GB576494A - Process for the manufacture of bicyclic sulphur compounds - Google Patents

Process for the manufacture of bicyclic sulphur compounds

Info

Publication number
GB576494A
GB576494A GB2862045A GB2862045A GB576494A GB 576494 A GB576494 A GB 576494A GB 2862045 A GB2862045 A GB 2862045A GB 2862045 A GB2862045 A GB 2862045A GB 576494 A GB576494 A GB 576494A
Authority
GB
United Kingdom
Prior art keywords
manufacture
sulphur compounds
bicyclic
bicyclic sulphur
acid
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
GB2862045A
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.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche 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 F Hoffmann La Roche AG filed Critical F Hoffmann La Roche AG
Priority to GB2862045A priority Critical patent/GB576494A/en
Publication of GB576494A publication Critical patent/GB576494A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D495/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms
    • C07D495/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
    • C07D495/04—Ortho-condensed systems

Landscapes

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

Abstract

In the process of example 2 of Specification 576,489, a free keto-acid of the formula <FORM:0576494/IV/1> or <FORM:0576494/IV/2> is isolated as a second fraction. Phosphorus oxychloride may be used as an alternative to sulphuric acid as condensing agent.
GB2862045A 1944-05-01 1944-05-01 Process for the manufacture of bicyclic sulphur compounds Expired GB576494A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2862045A GB576494A (en) 1944-05-01 1944-05-01 Process for the manufacture of bicyclic sulphur compounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2862045A GB576494A (en) 1944-05-01 1944-05-01 Process for the manufacture of bicyclic sulphur compounds

Publications (1)

Publication Number Publication Date
GB576494A true GB576494A (en) 1946-04-05

Family

ID=10278474

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2862045A Expired GB576494A (en) 1944-05-01 1944-05-01 Process for the manufacture of bicyclic sulphur compounds

Country Status (1)

Country Link
GB (1) GB576494A (en)

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