GB886625A - Process for the manufacture of hexachlorocyclopentene-(2)-one-(1) - Google Patents

Process for the manufacture of hexachlorocyclopentene-(2)-one-(1)

Info

Publication number
GB886625A
GB886625A GB27102/58A GB2710258A GB886625A GB 886625 A GB886625 A GB 886625A GB 27102/58 A GB27102/58 A GB 27102/58A GB 2710258 A GB2710258 A GB 2710258A GB 886625 A GB886625 A GB 886625A
Authority
GB
United Kingdom
Prior art keywords
hexachloro
cyclopentene
catalyst
heating
hexachlorocyclopentene
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
GB27102/58A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst 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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB886625A publication Critical patent/GB886625A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
    • C07C49/587—Unsaturated compounds containing a keto groups being part of a ring
    • C07C49/687—Unsaturated compounds containing a keto groups being part of a ring containing halogen
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton

Landscapes

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

Abstract

Hexachloro-cyclopentene-3-one-1 or mixtures thereof with hexachloro-cyclopentene-2-one-1 is converted into hexachloro-cyclopenetene-2-one-1 by heating in the presence of an anhydrous aluminium or ferric halide or metallic ion as catalyst at a temperature of from 80 DEG C.-250 DEG C. The rearrangement is preferably carried out by heating at about 120 DEG C. using 0.5%-5% by weight of a catalyst such as ferric chloride. Examples are given. The ketone may be hydrolysed with sodium hydroxide to give perchlorobutadiene carboxylic acid. Hexachloro-cyclopentene-3-one-1 is obtained together with some of the D 2 compound by treating hexachloro-cyclopentadiene with oxygen in the presence of U.V. light.
GB27102/58A 1957-08-22 1958-08-22 Process for the manufacture of hexachlorocyclopentene-(2)-one-(1) Expired GB886625A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE886625X 1957-08-22

Publications (1)

Publication Number Publication Date
GB886625A true GB886625A (en) 1962-01-10

Family

ID=6833417

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27102/58A Expired GB886625A (en) 1957-08-22 1958-08-22 Process for the manufacture of hexachlorocyclopentene-(2)-one-(1)

Country Status (1)

Country Link
GB (1) GB886625A (en)

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