications (1)

Publication Number Publication Date
FR2057593A5 true FR2057593A5 (en) 1971-05-21

Family

ID=9039547

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6929639A Expired FR2057593A5 (en) 1969-08-29 1969-08-29 Pure 4-bromo-3-hydroxy-quinophthalone - prodn

Country Status (1)

Country Link
FR (1) FR2057593A5 (en)

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Legal Events

Date Code Title Description
ST Notification of lapse