DK208877A - PROCEDURE FOR THE PREPARATION OF 4-OXO-4H-BENZO OR NAPHTHOPYRANE-2-CARBOXYLIC DERIVATIVES - Google Patents

PROCEDURE FOR THE PREPARATION OF 4-OXO-4H-BENZO OR NAPHTHOPYRANE-2-CARBOXYLIC DERIVATIVES

Info

Publication number
DK208877A
DK208877A DK208877A DK208877A DK208877A DK 208877 A DK208877 A DK 208877A DK 208877 A DK208877 A DK 208877A DK 208877 A DK208877 A DK 208877A DK 208877 A DK208877 A DK 208877A
Authority
DK
Denmark
Prior art keywords
naphthopyrane
benzo
oxo
procedure
preparation
Prior art date
Application number
DK208877A
Other languages
Danish (da)
Inventor
H Cairns
D N Hardern
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 DK208877A publication Critical patent/DK208877A/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)
  • Pyrane Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
DK208877A 1976-05-19 1977-05-12 PROCEDURE FOR THE PREPARATION OF 4-OXO-4H-BENZO OR NAPHTHOPYRANE-2-CARBOXYLIC DERIVATIVES DK208877A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2057176 1976-05-19

Publications (1)

Publication Number Publication Date
DK208877A true DK208877A (en) 1977-11-20

Family

ID=10148114

Family Applications (1)

Application Number Title Priority Date Filing Date
DK208877A DK208877A (en) 1976-05-19 1977-05-12 PROCEDURE FOR THE PREPARATION OF 4-OXO-4H-BENZO OR NAPHTHOPYRANE-2-CARBOXYLIC DERIVATIVES

Country Status (6)

Country Link
JP (1) JPS52142073A (en)
DK (1) DK208877A (en)
FI (1) FI771545A (en)
NO (1) NO771722L (en)
PT (1) PT66569B (en)
SE (1) SE7705849L (en)

Also Published As

Publication number Publication date
PT66569B (en) 1979-04-13
SE7705849L (en) 1977-11-20
PT66569A (en) 1977-06-01
FI771545A (en) 1977-11-20
JPS52142073A (en) 1977-11-26
NO771722L (en) 1977-11-22

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