DK131185B - Fremgangsmåde til fremstilling af bis-chromoner. - Google Patents

Fremgangsmåde til fremstilling af bis-chromoner.

Info

Publication number: DK131185B
Authority: DK; Denmark
Prior art keywords: chromones; bis; production
Prior art date: 1971-01-22

Application number

DK25072A

Other languages

Danish (da)

English (en)

Other versions

DK131185C (fr

Inventor

R Hazard

E N Wall

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.)

1971-01-22

Filing date

1972-01-18

Publication date

1975-06-09

1972-01-18 Application filed by Fisons Ltd filed Critical Fisons Ltd

1975-06-09 Publication of DK131185B publication Critical patent/DK131185B/da

1975-11-10 Application granted granted Critical

1975-11-10 Publication of DK131185C publication Critical patent/DK131185C/da

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)

DK25072A 1971-01-22 1972-01-18 Fremgangsmåde til fremstilling af bis-chromoner. DK131185B (da)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number	Publication Date
DK131185B true DK131185B (da)	1975-06-09
DK131185C DK131185C (fr)	1975-11-10

Family

ID=9748628

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DK25072A DK131185B (da)	1971-01-22	1972-01-18	Fremgangsmåde til fremstilling af bis-chromoner.

Country Status (7)

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

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

1971
- 1971-01-22 GB GB1324571D patent/GB1324571A/en not_active Expired
1972
- 1972-01-17 CA CA132,513A patent/CA964272A/en not_active Expired
- 1972-01-18 DK DK25072A patent/DK131185B/da unknown
- 1972-01-19 NL NL7200726A patent/NL7200726A/xx not_active Application Discontinuation
- 1972-01-21 JP JP770272A patent/JPS5641633B1/ja active Pending
- 1972-01-21 CH CH94772A patent/CH546758A/fr not_active IP Right Cessation
- 1972-01-21 SE SE69572A patent/SE384861B/xx unknown

Also Published As

Publication number	Publication date
CH546758A (fr)	1974-03-15
DK131185C (fr)	1975-11-10
JPS5641633B1 (fr)	1981-09-29
NL7200726A (fr)	1972-07-25
CA964272A (en)	1975-03-11
GB1324571A (en)	1973-07-25
SE384861B (sv)	1976-05-24

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