GB448180A - Improvements in the manufacture and production of compounds of the coeroxene and coerbioxene series - Google Patents

Improvements in the manufacture and production of compounds of the coeroxene and coerbioxene series

Info

Publication number
GB448180A
GB448180A GB3360934A GB3360934A GB448180A GB 448180 A GB448180 A GB 448180A GB 3360934 A GB3360934 A GB 3360934A GB 3360934 A GB3360934 A GB 3360934A GB 448180 A GB448180 A GB 448180A
Authority
GB
United Kingdom
Prior art keywords
coeroxonol
dichlor
tert
dimethyl
dimethylcoeroxonol
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
GB3360934A
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.)
Coutts & Co
Original Assignee
Coutts & Co
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 Coutts & Co filed Critical Coutts & Co
Priority to GB3360934A priority Critical patent/GB448180A/en
Publication of GB448180A publication Critical patent/GB448180A/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
    • C09B5/18—Coeroxene; Coerthiene; Coeramidene; Derivatives thereof

Landscapes

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

Abstract

Coeroxenes and coerbioxenes are obtained by reducing coeroxonols or coeroxenols with reactive hydrogen in an alkaline medium until the resulting compounds are practically insoluble in alkalies. Reducing agents, which develop nascent hydrogen specified are aluminium, zinc, tin, or lead in caustic alkaline or ammoniacal solutions. Organic solvents, such as alcohol or acetone, may be added. In examples, the following compounds are reduced with zinc dust and alkali: (1) 4.14-dimethylcoeroxonol or coeroxonol; (3) 14.20-dimethylcoer-bioxenediol-(9.10); (4) 4.14-di-tert.-butylcoeroxonol; (5) 3.13-(or 3.15-) dimethylcoeroxonol or a mixture of 3.13- and 4.14-dimethyl - coeroxonol (obtained from crude meta - cresol); (6) 3.4.13.14 - tetramethylcoeroxonol; (7) 3.13 - dimethyl - 2.16 - dichlor-coeroxonol or a mixture of dimethyl-dichlor-coeroxonols (obtained by chlorinating crude cresol, condensing with phthalic anhydride and ring closure by means of oleum); (9) 4.14 (or 3.13-) dichlor-coeroxonol. In examples 1 and 9, aluminium powder may be substituted for zinc; in examples 2 and 8, 4.14-dimethylcoeroxonol is reduced electrolytically. 14.20 - Dimethyl - coer - bioxenediol - (9.10) is obtained by condensing 1 : 5-di-p-methylphenoxyanthraquinone with sulphuric and phosphoric acids, and treating the product with water and alkali. 4.14-Di-tert.-butyl-coeroxonol is obtained by condensing phthalic anhydride with 1-hydroxy-4-tert.-butylbenzene in presence of sulphuric acid and treating the resulting 3.6-di-tert.-butyl-fluorane with oleum. 4.14- and 3.13-dichlor-coeroxonol are obtained from 2.7- and 3.6-dichlor-fluorane respectively by ring closure with oleum.
GB3360934A 1934-11-22 1934-11-22 Improvements in the manufacture and production of compounds of the coeroxene and coerbioxene series Expired GB448180A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3360934A GB448180A (en) 1934-11-22 1934-11-22 Improvements in the manufacture and production of compounds of the coeroxene and coerbioxene series

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3360934A GB448180A (en) 1934-11-22 1934-11-22 Improvements in the manufacture and production of compounds of the coeroxene and coerbioxene series

Publications (1)

Publication Number Publication Date
GB448180A true GB448180A (en) 1936-05-22

Family

ID=10355139

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3360934A Expired GB448180A (en) 1934-11-22 1934-11-22 Improvements in the manufacture and production of compounds of the coeroxene and coerbioxene series

Country Status (1)

Country Link
GB (1) GB448180A (en)

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