ZA857379B - Regeneration of 6-fluoro-4-chromanone from 6-fluoro-4-ureidochroman-4-carboxylic acid - Google Patents
Regeneration of 6-fluoro-4-chromanone from 6-fluoro-4-ureidochroman-4-carboxylic acidInfo
- Publication number
- ZA857379B ZA857379B ZA857379A ZA857379A ZA857379B ZA 857379 B ZA857379 B ZA 857379B ZA 857379 A ZA857379 A ZA 857379A ZA 857379 A ZA857379 A ZA 857379A ZA 857379 B ZA857379 B ZA 857379B
- Authority
- ZA
- South Africa
- Prior art keywords
- fluoro
- ureidochroman
- chromanone
- carboxylic acid
- regeneration
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D491/00—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
- C07D491/02—Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains two hetero rings
- C07D491/10—Spiro-condensed systems
-
- 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
- C07D311/54—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 substituted in the carbocyclic ring
-
- 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
-
- 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
- C07D311/58—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4
- C07D311/68—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring other than with oxygen or sulphur atoms in position 2 or 4 with nitrogen atoms directly attached in position 4
Landscapes
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pyrane Compounds (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Jellies, Jams, And Syrups (AREA)
- Control And Safety Of Cranes (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Fats And Perfumes (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/655,006 US4551542A (en) | 1984-09-26 | 1984-09-26 | Regeneration of 6-fluoro-4-chromanone from 6-fluoro-4-ureidochroman-4-carboxylic acid |
| CN85106603.8A CN1004000B (zh) | 1984-09-26 | 1985-08-31 | 由6-氟代-4-脲基苯并二氢吡喃-4-羧酸再生为6-氟代苯并二氢吡喃-4-酮的方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ZA857379B true ZA857379B (en) | 1987-05-27 |
Family
ID=76224744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ZA857379A ZA857379B (en) | 1984-09-26 | 1985-09-25 | Regeneration of 6-fluoro-4-chromanone from 6-fluoro-4-ureidochroman-4-carboxylic acid |
Country Status (23)
| Country | Link |
|---|---|
| US (1) | US4551542A (xx) |
| EP (1) | EP0179570B1 (xx) |
| JP (1) | JPS6185376A (xx) |
| KR (1) | KR870000584B1 (xx) |
| CN (1) | CN1004000B (xx) |
| AT (1) | ATE36158T1 (xx) |
| AU (1) | AU554303B2 (xx) |
| CA (1) | CA1215378A (xx) |
| DD (1) | DD239594A5 (xx) |
| DE (1) | DE3564111D1 (xx) |
| DK (1) | DK433685A (xx) |
| ES (1) | ES8604848A1 (xx) |
| FI (1) | FI853684L (xx) |
| GR (1) | GR852286B (xx) |
| HU (1) | HU196387B (xx) |
| IL (1) | IL76488A (xx) |
| NO (1) | NO853769L (xx) |
| PH (1) | PH20691A (xx) |
| PL (1) | PL147214B1 (xx) |
| PT (1) | PT81184B (xx) |
| SU (1) | SU1340586A3 (xx) |
| YU (1) | YU43885B (xx) |
| ZA (1) | ZA857379B (xx) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11498018B2 (en) * | 2017-11-27 | 2022-11-15 | Vasilios (Bill) Panagiotakopoulos | Extraction and purification of cannabinoid compounds |
| CN112939793B (zh) * | 2021-02-03 | 2022-07-08 | 浙江普洛康裕制药有限公司 | 麻黄碱和伪麻黄碱工业生产过程中母液中活性成分的回收利用方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4117230A (en) * | 1976-10-18 | 1978-09-26 | Pfizer Inc. | Hydantoin derivatives as therapeutic agents |
| US4147795A (en) * | 1977-02-11 | 1979-04-03 | Pfizer Inc. | Hydantoin derivatives as therapeutic agents |
| US4130714A (en) * | 1977-05-23 | 1978-12-19 | Pfizer Inc. | Hydantoin therapeutic agents |
| US4210663A (en) * | 1978-11-08 | 1980-07-01 | Pfizer Inc. | Halogen substituted benzopyran- and benzothiopyran-4-carboxylic acids |
| US4348526A (en) * | 1980-03-28 | 1982-09-07 | Pfizer Inc. | Intermediates in the preparation of chiral hydantoins |
| US4286098A (en) * | 1980-03-28 | 1981-08-25 | Pfizer Inc. | Process for the preparation of chiral hydantoins |
| EP0065392B1 (en) * | 1981-05-13 | 1985-02-13 | Imperial Chemical Industries Plc | Pharmaceutical compositions containing spiro succinimide derivatives |
| US4431828A (en) * | 1982-11-10 | 1984-02-14 | Pfizer Inc. | Regeneration of 6-fluoro-4-chromanone from by-products in the synthesis of sorbinil |
| US4435578A (en) * | 1982-11-10 | 1984-03-06 | Pfizer Inc. | Sorbinil by optical resolution of precursor 6-fluoro-4-ureidochroman-4-carboxylic acid |
-
1984
- 1984-09-26 US US06/655,006 patent/US4551542A/en not_active Expired - Lifetime
-
1985
- 1985-06-27 CA CA000485501A patent/CA1215378A/en not_active Expired
- 1985-08-31 CN CN85106603.8A patent/CN1004000B/zh not_active Expired
- 1985-09-19 GR GR852286A patent/GR852286B/el unknown
- 1985-09-23 AT AT85306741T patent/ATE36158T1/de not_active IP Right Cessation
- 1985-09-23 DE DE8585306741T patent/DE3564111D1/de not_active Expired
- 1985-09-23 EP EP85306741A patent/EP0179570B1/en not_active Expired
- 1985-09-24 DD DD85280951A patent/DD239594A5/de not_active IP Right Cessation
- 1985-09-24 PT PT81184A patent/PT81184B/pt unknown
- 1985-09-24 ES ES547256A patent/ES8604848A1/es not_active Expired
- 1985-09-24 PL PL1985255500A patent/PL147214B1/pl unknown
- 1985-09-24 IL IL76488A patent/IL76488A/xx unknown
- 1985-09-25 KR KR1019850007042A patent/KR870000584B1/ko not_active IP Right Cessation
- 1985-09-25 PH PH32850A patent/PH20691A/en unknown
- 1985-09-25 DK DK433685A patent/DK433685A/da not_active Application Discontinuation
- 1985-09-25 YU YU1531/85A patent/YU43885B/xx unknown
- 1985-09-25 FI FI853684A patent/FI853684L/fi not_active IP Right Cessation
- 1985-09-25 AU AU47884/85A patent/AU554303B2/en not_active Ceased
- 1985-09-25 SU SU853952444A patent/SU1340586A3/ru active
- 1985-09-25 ZA ZA857379A patent/ZA857379B/xx unknown
- 1985-09-25 NO NO853769A patent/NO853769L/no unknown
- 1985-09-25 HU HU853644A patent/HU196387B/hu not_active IP Right Cessation
- 1985-09-26 JP JP60213619A patent/JPS6185376A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| CA1215378A (en) | 1986-12-16 |
| JPS6185376A (ja) | 1986-04-30 |
| US4551542A (en) | 1985-11-05 |
| YU43885B (en) | 1989-12-31 |
| AU554303B2 (en) | 1986-08-14 |
| HU196387B (en) | 1988-11-28 |
| FI853684A0 (fi) | 1985-09-25 |
| JPH0225908B2 (xx) | 1990-06-06 |
| PT81184A (en) | 1985-10-01 |
| ES547256A0 (es) | 1986-02-16 |
| PL147214B1 (en) | 1989-05-31 |
| EP0179570B1 (en) | 1988-08-03 |
| AU4788485A (en) | 1986-04-10 |
| DD239594A5 (de) | 1986-10-01 |
| CN1004000B (zh) | 1989-04-26 |
| ES8604848A1 (es) | 1986-02-16 |
| IL76488A0 (en) | 1986-01-31 |
| SU1340586A3 (ru) | 1987-09-23 |
| NO853769L (no) | 1986-04-01 |
| KR870000584B1 (ko) | 1987-03-23 |
| FI853684L (fi) | 1986-03-27 |
| GR852286B (xx) | 1986-01-21 |
| PL255500A1 (en) | 1986-07-15 |
| PH20691A (en) | 1987-03-24 |
| CN85106603A (zh) | 1987-03-18 |
| HUT38624A (en) | 1986-06-30 |
| PT81184B (en) | 1987-07-31 |
| ATE36158T1 (de) | 1988-08-15 |
| KR860002509A (ko) | 1986-04-26 |
| DE3564111D1 (en) | 1988-09-08 |
| YU153185A (en) | 1987-12-31 |
| IL76488A (en) | 1989-07-31 |
| DK433685D0 (da) | 1985-09-25 |
| DK433685A (da) | 1986-03-27 |
| EP0179570A1 (en) | 1986-04-30 |
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