NL81830C - - Google Patents
Info
- Publication number
- NL81830C NL81830C NL177540A NL177540A NL81830C NL 81830 C NL81830 C NL 81830C NL 177540 A NL177540 A NL 177540A NL 177540 A NL177540 A NL 177540A NL 81830 C NL81830 C NL 81830C
- Authority
- NL
- Netherlands
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
- C07D311/42—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms in positions 2 and 4
- C07D311/44—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms in positions 2 and 4 with one hydrogen atom in position 3
- C07D311/46—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms in positions 2 and 4 with one hydrogen atom in position 3 unsubstituted in the carbocyclic ring
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pyrane Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH303086T | 1952-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL81830C true NL81830C (de) | 1956-06-15 |
Family
ID=4491589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL177540A NL81830C (de) | 1952-04-15 | 1953-04-13 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US2701804A (de) |
| AT (2) | AT182393B (de) |
| CH (1) | CH303086A (de) |
| DE (1) | DE924450C (de) |
| DK (1) | DK81853C (de) |
| FR (1) | FR1078675A (de) |
| GB (1) | GB728943A (de) |
| NL (1) | NL81830C (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1047788B (de) * | 1956-01-20 | 1958-12-31 | Geigy Ag J R | Verfahren zur Herstellung von Derivaten des 4-Oxycumarins |
| DE1017620B (de) * | 1956-07-20 | 1957-10-17 | Bayer Ag | Verfahren zur Herstellung von Derivaten des 4-Oxycumarins |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB578589A (en) * | 1942-08-29 | 1946-07-04 | Wisconsin Alumni Res Found | Improvements in or relating to synthesis of 4-hydroxycoumarins |
-
1952
- 1952-04-15 CH CH303086D patent/CH303086A/de unknown
-
1953
- 1953-03-20 DK DK96853AA patent/DK81853C/da active
- 1953-03-22 DE DEH15808A patent/DE924450C/de not_active Expired
- 1953-03-23 AT AT182393D patent/AT182393B/de active
- 1953-04-09 US US347838A patent/US2701804A/en not_active Expired - Lifetime
- 1953-04-09 FR FR1078675D patent/FR1078675A/fr not_active Expired
- 1953-04-13 NL NL177540A patent/NL81830C/xx active
- 1953-04-15 GB GB10250/53A patent/GB728943A/en not_active Expired
- 1953-08-11 AT AT187520D patent/AT187520B/de active
Also Published As
| Publication number | Publication date |
|---|---|
| DE924450C (de) | 1955-03-03 |
| FR1078675A (fr) | 1954-11-22 |
| AT182393B (de) | 1955-06-25 |
| US2701804A (en) | 1955-02-08 |
| CH303086A (de) | 1954-11-15 |
| GB728943A (en) | 1955-04-27 |
| AT187520B (de) | 1956-10-25 |
| DK81853C (da) | 1956-09-24 |