CA1018986A - Process of preparation of benzopyrans - Google Patents

Process of preparation of benzopyrans

Info

Publication number
CA1018986A
CA1018986A CA180,207A CA180207A CA1018986A CA 1018986 A CA1018986 A CA 1018986A CA 180207 A CA180207 A CA 180207A CA 1018986 A CA1018986 A CA 1018986A
Authority
CA
Canada
Prior art keywords
benzopyrans
preparation
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
CA180,207A
Other languages
French (fr)
Other versions
CA180207S (en
Inventor
Hugh Cairns
David N. Hardern
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.)
Fisons Ltd
Original Assignee
Fisons 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 Fisons Ltd filed Critical Fisons Ltd
Application granted granted Critical
Publication of CA1018986A publication Critical patent/CA1018986A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
    • C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
    • C07D311/22—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 4
    • C07D311/24—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 4 with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pyrane Compounds (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
CA180,207A 1972-09-05 1973-09-04 Process of preparation of benzopyrans Expired CA1018986A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4107172 1972-09-05
GB191973A GB1439584A (en) 1972-09-05 1973-01-13 Preparation of benzopyran derivatives

Publications (1)

Publication Number Publication Date
CA1018986A true CA1018986A (en) 1977-10-11

Family

ID=26237070

Family Applications (1)

Application Number Title Priority Date Filing Date
CA180,207A Expired CA1018986A (en) 1972-09-05 1973-09-04 Process of preparation of benzopyrans

Country Status (5)

Country Link
JP (1) JPS5753355B2 (en)
CA (1) CA1018986A (en)
CH (1) CH582687A5 (en)
GB (1) GB1439584A (en)
SE (1) SE400079B (en)

Also Published As

Publication number Publication date
CH582687A5 (en) 1976-12-15
JPS5753355B2 (en) 1982-11-12
SE400079B (en) 1978-03-13
JPS4992071A (en) 1974-09-03
GB1439584A (en) 1976-06-16

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