GB314652A - Improvements in the manufacture and production of nitrogenous dyestuffs - Google Patents

Improvements in the manufacture and production of nitrogenous dyestuffs

Info

Publication number
GB314652A
GB314652A GB1595128A GB1595128A GB314652A GB 314652 A GB314652 A GB 314652A GB 1595128 A GB1595128 A GB 1595128A GB 1595128 A GB1595128 A GB 1595128A GB 314652 A GB314652 A GB 314652A
Authority
GB
United Kingdom
Prior art keywords
halogen
nitrogenous
pyranthrone
nitrogen
dyestuffs
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
GB1595128A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB1595128A priority Critical patent/GB314652A/en
Publication of GB314652A publication Critical patent/GB314652A/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
    • C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
    • C09B3/40—Pyranthrones
    • C09B3/44—Preparation from starting materials already containing the pyranthrone nucleus
    • C09B3/48—Amino derivatives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Indole Compounds (AREA)

Abstract

314,652. I. G. Farbenindustrie Akt.- Ges. May 31, 1928. Addition to 285,502. Pyranthrone derivatives.-The process of the parent Specification is modified by heating polyhalogenpyranthrones with nitrogen-containing carbocyclic compounds in which at least one reactive hydrogen atom is connected to the nitrogen atom, in the presence of copper in the metallic or combined form as catalyst in comparatively large amounts, i.e. about 5 per cent or more, calculated as metal, of the theoretically possible yield of reaction product, whereby several or all of the halogen atoms are substituted by nitrogenous carbocyclic residues. In examples, tri- and tetrabromopyranthrone are boiled with alpha-aminoanthraquinone, sodium acetate and copper oxide in nitrobenzene. The use of penta-, hexa-, and heptahalogenpyranthrones and of aminoanthrones and aminopyranthrones is mentioned. Halogen pyranathrones are obtained by treating pyranthrone in chlorsulphonic acid with halogen.
GB1595128A 1928-05-31 1928-05-31 Improvements in the manufacture and production of nitrogenous dyestuffs Expired GB314652A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1595128A GB314652A (en) 1928-05-31 1928-05-31 Improvements in the manufacture and production of nitrogenous dyestuffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1595128A GB314652A (en) 1928-05-31 1928-05-31 Improvements in the manufacture and production of nitrogenous dyestuffs

Publications (1)

Publication Number Publication Date
GB314652A true GB314652A (en) 1929-07-04

Family

ID=10068490

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1595128A Expired GB314652A (en) 1928-05-31 1928-05-31 Improvements in the manufacture and production of nitrogenous dyestuffs

Country Status (1)

Country Link
GB (1) GB314652A (en)

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