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
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)
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)
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/en unknown
- 1972-01-19 NL NL7200726A patent/NL7200726A/xx not_active Application Discontinuation
- 1972-01-21 CH CH94772A patent/CH546758A/en not_active IP Right Cessation
- 1972-01-21 JP JP770272A patent/JPS5641633B1/ja active Pending
- 1972-01-21 SE SE69572A patent/SE384861B/en unknown
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 |