ZA773566B - Preparation of gamma-pyrones - Google Patents

Preparation of gamma-pyrones

Info

Publication number
ZA773566B
ZA773566B ZA00773566A ZA773566A ZA773566B ZA 773566 B ZA773566 B ZA 773566B ZA 00773566 A ZA00773566 A ZA 00773566A ZA 773566 A ZA773566 A ZA 773566A ZA 773566 B ZA773566 B ZA 773566B
Authority
ZA
South Africa
Prior art keywords
pyrones
gamma
preparation
Prior art date
Application number
ZA00773566A
Other languages
English (en)
Inventor
D Kuhla
T Brennan
D Brannegan
P Weeks
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 ZA773566B publication Critical patent/ZA773566B/xx

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
    • C07D309/34—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
    • C07D309/36—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with oxygen atoms directly attached to ring carbon atoms
    • C07D309/40—Oxygen atoms attached in positions 3 and 4, e.g. maltol
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
    • C07D309/32—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pyrane Compounds (AREA)
  • Plural Heterocyclic Compounds (AREA)
ZA00773566A 1976-08-02 1977-06-14 Preparation of gamma-pyrones ZA773566B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71090176A 1976-08-02 1976-08-02

Publications (1)

Publication Number Publication Date
ZA773566B true ZA773566B (en) 1978-05-30

Family

ID=24856004

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00773566A ZA773566B (en) 1976-08-02 1977-06-14 Preparation of gamma-pyrones

Country Status (5)

Country Link
US (1) US4082717A (xx)
JP (1) JPS6046113B2 (xx)
RO (1) RO78954A (xx)
SU (1) SU991947A3 (xx)
ZA (1) ZA773566B (xx)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4191693A (en) * 1976-11-12 1980-03-04 Pfizer, Inc. Preparation of gamma-pyrones from 3-substituted furans
JPS5481273A (en) * 1977-12-12 1979-06-28 Shin Etsu Chem Co Ltd Preparation of pyranone halide
GB2086372B (en) * 1980-01-11 1983-12-07 Ici Ltd 1,4-dialkylbut-2-ene-1,4-diones
BR8307679A (pt) * 1983-01-17 1984-12-11 Otsuka Kagaku Yakuhin Derivados de pirano
US4742078A (en) * 1983-01-17 1988-05-03 Otsuka Kagaku Kabushiki Kaisha Pyran derivatives
DE3401362C3 (de) * 1983-02-04 1998-03-26 Fev Motorentech Gmbh Verfahren zur Steuerung von Viertakt-Kolbenbrennkraftmaschinen
US4443621A (en) * 1983-03-14 1984-04-17 Pfizer Inc. p-Nitrophenyl 3-bromo-2,2-diethoxy-propionate and synthetic utility therefor
JPS62178723A (ja) * 1986-02-01 1987-08-05 Mazda Motor Corp エンジンの吸気装置
JPH0235477Y2 (xx) * 1986-12-01 1990-09-26
JPH0291625U (xx) * 1989-01-09 1990-07-20
DE4322480C2 (de) * 1993-07-06 1996-05-02 Meta Motoren Energietech Vorrichtung zur variablen Ventilsteuerung von Brennkraftmaschinen
JP3007417B2 (ja) * 1994-04-29 2000-02-07 ファイザー インク． マルトール回収
US5939565A (en) * 1997-11-03 1999-08-17 Cultor Food Science, Inc. Recovery of γ-pyrones

Also Published As

Publication number Publication date
JPS5810573A (ja) 1983-01-21
JPS6046113B2 (ja) 1985-10-14
RO78954A (ro) 1982-04-12
SU991947A3 (ru) 1983-01-23
US4082717A (en) 1978-04-04

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