NO853769L - Fremgangsm¨te for regenerering av 6-fluor-4-kromanon fra 6 -fluor-4-ureidokroman-4-karboksylsyre. - Google Patents

Fremgangsm¨te for regenerering av 6-fluor-4-kromanon fra 6 -fluor-4-ureidokroman-4-karboksylsyre.

Info

Publication number
NO853769L
NO853769L NO853769A NO853769A NO853769L NO 853769 L NO853769 L NO 853769L NO 853769 A NO853769 A NO 853769A NO 853769 A NO853769 A NO 853769A NO 853769 L NO853769 L NO 853769L
Authority
NO
Norway
Prior art keywords
fluoro
acid
carboxylic acid
ureidochroman
permanganate
Prior art date
Application number
NO853769A
Other languages
English (en)
Norwegian (no)
Inventor
Bernard Shields Moore
Original Assignee
Pfizer
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 Pfizer filed Critical Pfizer
Publication of NO853769L publication Critical patent/NO853769L/no

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
    • C07D311/54—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
    • 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
    • C07D311/22—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)
  • Control And Safety Of Cranes (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Fats And Perfumes (AREA)
NO853769A 1984-09-26 1985-09-25 Fremgangsm¨te for regenerering av 6-fluor-4-kromanon fra 6 -fluor-4-ureidokroman-4-karboksylsyre. NO853769L (no)

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
NO853769L true NO853769L (no) 1986-04-01

Family

ID=76224744

Family Applications (1)

Application Number Title Priority Date Filing Date
NO853769A NO853769L (no) 1984-09-26 1985-09-25 Fremgangsm¨te for regenerering av 6-fluor-4-kromanon fra 6 -fluor-4-ureidokroman-4-karboksylsyre.

Country Status (23)

Country Link
US (1) US4551542A (de)
EP (1) EP0179570B1 (de)
JP (1) JPS6185376A (de)
KR (1) KR870000584B1 (de)
CN (1) CN1004000B (de)
AT (1) ATE36158T1 (de)
AU (1) AU554303B2 (de)
CA (1) CA1215378A (de)
DD (1) DD239594A5 (de)
DE (1) DE3564111D1 (de)
DK (1) DK433685A (de)
ES (1) ES8604848A1 (de)
FI (1) FI853684A7 (de)
GR (1) GR852286B (de)
HU (1) HU196387B (de)
IL (1) IL76488A (de)
NO (1) NO853769L (de)
PH (1) PH20691A (de)
PL (1) PL147214B1 (de)
PT (1) PT81184B (de)
SU (1) SU1340586A3 (de)
YU (1) YU43885B (de)
ZA (1) ZA857379B (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
US4286098A (en) * 1980-03-28 1981-08-25 Pfizer Inc. Process for the preparation of chiral hydantoins
US4348526A (en) * 1980-03-28 1982-09-07 Pfizer Inc. Intermediates in the preparation of chiral hydantoins
EP0065392B1 (de) * 1981-05-13 1985-02-13 Imperial Chemical Industries Plc Pharmazeutische Zubereitungen, die Spirosuccinimidderivate enthalten
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

Also Published As

Publication number Publication date
FI853684L (fi) 1986-03-27
US4551542A (en) 1985-11-05
KR860002509A (ko) 1986-04-26
EP0179570B1 (de) 1988-08-03
GR852286B (de) 1986-01-21
DK433685A (da) 1986-03-27
FI853684A7 (fi) 1986-03-27
PL255500A1 (en) 1986-07-15
HU196387B (en) 1988-11-28
AU554303B2 (en) 1986-08-14
EP0179570A1 (de) 1986-04-30
ES8604848A1 (es) 1986-02-16
YU153185A (en) 1987-12-31
KR870000584B1 (ko) 1987-03-23
JPS6185376A (ja) 1986-04-30
ZA857379B (en) 1987-05-27
IL76488A0 (en) 1986-01-31
ATE36158T1 (de) 1988-08-15
JPH0225908B2 (de) 1990-06-06
PT81184A (en) 1985-10-01
DE3564111D1 (en) 1988-09-08
PT81184B (en) 1987-07-31
DD239594A5 (de) 1986-10-01
YU43885B (en) 1989-12-31
FI853684A0 (fi) 1985-09-25
PL147214B1 (en) 1989-05-31
CA1215378A (en) 1986-12-16
CN1004000B (zh) 1989-04-26
IL76488A (en) 1989-07-31
PH20691A (en) 1987-03-24
SU1340586A3 (ru) 1987-09-23
HUT38624A (en) 1986-06-30
AU4788485A (en) 1986-04-10
ES547256A0 (es) 1986-02-16
CN85106603A (zh) 1987-03-18
DK433685D0 (da) 1985-09-25

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