GB233734A - 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
GB233734A
GB233734A GB12255/25A GB1225525A GB233734A GB 233734 A GB233734 A GB 233734A GB 12255/25 A GB12255/25 A GB 12255/25A GB 1225525 A GB1225525 A GB 1225525A GB 233734 A GB233734 A GB 233734A
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
GB12255/25A
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 GB233734A publication Critical patent/GB233734A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/148—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound
    • C07C7/14833—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound with metals or their inorganic compounds
    • C07C7/1485—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound with metals or their inorganic compounds oxides; hydroxides; salts
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2603/00—Systems containing at least three condensed rings
    • C07C2603/02—Ortho- or ortho- and peri-condensed systems
    • C07C2603/04—Ortho- or ortho- and peri-condensed systems containing three rings
    • C07C2603/22—Ortho- or ortho- and peri-condensed systems containing three rings containing only six-membered rings
    • C07C2603/24—Anthracenes; Hydrogenated anthracenes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Water Supply & Treatment (AREA)
  • Indole Compounds (AREA)

Abstract

Crude anthracene is freed from carbazole by heating with caustic alkali in presence of an indifferent solvent, such as a paraffin, having a boiling point of 260-320 DEG C., the reaction being carried out without distilling off the water formed. The alkali carbazole is separated and converted into carbazole in known manner, and the anthracene is crystallized from the solution and washed with benzene. The reaction is preferably carried out at a temperature just below the boiling point of the solvent.
GB12255/25A 1924-05-12 1925-05-11 Improvements in and relating to processes for obtaining high percentage anthracene and carbazole from crude anthracene Expired GB233734A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS233734X 1924-05-12

Publications (1)

Publication Number Publication Date
GB233734A true GB233734A (en) 1926-07-29

Family

ID=5451305

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12255/25A Expired GB233734A (en) 1924-05-12 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) GB233734A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10254953B2 (en) 2013-01-21 2019-04-09 Keypoint Technologies India Pvt. Ltd. Text input method using continuous trace across two or more clusters of candidate words to select two or more words to form a sequence, wherein the candidate words are arranged based on selection probabilities
US10474355B2 (en) 2013-01-21 2019-11-12 Keypoint Technologies India Pvt. Ltd. Input pattern detection over virtual keyboard for candidate word identification

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10254953B2 (en) 2013-01-21 2019-04-09 Keypoint Technologies India Pvt. Ltd. Text input method using continuous trace across two or more clusters of candidate words to select two or more words to form a sequence, wherein the candidate words are arranged based on selection probabilities
US10474355B2 (en) 2013-01-21 2019-11-12 Keypoint Technologies India Pvt. Ltd. Input pattern detection over virtual keyboard for candidate word identification

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