CH546758A - PROCESS FOR PREPARING BIS-CHROMONES. - Google Patents

PROCESS FOR PREPARING BIS-CHROMONES.

Info

Publication number
CH546758A
CH546758A CH94772A CH546758DA CH546758A CH 546758 A CH546758 A CH 546758A CH 94772 A CH94772 A CH 94772A CH 546758D A CH546758D A CH 546758DA CH 546758 A CH546758 A CH 546758A
Authority
CH
Switzerland
Prior art keywords
chromones
preparing bis
bis
preparing
Prior art date
Application number
CH94772A
Other languages
French (fr)
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
Publication of CH546758A publication Critical patent/CH546758A/en

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)
  • Epoxy Compounds (AREA)
  • Pyridine Compounds (AREA)
CH94772A 1971-01-22 1972-01-21 PROCESS FOR PREPARING BIS-CHROMONES. CH546758A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB292471 1971-01-22

Publications (1)

Publication Number Publication Date
CH546758A true CH546758A (en) 1974-03-15

Family

ID=9748628

Family Applications (1)

Application Number Title Priority Date Filing Date
CH94772A CH546758A (en) 1971-01-22 1972-01-21 PROCESS FOR PREPARING BIS-CHROMONES.

Country Status (7)

Country Link
JP (1) JPS5641633B1 (en)
CA (1) CA964272A (en)
CH (1) CH546758A (en)
DK (1) DK131185B (en)
GB (1) GB1324571A (en)
NL (1) NL7200726A (en)
SE (1) SE384861B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1448980A (en) * 1973-01-19 1976-09-08 Fisons Ltd Unsymmetrically substituted bis-chromones

Also Published As

Publication number Publication date
DK131185B (en) 1975-06-09
SE384861B (en) 1976-05-24
DK131185C (en) 1975-11-10
JPS5641633B1 (en) 1981-09-29
CA964272A (en) 1975-03-11
GB1324571A (en) 1973-07-25
NL7200726A (en) 1972-07-25

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Legal Events

Date Code Title Description
PL Patent ceased