GB236170A - Improvements in and relating to processes for obtaining high percentage anthracene and carbazole from crude anthracene - Google Patents

Improvements in and relating to processes for obtaining high percentage anthracene and carbazole from crude anthracene

Info

Publication number
GB236170A
GB236170A GB12281/25A GB1228125A GB236170A GB 236170 A GB236170 A GB 236170A GB 12281/25 A GB12281/25 A GB 12281/25A GB 1228125 A GB1228125 A GB 1228125A GB 236170 A GB236170 A GB 236170A
Authority
GB
United Kingdom
Prior art keywords
anthracene
carbazole
relating
processes
high percentage
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
GB12281/25A
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.)
Ver Chemische & Metallurgische
Original Assignee
Ver Chemische & Metallurgische
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 Ver Chemische & Metallurgische filed Critical Ver Chemische & Metallurgische
Publication of GB236170A publication Critical patent/GB236170A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/56—Ring systems containing three or more rings
    • C07D209/80—[b, c]- or [b, d]-condensed
    • C07D209/82—Carbazoles; Hydrogenated carbazoles
    • C07D209/84—Separation, e.g. from tar; Purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Indole Compounds (AREA)

Abstract

The process of the parent Specification, according to which crude anthracene is heated with caustic alkali, without distilling off the water formed, in presence of an indifferent solvent boiling at about 300 DEG C., is modified by adding to the reaction mixture lime or other alkaline-earth oxide, and when such addition is made a solvent having a boiling point of 220-260 DEG C. may be used. Purified anthracene and carbazole are separated from the reaction mixture as described in the parent Specification.
GB12281/25A 1924-06-28 1925-05-11 Improvements in and relating to processes for obtaining high percentage anthracene and carbazole from crude anthracene Expired GB236170A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS236170X 1924-06-28

Publications (1)

Publication Number Publication Date
GB236170A true GB236170A (en) 1926-07-29

Family

ID=5451357

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12281/25A Expired GB236170A (en) 1924-06-28 1925-05-11 Improvements in and relating to processes for obtaining high percentage anthracene and carbazole from crude anthracene

Country Status (1)

Country Link
GB (1) GB236170A (en)

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