GB1327011A - Production of flavanthrenes - Google Patents

Production of flavanthrenes

Info

Publication number
GB1327011A
GB1327011A GB57371A GB57371A GB1327011A GB 1327011 A GB1327011 A GB 1327011A GB 57371 A GB57371 A GB 57371A GB 57371 A GB57371 A GB 57371A GB 1327011 A GB1327011 A GB 1327011A
Authority
GB
United Kingdom
Prior art keywords
solution
flavanthrene
dianthraquinonyl
jan
formula
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
GB57371A
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik 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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of GB1327011A publication Critical patent/GB1327011A/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
    • C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
    • C09B5/02—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic ring being only condensed in peri position
    • C09B5/20—Flavanthrones

Landscapes

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

Abstract

1327011 Flavanthrene BADISCHE ANILIN - & SODA-FABRIK AG 6 Jan 1971 [7 Jan 1970] 573/71 Heading C4P Flavanthrenes having the formula wherein X is a hydrogen or halogen atom, are obtained by subjecting a 2,2<SP>1</SP>-diacylamino-1,1<SP>1</SP>- dianthraquinonyl of formula where R is an alkyl group having 1-6 carbon atoms or an unsubstituted aryl group, to intramolecular condensation under the action of H 2 SO 4 having a concentration of 80-100% by wt. The treatment is advantageously carried out at 20-70‹ C., the dianthraquinonyl derivative preferably being added to 93-99% sulphuric acid to give a pink solution which is stirred until an intense red solution is obtained which vats with a blue colour. The solution is then poured into water to precipitate the flavanthrene. The products are yellow vat dyes.
GB57371A 1970-01-07 1971-01-06 Production of flavanthrenes Expired GB1327011A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702000510 DE2000510C3 (en) 1970-01-07 1970-01-07 Process for the production of flavanthrenes

Publications (1)

Publication Number Publication Date
GB1327011A true GB1327011A (en) 1973-08-15

Family

ID=5759145

Family Applications (1)

Application Number Title Priority Date Filing Date
GB57371A Expired GB1327011A (en) 1970-01-07 1971-01-06 Production of flavanthrenes

Country Status (4)

Country Link
CH (1) CH550228A (en)
DE (1) DE2000510C3 (en)
FR (1) FR2075973B3 (en)
GB (1) GB1327011A (en)

Also Published As

Publication number Publication date
FR2075973B3 (en) 1973-10-19
DE2000510B2 (en) 1974-09-19
DE2000510A1 (en) 1971-07-15
DE2000510C3 (en) 1975-05-15
CH550228A (en) 1974-06-14
FR2075973A7 (en) 1971-10-15

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years