GB981523A - Grisan derivatives - Google Patents

Grisan derivatives

Info

Publication number
GB981523A
GB981523A GB3624660A GB3624660A GB981523A GB 981523 A GB981523 A GB 981523A GB 3624660 A GB3624660 A GB 3624660A GB 3624660 A GB3624660 A GB 3624660A GB 981523 A GB981523 A GB 981523A
Authority
GB
United Kingdom
Prior art keywords
group
halogenating agent
grisan
derivatives
metal halide
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
GB3624660A
Inventor
Thomas Walker
Godfrey Basil Webb
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.)
Glaxo Group Ltd
Original Assignee
Glaxo Group Ltd
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 Glaxo Group Ltd filed Critical Glaxo Group Ltd
Priority to GB3624660A priority Critical patent/GB981523A/en
Priority to BE609380A priority patent/BE609380A/en
Priority to CH1211761A priority patent/CH411927A/en
Priority to DE19611443273 priority patent/DE1443273A1/en
Publication of GB981523A publication Critical patent/GB981523A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/94—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom spiro-condensed with carbocyclic rings or ring systems, e.g. griseofulvins

Landscapes

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

Abstract

Enol halides corresponding to the skeletal formula <FORM:0981523/C2/1> in which R and R2, which may be the same or different, represent halogen atoms, are prepared by reacting a compound corresponding to the skeletal formula <FORM:0981523/C2/2> in which R1 represents an ether or thioether group and R2 represents a halogen atom, in the presence of an alkali metal or alkaline earth metal halide with a halogenating agent serving to convert a carboxyl group into an acid halide group. The halogenating agent may be phosphorus oxychloride and the metal halide may be lithium or magnesium chloride. Specifications 981,521 and 981,522 are referred to.
GB3624660A 1960-10-21 1960-10-21 Grisan derivatives Expired GB981523A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB3624660A GB981523A (en) 1960-10-21 1960-10-21 Grisan derivatives
BE609380A BE609380A (en) 1960-10-21 1961-10-19 Process for the preparation of enol halides of grisanic acids
CH1211761A CH411927A (en) 1960-10-21 1961-10-19 Process for the preparation of enol halides
DE19611443273 DE1443273A1 (en) 1960-10-21 1961-10-20 Process for the preparation of enol halides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3624660A GB981523A (en) 1960-10-21 1960-10-21 Grisan derivatives

Publications (1)

Publication Number Publication Date
GB981523A true GB981523A (en) 1965-01-27

Family

ID=10386334

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3624660A Expired GB981523A (en) 1960-10-21 1960-10-21 Grisan derivatives

Country Status (4)

Country Link
BE (1) BE609380A (en)
CH (1) CH411927A (en)
DE (1) DE1443273A1 (en)
GB (1) GB981523A (en)

Also Published As

Publication number Publication date
CH411927A (en) 1966-04-30
BE609380A (en) 1962-02-15
DE1443273A1 (en) 1969-11-20

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