MY8100287A - Process for the preparation of 6-alkoxy and 6-acyloxy-4-halo-2h pyrones and their use in the synthesis of gamma-pyrones - Google Patents

Process for the preparation of 6-alkoxy and 6-acyloxy-4-halo-2h pyrones and their use in the synthesis of gamma-pyrones

Info

Publication number
MY8100287A
MY8100287A MY287/81A MY8100287A MY8100287A MY 8100287 A MY8100287 A MY 8100287A MY 287/81 A MY287/81 A MY 287/81A MY 8100287 A MY8100287 A MY 8100287A MY 8100287 A MY8100287 A MY 8100287A
Authority
MY
Malaysia
Prior art keywords
pyrones
acyloxy
halo
gamma
alkoxy
Prior art date
Application number
MY287/81A
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 MY8100287A publication Critical patent/MY8100287A/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)
  • Pyridine Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Cosmetics (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Furan Compounds (AREA)
  • Saccharide Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Processing Of Color Television Signals (AREA)
  • Picture Signal Circuits (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Seasonings (AREA)
MY287/81A 1976-08-02 1981-12-30 Process for the preparation of 6-alkoxy and 6-acyloxy-4-halo-2h pyrones and their use in the synthesis of gamma-pyrones MY8100287A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US71090176A 1976-08-02 1976-08-02
US05/721,885 US4082717A (en) 1976-08-02 1976-09-09 Preparation of gamma-pyrones

Publications (1)

Publication Number Publication Date
MY8100287A true MY8100287A (en) 1981-12-31

Family

ID=27108548

Family Applications (3)

Application Number Title Priority Date Filing Date
MY267/81A MY8100267A (en) 1976-08-02 1981-12-30 Process for the preparation of gamma-pyrones
MY262/81A MY8100262A (en) 1976-08-02 1981-12-30 Process for the preparation of 4-halo-6-hydroxy-2h-pyran-3(6h)-ones and heirtheir use in the synthesis of gamma-pyrones
MY287/81A MY8100287A (en) 1976-08-02 1981-12-30 Process for the preparation of 6-alkoxy and 6-acyloxy-4-halo-2h pyrones and their use in the synthesis of gamma-pyrones

Family Applications Before (2)

Application Number Title Priority Date Filing Date
MY267/81A MY8100267A (en) 1976-08-02 1981-12-30 Process for the preparation of gamma-pyrones
MY262/81A MY8100262A (en) 1976-08-02 1981-12-30 Process for the preparation of 4-halo-6-hydroxy-2h-pyran-3(6h)-ones and heirtheir use in the synthesis of gamma-pyrones

Country Status (36)

Country Link
JP (7) JPS5318578A (en)
AR (1) AR216080A1 (en)
AT (3) AT362790B (en)
BE (1) BE855965A (en)
BG (4) BG28849A3 (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) GB1538373A (en)
GR (1) GR68938B (en)
HK (5) HK30681A (en)
HU (4) HU185686B (en)
IE (5) IE45641B1 (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) RO78953A (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
CN101679263B (en) 2007-03-28 2014-01-15 阿普泰克斯科技公司 Fluorinated derivatives of deferiprone
CA2722393A1 (en) 2008-04-25 2009-10-29 Apotex Technologies Inc. Liquid formulation for deferiprone with palatable taste
MA33985B1 (en) 2009-07-03 2013-02-01 Apotex Technologies 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
BG28849A3 (en) 1980-07-15
FI72722C (en) 1987-07-10
BG28988A4 (en) 1980-08-15
NO151365B (en) 1984-12-17
IE45644B1 (en) 1982-10-20
IE790584L (en) 1978-02-02
DE2728499A1 (en) 1978-02-09
FI771934A (en) 1978-02-03
YU146977A (en) 1983-06-30
SE8200522L (en) 1982-01-29
IT1106258B (en) 1985-11-11
IE790585L (en) 1978-02-02
DK153401C (en) 1988-11-28
AT363470B (en) 1981-08-10
IE45641L (en) 1978-02-02
NO150043B (en) 1984-04-30
SE444564B (en) 1986-04-21
DD132494A5 (en) 1978-10-04
NL182477B (en) 1987-10-16
CA1095921A (en) 1981-02-17
IE45641B1 (en) 1982-10-20
FI72119C (en) 1987-04-13
FI72119B (en) 1986-12-31
AT364356B (en) 1981-10-12
JPS5814433B2 (en) 1983-03-18
AR216080A1 (en) 1979-11-30
NO150561C (en) 1984-11-07
NO150043C (en) 1984-08-15
FI831703A0 (en) 1983-05-16
PH13874A (en) 1980-10-24
SE8200520L (en) 1982-01-29
MX4597E (en) 1982-06-25
NL182477C (en) 1988-03-16
FI72720B (en) 1987-03-31
NO834236L (en) 1978-02-03
HK30581A (en) 1981-07-10
FI72720C (en) 1987-07-10
CS203921B2 (en) 1981-03-31
DK326186D0 (en) 1986-07-09
ES470746A1 (en) 1979-01-16
NO821851L (en) 1978-02-03
SU1015826A3 (en) 1983-04-30
DK153484B (en) 1988-07-18
MY8100262A (en) 1981-12-31
FI831700L (en) 1983-05-16
SE8200519L (en) 1982-01-29
NO150560C (en) 1984-11-07
YU43190B (en) 1989-04-30
RO78951A2 (en) 1982-04-12
DK153483C (en) 1988-11-28
SE445041B (en) 1986-05-26
DE2760221C2 (en) 1989-10-05
PL215008A1 (en) 1979-12-17
PH15185A (en) 1982-09-10
FI831704A0 (en) 1983-05-16
NL182805C (en) 1988-05-16
DE2728499C2 (en) 1986-04-03
IE790587L (en) 1978-02-02
EG13080A (en) 1981-03-31
PT66694B (en) 1978-11-17
ES470744A1 (en) 1979-01-16
DK326086D0 (en) 1986-07-09
SE8200521L (en) 1982-01-29
BE855965A (en) 1977-12-21
JPS5436267A (en) 1979-03-16
CH625798A5 (en) 1981-10-15
PL115497B1 (en) 1981-04-30
DK326186A (en) 1986-07-09
NO150042B (en) 1984-04-30
PL215007A1 (en) 1979-12-17
JPS5436271A (en) 1979-03-16
NO150559B (en) 1984-07-30
IE790586L (en) 1978-02-02
NL182476C (en) 1988-03-16
IE45643B1 (en) 1982-10-20
DK325986D0 (en) 1986-07-09
GB1538375A (en) 1979-01-17
NL182478C (en) 1988-03-16
ATA440477A (en) 1980-11-15
PH14625A (en) 1981-10-12
FI831700A0 (en) 1983-05-16
FI72721C (en) 1987-07-10
SE7707035L (en) 1978-02-03
FI72723B (en) 1987-03-31
SE444565B (en) 1986-04-21
JPS5436266A (en) 1979-03-16
SE452616B (en) 1987-12-07
YU42613B (en) 1988-10-31
JPS5318578A (en) 1978-02-20
JPS5618596B2 (en) 1981-04-30
NO150559C (en) 1984-11-07
GB1538372A (en) 1979-01-17
BG29136A3 (en) 1980-09-15
SE445042B (en) 1986-05-26
PH13557A (en) 1980-06-26
HK30481A (en) 1981-07-10
HU186026B (en) 1985-05-28
YU270382A (en) 1983-10-31
GB1538374A (en) 1979-01-17
HU185686B (en) 1985-03-28
PH13926A (en) 1980-11-04
YU40166B (en) 1985-08-31
FI73424B (en) 1987-06-30
YU166383A (en) 1986-02-28
HK30681A (en) 1981-07-10
CA1110254A (en) 1981-10-06
FI831702L (en) 1983-05-16
LU77600A1 (en) 1978-02-01
FR2372821B1 (en) 1980-10-17
CA1117541A (en) 1982-02-02
GR68938B (en) 1982-03-29
NL182476B (en) 1987-10-16
NL8105537A (en) 1982-04-01
JPS5436269A (en) 1979-03-16
HU180040B (en) 1983-01-28
DK153484C (en) 1988-11-28
ES459994A1 (en) 1978-11-16
FI831701A0 (en) 1983-05-16
PL115496B1 (en) 1981-04-30
NZ184342A (en) 1978-09-25
NO150560B (en) 1984-07-30
CH626357A5 (en) 1981-11-13
RO74367A (en) 1981-11-24
NO821847L (en) 1978-02-03
CS203922B2 (en) 1981-03-31
GB1538373A (en) 1979-01-17
NL8105540A (en) 1982-04-01
ATA124380A (en) 1981-03-15
FI831704L (en) 1983-05-16
DK276177A (en) 1978-02-03
BG28989A4 (en) 1980-08-15
NL8105538A (en) 1982-04-01
JPS5420500B2 (en) 1979-07-23
JPS5436270A (en) 1979-03-16
SE433079B (en) 1984-05-07
JPS5436268A (en) 1979-03-16
CS203923B2 (en) 1981-03-31
FI831701L (en) 1983-05-16
NL182805B (en) 1987-12-16
FI72722B (en) 1987-03-31
RO78952A (en) 1982-04-12
HU185687B (en) 1985-03-28
NO772193L (en) 1978-02-03
FI72723C (en) 1987-07-10
NO821848L (en) 1978-02-03
NL182478B (en) 1987-10-16
HK30381A (en) 1981-07-10
PL115586B1 (en) 1981-04-30
CH626358A5 (en) 1981-11-13
ES470743A1 (en) 1979-01-16
NL170955B (en) 1982-08-16
NL7706811A (en) 1978-02-06
DK154079B (en) 1988-10-10
DK153401B (en) 1988-07-11
IE45645B1 (en) 1982-10-20
PL199798A1 (en) 1979-08-27
DK154079C (en) 1989-02-27
DK325986A (en) 1986-07-09
PT66694A (en) 1977-07-01
FR2372821A1 (en) 1978-06-30
FI831703L (en) 1983-05-16
FI72721B (en) 1987-03-31
CH625235A5 (en) 1981-09-15
GB1538371A (en) 1979-01-17
ES470745A1 (en) 1979-01-16
AU2601777A (en) 1978-09-21
JPS5729034B2 (en) 1982-06-19
YU274782A (en) 1983-12-31
IE45642B1 (en) 1982-10-20
NO151365C (en) 1985-03-27
DK326086A (en) 1986-07-09
NO821850L (en) 1978-02-03
NO150042C (en) 1984-08-15
NO821849L (en) 1978-02-03
NL170955C (en) 1983-01-17
AT362790B (en) 1981-06-10
FI831702A0 (en) 1983-05-16
HK30781A (en) 1981-07-10
TR19652A (en) 1979-09-17
NL8105539A (en) 1982-04-01
RO78953A (en) 1982-04-12
JPS5618597B2 (en) 1981-04-30
SE8200518L (en) 1982-01-29
PL215006A1 (en) 1979-12-17
DE2760220C2 (en) 1987-08-20
FI73424C (en) 1987-10-09
ATA124480A (en) 1981-01-15
SU955859A3 (en) 1982-08-30
NO150561B (en) 1984-07-30
BR7703970A (en) 1978-07-04
MY8100267A (en) 1981-12-31
DK153483B (en) 1988-07-18

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