IE45644B1 - Process for the preparation of 4-halo-6-hydroxy-2h-pyran-3(6h)-ones and their use in the synthesis of gamma-pyrones - Google Patents

Process for the preparation of 4-halo-6-hydroxy-2h-pyran-3(6h)-ones and their use in the synthesis of gamma-pyrones

Info

Publication number
IE45644B1
IE45644B1 IE586/79A IE58679A IE45644B1 IE 45644 B1 IE45644 B1 IE 45644B1 IE 586/79 A IE586/79 A IE 586/79A IE 58679 A IE58679 A IE 58679A IE 45644 B1 IE45644 B1 IE 45644B1
Authority
IE
Ireland
Prior art keywords
formula
hydrogen
carbon atoms
gamma
alkyl
Prior art date
Application number
IE586/79A
Other languages
English (en)
Other versions
IE790586L (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 IE790586L publication Critical patent/IE790586L/xx
Publication of IE45644B1 publication Critical patent/IE45644B1/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)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Picture Signal Circuits (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Processing Of Color Television Signals (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)
IE586/79A 1976-08-02 1977-07-29 Process for the preparation of 4-halo-6-hydroxy-2h-pyran-3(6h)-ones and their use in the synthesis of gamma-pyrones IE45644B1 (en)

Applications Claiming Priority (3)

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
IE1587/77A IE45641B1 (en) 1976-08-02 1977-07-29 Process for the preparation of gamma-pyrones

Publications (2)

Publication Number Publication Date
IE790586L IE790586L (en) 1978-02-02
IE45644B1 true IE45644B1 (en) 1982-10-20

Family

ID=27108548

Family Applications (5)

Application Number Title Priority Date Filing Date
IE585/79A IE45643B1 (en) 1976-08-02 1977-07-29 Process for the preparation of 6,6'-oxy bis (4-halo-2h-pyran-3(6h)-ones) and their use in preparing gamma-pyrones
IE587/79A IE45645B1 (en) 1976-08-02 1977-07-29 Process for the preparation of 6-alkoxy and 6-acyloxy-4-halo-2h-pyrones and their use in the synthesis of gamma-pyrones
IE584/79A IE45642B1 (en) 1976-08-02 1977-07-29 Process for the preparation of 6-hydroxy-2h-pyran-3(6h)-ones useful in the synthesis of gamma-pyrones
IE586/79A IE45644B1 (en) 1976-08-02 1977-07-29 Process for the preparation of 4-halo-6-hydroxy-2h-pyran-3(6h)-ones and their use in the synthesis of gamma-pyrones
IE1587/77A IE45641B1 (en) 1976-08-02 1977-07-29 Process for the preparation of gamma-pyrones

Family Applications Before (3)

Application Number Title Priority Date Filing Date
IE585/79A IE45643B1 (en) 1976-08-02 1977-07-29 Process for the preparation of 6,6'-oxy bis (4-halo-2h-pyran-3(6h)-ones) and their use in preparing gamma-pyrones
IE587/79A IE45645B1 (en) 1976-08-02 1977-07-29 Process for the preparation of 6-alkoxy and 6-acyloxy-4-halo-2h-pyrones and their use in the synthesis of gamma-pyrones
IE584/79A IE45642B1 (en) 1976-08-02 1977-07-29 Process for the preparation of 6-hydroxy-2h-pyran-3(6h)-ones useful in the synthesis of gamma-pyrones

Family Applications After (1)

Application Number Title Priority Date Filing Date
IE1587/77A IE45641B1 (en) 1976-08-02 1977-07-29 Process for the preparation of gamma-pyrones

Country Status (36)

Country Link
JP (7) JPS5318578A (pl)
AR (1) AR216080A1 (pl)
AT (3) AT362790B (pl)
BE (1) BE855965A (pl)
BG (4) BG28989A4 (pl)
BR (1) BR7703970A (pl)
CA (3) CA1095921A (pl)
CH (4) CH625798A5 (pl)
CS (3) CS203921B2 (pl)
DD (1) DD132494A5 (pl)
DE (3) DE2728499C2 (pl)
DK (4) DK153483C (pl)
EG (1) EG13080A (pl)
ES (5) ES459994A1 (pl)
FI (6) FI72722C (pl)
FR (1) FR2372821A1 (pl)
GB (5) GB1538374A (pl)
GR (1) GR68938B (pl)
HK (5) HK30781A (pl)
HU (4) HU186026B (pl)
IE (5) IE45643B1 (pl)
IT (1) IT1106258B (pl)
LU (1) LU77600A1 (pl)
MX (1) MX4597E (pl)
MY (3) MY8100287A (pl)
NL (5) NL170955C (pl)
NO (7) NO150561C (pl)
NZ (1) NZ184342A (pl)
PH (5) PH13557A (pl)
PL (4) PL115496B1 (pl)
PT (1) PT66694B (pl)
RO (4) RO74367A (pl)
SE (6) SE433079B (pl)
SU (2) SU955859A3 (pl)
TR (1) TR19652A (pl)
YU (4) YU40166B (pl)

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
FR2402654A1 (fr) * 1977-09-12 1979-04-06 Shinetsu Chemical Co Nouveaux derives de x tetrahydropyrannone(5)
JPS5444675A (en) * 1977-09-12 1979-04-09 Shin Etsu Chem Co Ltd Production of 3-hydroxy-4-pyrone analog
JPS5741226U (pl) * 1980-08-20 1982-03-05
JPS59135008U (ja) * 1983-02-28 1984-09-10 松下電工株式会社 分電盤装置
JPS6050245A (ja) * 1983-08-29 1985-03-19 Nissan Motor Co Ltd 内燃機関の燃料噴射装置
JPH0226945Y2 (pl) * 1985-09-11 1990-07-20
JP2586607B2 (ja) * 1987-10-30 1997-03-05 日産化学工業株式会社 光学活性アルコールの製造法
US8026261B2 (en) 2007-03-28 2011-09-27 Apotex Technologies Inc. Fluorinated derivatives of deferiprone
DK2268282T3 (en) 2008-04-25 2014-11-24 Apotex Technologies Inc Liquid formulation of deferiprone with pleasant taste
SI2448922T1 (sl) 2009-07-03 2014-12-31 Apotex Technologies Inc. Fluorirani derivati 3-hidroksipiridin-4-onov
WO2017168309A1 (en) * 2016-03-29 2017-10-05 Dr. Reddy’S Laboratories Limited Process for preparation of eribulin and intermediates thereof
CN108609456B (zh) * 2016-12-13 2021-03-12 奥的斯电梯公司 可打开扩展面板及具有其的电梯吊顶，轿厢和系统
CN111606879A (zh) * 2020-05-25 2020-09-01 安徽金禾实业股份有限公司 一锅法制备2-羟甲基-3-烷氧基-4h-吡喃-4-酮的方法

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 (pl) * 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
FI72720C (fi) 1987-07-10
DK153483C (da) 1988-11-28
NO150559B (no) 1984-07-30
JPS5420500B2 (pl) 1979-07-23
DK154079C (da) 1989-02-27
DK153401C (da) 1988-11-28
FR2372821B1 (pl) 1980-10-17
SE7707035L (sv) 1978-02-03
NO150043C (no) 1984-08-15
YU166383A (en) 1986-02-28
DE2728499A1 (de) 1978-02-09
IE45641B1 (en) 1982-10-20
NL182805B (nl) 1987-12-16
BG28989A4 (en) 1980-08-15
NL8105539A (nl) 1982-04-01
SE8200519L (sv) 1982-01-29
NL7706811A (nl) 1978-02-06
SE8200520L (sv) 1982-01-29
RO78952A (ro) 1982-04-12
CH625235A5 (en) 1981-09-15
FI72720B (fi) 1987-03-31
NL8105537A (nl) 1982-04-01
DD132494A5 (de) 1978-10-04
GB1538371A (en) 1979-01-17
FI771934A (pl) 1978-02-03
NO821847L (no) 1978-02-03
FI72721B (fi) 1987-03-31
BR7703970A (pt) 1978-07-04
DK326186A (da) 1986-07-09
HU186026B (en) 1985-05-28
HK30581A (en) 1981-07-10
BG28988A4 (en) 1980-08-15
FI831703A0 (fi) 1983-05-16
JPS5436271A (en) 1979-03-16
NZ184342A (en) 1978-09-25
JPS5618597B2 (pl) 1981-04-30
SE8200521L (sv) 1982-01-29
SE8200522L (sv) 1982-01-29
NL182478C (nl) 1988-03-16
MY8100262A (en) 1981-12-31
AT364356B (de) 1981-10-12
NL8105538A (nl) 1982-04-01
JPS5814433B2 (ja) 1983-03-18
SE445042B (sv) 1986-05-26
CA1117541A (en) 1982-02-02
FI72721C (fi) 1987-07-10
FI72119B (fi) 1986-12-31
PT66694B (en) 1978-11-17
YU274782A (en) 1983-12-31
ES470746A1 (es) 1979-01-16
CS203921B2 (en) 1981-03-31
DK326186D0 (da) 1986-07-09
GB1538373A (en) 1979-01-17
BG29136A3 (en) 1980-09-15
SE8200518L (sv) 1982-01-29
IE45641L (en) 1978-02-02
JPS5318578A (en) 1978-02-20
PT66694A (en) 1977-07-01
NO821851L (no) 1978-02-03
NO150560B (no) 1984-07-30
HK30781A (en) 1981-07-10
FI72723B (fi) 1987-03-31
PH15185A (en) 1982-09-10
NO150042B (no) 1984-04-30
NO150561B (no) 1984-07-30
PL215006A1 (pl) 1979-12-17
NO151365B (no) 1984-12-17
HU185687B (en) 1985-03-28
JPS5436269A (en) 1979-03-16
HK30481A (en) 1981-07-10
JPS5436268A (en) 1979-03-16
FI831704A0 (fi) 1983-05-16
FI72119C (fi) 1987-04-13
FI831700A0 (fi) 1983-05-16
DK326086A (da) 1986-07-09
EG13080A (en) 1981-03-31
JPS5618596B2 (pl) 1981-04-30
NO150559C (no) 1984-11-07
GB1538372A (en) 1979-01-17
HK30681A (en) 1981-07-10
DK154079B (da) 1988-10-10
NL8105540A (nl) 1982-04-01
ATA124480A (de) 1981-01-15
PL115496B1 (en) 1981-04-30
PL115497B1 (en) 1981-04-30
DK153401B (da) 1988-07-11
FI73424B (fi) 1987-06-30
PL115586B1 (en) 1981-04-30
RO78951A2 (ro) 1982-04-12
IE790584L (en) 1978-02-02
NL182477C (nl) 1988-03-16
IE45643B1 (en) 1982-10-20
NL182476B (nl) 1987-10-16
RO78953A (ro) 1982-04-12
AT363470B (de) 1981-08-10
FI831702A0 (fi) 1983-05-16
IE45642B1 (en) 1982-10-20
LU77600A1 (pl) 1978-02-01
HU180040B (en) 1983-01-28
FI831701L (fi) 1983-05-16
NO821848L (no) 1978-02-03
ES470745A1 (es) 1979-01-16
DK153483B (da) 1988-07-18
NL170955C (nl) 1983-01-17
FI72723C (fi) 1987-07-10
CS203922B2 (en) 1981-03-31
YU146977A (en) 1983-06-30
HK30381A (en) 1981-07-10
CS203923B2 (en) 1981-03-31
DE2728499C2 (de) 1986-04-03
SE445041B (sv) 1986-05-26
DK153484C (da) 1988-11-28
BG28849A3 (en) 1980-07-15
FI72722C (fi) 1987-07-10
IT1106258B (it) 1985-11-11
NO834236L (no) 1978-02-03
GR68938B (pl) 1982-03-29
CH625798A5 (en) 1981-10-15
SE444565B (sv) 1986-04-21
AR216080A1 (es) 1979-11-30
BE855965A (fr) 1977-12-21
PH13557A (en) 1980-06-26
AU2601777A (en) 1978-09-21
PH13926A (en) 1980-11-04
DE2760220C2 (pl) 1987-08-20
NO150043B (no) 1984-04-30
FR2372821A1 (fr) 1978-06-30
MX4597E (es) 1982-06-25
RO74367A (ro) 1981-11-24
NO150560C (no) 1984-11-07
DK325986A (da) 1986-07-09
YU270382A (en) 1983-10-31
JPS5729034B2 (pl) 1982-06-19
MY8100287A (en) 1981-12-31
YU43190B (en) 1989-04-30
PH13874A (en) 1980-10-24
NL182476C (nl) 1988-03-16
CH626358A5 (en) 1981-11-13
PL215007A1 (pl) 1979-12-17
NL170955B (nl) 1982-08-16
FI73424C (fi) 1987-10-09
CA1110254A (en) 1981-10-06
IE790585L (en) 1978-02-02
NO151365C (no) 1985-03-27
FI72722B (fi) 1987-03-31
PH14625A (en) 1981-10-12
CA1095921A (en) 1981-02-17
ES470744A1 (es) 1979-01-16
NL182478B (nl) 1987-10-16
FI831701A0 (fi) 1983-05-16
NO150561C (no) 1984-11-07
SU1015826A3 (ru) 1983-04-30
GB1538375A (en) 1979-01-17
JPS5436266A (en) 1979-03-16
SE452616B (sv) 1987-12-07
JPS5436267A (en) 1979-03-16
PL215008A1 (pl) 1979-12-17
NO150042C (no) 1984-08-15
YU40166B (en) 1985-08-31
FI831702L (fi) 1983-05-16
IE790587L (en) 1978-02-02
ES459994A1 (es) 1978-11-16
GB1538374A (en) 1979-01-17
HU185686B (en) 1985-03-28
NO821849L (no) 1978-02-03
DK153484B (da) 1988-07-18
DK325986D0 (da) 1986-07-09
FI831704L (fi) 1983-05-16
ATA124380A (de) 1981-03-15
PL199798A1 (pl) 1979-08-27
ES470743A1 (es) 1979-01-16
IE790586L (en) 1978-02-02
MY8100267A (en) 1981-12-31
NO772193L (no) 1978-02-03
DK326086D0 (da) 1986-07-09
DE2760221C2 (pl) 1989-10-05
NL182477B (nl) 1987-10-16
CH626357A5 (en) 1981-11-13
IE45645B1 (en) 1982-10-20
AT362790B (de) 1981-06-10
YU42613B (en) 1988-10-31
DK276177A (da) 1978-02-03
ATA440477A (de) 1980-11-15
FI831700L (fi) 1983-05-16
JPS5436270A (en) 1979-03-16
SE433079B (sv) 1984-05-07
TR19652A (tr) 1979-09-17
SE444564B (sv) 1986-04-21
NO821850L (no) 1978-02-03
FI831703L (fi) 1983-05-16
SU955859A3 (ru) 1982-08-30
NL182805C (nl) 1988-05-16

Similar Documents

Publication Publication Date Title
US5708175A (en) Process for producing 4-trifluoromethylnicotinic acid
IE45644B1 (en) Process for the preparation of 4-halo-6-hydroxy-2h-pyran-3(6h)-ones and their use in the synthesis of gamma-pyrones
HU199156B (en) New process for producing androsta-1,4-diene-3,17-dione-methylene derivatives
US4082717A (en) Preparation of gamma-pyrones
US4126624A (en) Preparation of gamma-pyrones from 3-substituted furans
US3989738A (en) Method of preparing phenolic antioxidants by condensing active methylene compounds with 3,5-di-tert alkyl-4-hydroxybenzylpyridinium salts
US4025537A (en) Preparation of 3-carboalkoxy or 3-alkanoyl furans
US4435584A (en) Preparation of gamma-pyrones
US4490296A (en) Compositions and method
US4182880A (en) 1,8-Naphthyridine compounds and process for preparing the same
Apple et al. 2-Aminobenzaldehydes from quinolinium salts and alkaline hydrogen peroxide
Becher et al. Pyridinethiones. IX preparation of ricinidine, thioricinidine and other 2 (1H)‐pyridones and‐thiones related to nicotinic acid
US5276152A (en) Process for the production of 4,6-dialkoxypyrimidines
US5166354A (en) Quinoline derivatives and processes for the preparation thereof
Barluenga et al. Synthesis and reactions of β-enamino phosphonium salts. Preparation of 2-vinyl-1-aza-1, 3-dienes and penta-l, 4-dien-3-ones
US4179452A (en) 3α,6α-Dihydroxy-5β-cholestan-24-one derivatives and process for preparing the same
US4625033A (en) Process for preparing 5-aza-indole and intermediates used in this process
US4289704A (en) Preparation of gamma-pyrones
US4387235A (en) Intermediates for the preparation of gamma-pyrones
US4009178A (en) Brominating and oxidizing agent and method of using same
US4147705A (en) Preparation of gamma-pyrones
US4191693A (en) Preparation of gamma-pyrones from 3-substituted furans
US4368331A (en) 3,4-Dihalo-tetrahydrophyran-5-one useful as intermediates for the preparation of gamma-pyrones
US4323506A (en) Preparation of gamma-pyrones
US4173572A (en) Preparation of gamma-pyrones from 3-substituted furans

Legal Events

Date Code Title Description
MK9A Patent expired