NL182476B - PROCESS FOR THE PREPARATION OF A 4-HALOGEN-BETA-PYRON. - Google Patents

PROCESS FOR THE PREPARATION OF A 4-HALOGEN-BETA-PYRON.

Info

Publication number
NL182476B
NL182476B NLAANVRAGE8105537,A NL8105537A NL182476B NL 182476 B NL182476 B NL 182476B NL 8105537 A NL8105537 A NL 8105537A NL 182476 B NL182476 B NL 182476B
Authority
NL
Netherlands
Prior art keywords
pyron
beta
halogen
preparation
Prior art date
Application number
NLAANVRAGE8105537,A
Other languages
Dutch (nl)
Other versions
NL8105537A (en
NL182476C (en
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
Priority claimed from US05/721,885 external-priority patent/US4082717A/en
Application filed by Pfizer filed Critical Pfizer
Publication of NL8105537A publication Critical patent/NL8105537A/en
Publication of NL182476B publication Critical patent/NL182476B/en
Application granted granted Critical
Publication of NL182476C publication Critical patent/NL182476C/en

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
    • C07D309/32—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
    • 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

Landscapes

  • Organic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Pyrane Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pyridine Compounds (AREA)
  • Cosmetics (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Furan Compounds (AREA)
  • Saccharide Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Picture Signal Circuits (AREA)
  • Processing Of Color Television Signals (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Seasonings (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
NLAANVRAGE8105537,A 1976-08-02 1981-12-09 PROCESS FOR THE PREPARATION OF A 4-HALOGEN-BETA-PYRON. NL182476C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US71090176A 1976-08-02 1976-08-02
US71090176 1976-08-02
US05/721,885 US4082717A (en) 1976-08-02 1976-09-09 Preparation of gamma-pyrones
US72188576 1976-09-09
NLAANVRAGE7706811,A NL170955C (en) 1976-08-02 1977-06-21 PROCESS FOR PREPARING A 3-HYDROXY-4-PYRON DERIVATIVE.
NL7706811 1977-06-21

Publications (3)

Publication Number Publication Date
NL8105537A NL8105537A (en) 1982-04-01
NL182476B true NL182476B (en) 1987-10-16
NL182476C NL182476C (en) 1988-03-16

Family

ID=27108548

Family Applications (5)

Application Number Title Priority Date Filing Date
NLAANVRAGE7706811,A NL170955C (en) 1976-08-02 1977-06-21 PROCESS FOR PREPARING A 3-HYDROXY-4-PYRON DERIVATIVE.
NLAANVRAGE8105539,A NL182478C (en) 1976-08-02 1981-12-09 PROCESS FOR PREPARING A 3-HYDROXY-4H-PYRON-4.
NLAANVRAGE8105537,A NL182476C (en) 1976-08-02 1981-12-09 PROCESS FOR THE PREPARATION OF A 4-HALOGEN-BETA-PYRON.
NLAANVRAGE8105538,A NL182477C (en) 1976-08-02 1981-12-09 PROCESS FOR PREPARING A 4-HALOGENIC DIHYDROPYRAN.
NLAANVRAGE8105540,A NL182805C (en) 1976-08-02 1981-12-09 PROCESS FOR THE PREPARATION OF 3-HYDROXY GAMMA PYRONS.

Family Applications Before (2)

Application Number Title Priority Date Filing Date
NLAANVRAGE7706811,A NL170955C (en) 1976-08-02 1977-06-21 PROCESS FOR PREPARING A 3-HYDROXY-4-PYRON DERIVATIVE.
NLAANVRAGE8105539,A NL182478C (en) 1976-08-02 1981-12-09 PROCESS FOR PREPARING A 3-HYDROXY-4H-PYRON-4.

Family Applications After (2)

Application Number Title Priority Date Filing Date
NLAANVRAGE8105538,A NL182477C (en) 1976-08-02 1981-12-09 PROCESS FOR PREPARING A 4-HALOGENIC DIHYDROPYRAN.
NLAANVRAGE8105540,A NL182805C (en) 1976-08-02 1981-12-09 PROCESS FOR THE PREPARATION OF 3-HYDROXY GAMMA PYRONS.

Country Status (36)

Country Link
JP (7) JPS5318578A (en)
AR (1) AR216080A1 (en)
AT (3) AT362790B (en)
BE (1) BE855965A (en)
BG (4) BG28989A4 (en)
BR (1) BR7703970A (en)
CA (3) CA1095921A (en)
CH (4) CH625798A5 (en)
CS (3) CS203921B2 (en)
DD (1) DD132494A5 (en)
DE (3) DE2728499C2 (en)
DK (4) DK153483C (en)
EG (1) EG13080A (en)
ES (5) ES459994A1 (en)
FI (6) FI72722C (en)
FR (1) FR2372821A1 (en)
GB (5) GB1538375A (en)
GR (1) GR68938B (en)
HK (5) HK30481A (en)
HU (4) HU185687B (en)
IE (5) IE45643B1 (en)
IT (1) IT1106258B (en)
LU (1) LU77600A1 (en)
MX (1) MX4597E (en)
MY (3) MY8100267A (en)
NL (5) NL170955C (en)
NO (7) NO150561C (en)
NZ (1) NZ184342A (en)
PH (5) PH13557A (en)
PL (4) PL115586B1 (en)
PT (1) PT66694B (en)
RO (4) RO78951A2 (en)
SE (6) SE433079B (en)
SU (2) SU955859A3 (en)
TR (1) TR19652A (en)
YU (4) YU40166B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1095921A (en) * 1976-08-02 1981-02-17 Thomas M. Brennan Preparation of gamma-pyrones
JPS5444675A (en) * 1977-09-12 1979-04-09 Shin Etsu Chem Co Ltd Production of 3-hydroxy-4-pyrone analog
FR2402654A1 (en) * 1977-09-12 1979-04-06 Shinetsu Chemical Co Tetra:hydro-pyranone derivs. - useful as intermediates for cpds. used as food flavours
JPS5741226U (en) * 1980-08-20 1982-03-05
JPS59135008U (en) * 1983-02-28 1984-09-10 松下電工株式会社 Distribution board device
JPS6050245A (en) * 1983-08-29 1985-03-19 Nissan Motor Co Ltd Fuel injection device in internal-combustion engine
JPH0226945Y2 (en) * 1985-09-11 1990-07-20
JP2586607B2 (en) * 1987-10-30 1997-03-05 日産化学工業株式会社 Production method of optically active alcohol
WO2008116301A1 (en) 2007-03-28 2008-10-02 Apotex Technologies Inc. Fluorinated derivatives of deferiprone
WO2009129592A1 (en) 2008-04-25 2009-10-29 Apotex Technologies Inc. Liquid formulation for deferiprone with palatable taste
ME01911B (en) 2009-07-03 2014-12-20 Apotex Tech Inc Fluorinated derivatives of 3-hydroxypyridin-4-ones
WO2017168309A1 (en) * 2016-03-29 2017-10-05 Dr. Reddy’S Laboratories Limited Process for preparation of eribulin and intermediates thereof
CN108609456B (en) * 2016-12-13 2021-03-12 奥的斯电梯公司 Openable expansion panel and elevator suspended ceiling, elevator car and elevator system with same
CN111606879A (en) * 2020-05-25 2020-09-01 安徽金禾实业股份有限公司 Method for preparing 2-hydroxymethyl-3-alkoxy-4H-pyran-4-ketone by one-pot method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3491122A (en) * 1966-09-14 1970-01-20 Monsanto Co Synthesis of 4-pyrones
US3547912A (en) * 1968-07-29 1970-12-15 American Home Prod Derivatives of 2h-pyran-3(6h)-ones and preparation thereof
JPS5145565B1 (en) * 1968-10-12 1976-12-04
US3621063A (en) * 1968-12-24 1971-11-16 Monsanto Co Unsaturated acyclic ketones
US3832357A (en) * 1971-05-26 1974-08-27 Daicel Ltd Process for preparation of 3-hydroxy-2-alkyl-4-pyrone
JPS5212166A (en) * 1975-07-17 1977-01-29 Tatsuya Shono Process for preparation of 4-pyron derivatives
IE42789B1 (en) * 1975-08-28 1980-10-22 Pfizer Preparation of gamma-pyrones
CA1095921A (en) * 1976-08-02 1981-02-17 Thomas M. Brennan Preparation of gamma-pyrones

Also Published As

Publication number Publication date
FI72723C (en) 1987-07-10
NL8105538A (en) 1982-04-01
JPS5814433B2 (en) 1983-03-18
IE45644B1 (en) 1982-10-20
GB1538374A (en) 1979-01-17
HU185686B (en) 1985-03-28
FI831704L (en) 1983-05-16
ES470745A1 (en) 1979-01-16
PT66694B (en) 1978-11-17
SE8200522L (en) 1982-01-29
PL215007A1 (en) 1979-12-17
CH626357A5 (en) 1981-11-13
HK30381A (en) 1981-07-10
DE2728499C2 (en) 1986-04-03
NO150560B (en) 1984-07-30
NL182805C (en) 1988-05-16
FI72721C (en) 1987-07-10
CA1095921A (en) 1981-02-17
DK153484B (en) 1988-07-18
CH625798A5 (en) 1981-10-15
CH625235A5 (en) 1981-09-15
CA1110254A (en) 1981-10-06
DE2760221C2 (en) 1989-10-05
JPS5618597B2 (en) 1981-04-30
IE45643B1 (en) 1982-10-20
NL8105540A (en) 1982-04-01
IE790587L (en) 1978-02-02
NO150561C (en) 1984-11-07
PH13926A (en) 1980-11-04
JPS5436267A (en) 1979-03-16
SE8200520L (en) 1982-01-29
PH14625A (en) 1981-10-12
SU955859A3 (en) 1982-08-30
HK30681A (en) 1981-07-10
NO150043B (en) 1984-04-30
FI73424B (en) 1987-06-30
PL115496B1 (en) 1981-04-30
DK154079B (en) 1988-10-10
DE2760220C2 (en) 1987-08-20
DK153483B (en) 1988-07-18
JPS5436269A (en) 1979-03-16
IE790586L (en) 1978-02-02
AT363470B (en) 1981-08-10
FI831704A0 (en) 1983-05-16
MY8100267A (en) 1981-12-31
MY8100287A (en) 1981-12-31
SE445042B (en) 1986-05-26
NO821850L (en) 1978-02-03
BR7703970A (en) 1978-07-04
YU42613B (en) 1988-10-31
SE8200521L (en) 1982-01-29
HK30481A (en) 1981-07-10
FI771934A (en) 1978-02-03
IE45641B1 (en) 1982-10-20
ATA124380A (en) 1981-03-15
HU180040B (en) 1983-01-28
IE790584L (en) 1978-02-02
ES470743A1 (en) 1979-01-16
PL115497B1 (en) 1981-04-30
HU185687B (en) 1985-03-28
FI72720B (en) 1987-03-31
CS203921B2 (en) 1981-03-31
DK326186D0 (en) 1986-07-09
FI72722C (en) 1987-07-10
YU270382A (en) 1983-10-31
ATA124480A (en) 1981-01-15
NL182478C (en) 1988-03-16
NL8105537A (en) 1982-04-01
DK153401B (en) 1988-07-11
BG28989A4 (en) 1980-08-15
ES470744A1 (en) 1979-01-16
SE7707035L (en) 1978-02-03
JPS5436270A (en) 1979-03-16
SE433079B (en) 1984-05-07
PH13557A (en) 1980-06-26
SE452616B (en) 1987-12-07
PL115586B1 (en) 1981-04-30
RO74367A (en) 1981-11-24
SE8200518L (en) 1982-01-29
YU146977A (en) 1983-06-30
DK276177A (en) 1978-02-03
FI831702L (en) 1983-05-16
DK326186A (en) 1986-07-09
MX4597E (en) 1982-06-25
DK326086D0 (en) 1986-07-09
NO821848L (en) 1978-02-03
TR19652A (en) 1979-09-17
BG28849A3 (en) 1980-07-15
JPS5436266A (en) 1979-03-16
NL182477B (en) 1987-10-16
BG29136A3 (en) 1980-09-15
FR2372821B1 (en) 1980-10-17
SE8200519L (en) 1982-01-29
ES459994A1 (en) 1978-11-16
FI831703L (en) 1983-05-16
JPS5436271A (en) 1979-03-16
YU166383A (en) 1986-02-28
NO150042C (en) 1984-08-15
FI72721B (en) 1987-03-31
EG13080A (en) 1981-03-31
NL182805B (en) 1987-12-16
HU186026B (en) 1985-05-28
SU1015826A3 (en) 1983-04-30
NO150560C (en) 1984-11-07
GB1538373A (en) 1979-01-17
NL170955C (en) 1983-01-17
CS203923B2 (en) 1981-03-31
BG28988A4 (en) 1980-08-15
HK30781A (en) 1981-07-10
ES470746A1 (en) 1979-01-16
NO834236L (en) 1978-02-03
FI831702A0 (en) 1983-05-16
NO772193L (en) 1978-02-03
NO151365B (en) 1984-12-17
DK153484C (en) 1988-11-28
GB1538371A (en) 1979-01-17
ATA440477A (en) 1980-11-15
IT1106258B (en) 1985-11-11
IE45642B1 (en) 1982-10-20
FI72723B (en) 1987-03-31
RO78951A2 (en) 1982-04-12
JPS5420500B2 (en) 1979-07-23
NL182477C (en) 1988-03-16
JPS5318578A (en) 1978-02-20
CA1117541A (en) 1982-02-02
FI72119B (en) 1986-12-31
FI831701A0 (en) 1983-05-16
LU77600A1 (en) 1978-02-01
PH13874A (en) 1980-10-24
YU40166B (en) 1985-08-31
NL170955B (en) 1982-08-16
FI73424C (en) 1987-10-09
GB1538375A (en) 1979-01-17
CS203922B2 (en) 1981-03-31
CH626358A5 (en) 1981-11-13
SE445041B (en) 1986-05-26
AT362790B (en) 1981-06-10
PT66694A (en) 1977-07-01
DK326086A (en) 1986-07-09
NO151365C (en) 1985-03-27
NO150559B (en) 1984-07-30
NL8105539A (en) 1982-04-01
SE444565B (en) 1986-04-21
YU43190B (en) 1989-04-30
YU274782A (en) 1983-12-31
NO821847L (en) 1978-02-03
DK153401C (en) 1988-11-28
FI72720C (en) 1987-07-10
MY8100262A (en) 1981-12-31
NO150042B (en) 1984-04-30
SE444564B (en) 1986-04-21
AT364356B (en) 1981-10-12
FI72722B (en) 1987-03-31
HK30581A (en) 1981-07-10
FI831700L (en) 1983-05-16
FI72119C (en) 1987-04-13
FR2372821A1 (en) 1978-06-30
RO78953A (en) 1982-04-12
IE790585L (en) 1978-02-02
JPS5729034B2 (en) 1982-06-19
DE2728499A1 (en) 1978-02-09
NL7706811A (en) 1978-02-06
IE45641L (en) 1978-02-02
NL182478B (en) 1987-10-16
PL199798A1 (en) 1979-08-27
NO821851L (en) 1978-02-03
JPS5618596B2 (en) 1981-04-30
NO150559C (en) 1984-11-07
JPS5436268A (en) 1979-03-16
NO150561B (en) 1984-07-30
DK153483C (en) 1988-11-28
NO821849L (en) 1978-02-03
GB1538372A (en) 1979-01-17
BE855965A (en) 1977-12-21
NZ184342A (en) 1978-09-25
PH15185A (en) 1982-09-10
FI831701L (en) 1983-05-16
PL215006A1 (en) 1979-12-17
IE45645B1 (en) 1982-10-20
DK154079C (en) 1989-02-27
DK325986A (en) 1986-07-09
AU2601777A (en) 1978-09-21
NO150043C (en) 1984-08-15
RO78952A (en) 1982-04-12
NL182476C (en) 1988-03-16
GR68938B (en) 1982-03-29
DK325986D0 (en) 1986-07-09
FI831703A0 (en) 1983-05-16
PL215008A1 (en) 1979-12-17
DD132494A5 (en) 1978-10-04
FI831700A0 (en) 1983-05-16
AR216080A1 (en) 1979-11-30

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Legal Events

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BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
V4 Discontinued because of reaching the maximum lifetime of a patent

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