GB1538375A - 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
GB1538375A
GB1538375A GB4243/78A GB424378A GB1538375A GB 1538375 A GB1538375 A GB 1538375A GB 4243/78 A GB4243/78 A GB 4243/78A GB 424378 A GB424378 A GB 424378A GB 1538375 A GB1538375 A GB 1538375A
Authority
GB
United Kingdom
Prior art keywords
pyrones
acyloxy
halo
gamma
alkoxy
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB4243/78A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pfizer Inc
Original Assignee
Pfizer Inc
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 Inc filed Critical Pfizer Inc
Publication of GB1538375A publication Critical patent/GB1538375A/en
Expired legal-status Critical Current

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
GB4243/78A 1976-08-02 1977-07-21 Process for the preparation of 6-alkoxy and 6-acyloxy-4-halo-2h-pyrones and their use in the synthesis of gamma-pyrones Expired GB1538375A (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
GB1538375A true GB1538375A (en) 1979-01-17

Family

ID=27108548

Family Applications (5)

Application Number Title Priority Date Filing Date
GB30759/77A Expired GB1538371A (en) 1976-08-02 1977-07-21 Process for the preparation of gamma-pyrones
GB4241/78A Expired GB1538373A (en) 1976-08-02 1977-07-21 Process for the preparation of 6,6'-oxy bis(4-halo-2h-pyran-3(6h)-ones)and their use in preparing gamma-pyrones
GB4240/78A Expired GB1538372A (en) 1976-08-02 1977-07-21 Process for the preparation of 6-hydroxy-2h-pyran-3(6h)-ones useful in the synthesis of gamma-pyrones
GB4242/78A Expired GB1538374A (en) 1976-08-02 1977-07-21 Process for the preparation of 4-halo-6-hydroxy-2h-pyran-3(6h)-ones and their use in the synthesis of gamma-pyrones
GB4243/78A Expired GB1538375A (en) 1976-08-02 1977-07-21 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 (4)

Application Number Title Priority Date Filing Date
GB30759/77A Expired GB1538371A (en) 1976-08-02 1977-07-21 Process for the preparation of gamma-pyrones
GB4241/78A Expired GB1538373A (en) 1976-08-02 1977-07-21 Process for the preparation of 6,6'-oxy bis(4-halo-2h-pyran-3(6h)-ones)and their use in preparing gamma-pyrones
GB4240/78A Expired GB1538372A (en) 1976-08-02 1977-07-21 Process for the preparation of 6-hydroxy-2h-pyran-3(6h)-ones useful in the synthesis of gamma-pyrones
GB4242/78A Expired GB1538374A (en) 1976-08-02 1977-07-21 Process for the preparation of 4-halo-6-hydroxy-2h-pyran-3(6h)-ones and their use in the synthesis of gamma-pyrones

Country Status (36)

Country Link
JP (7) JPS5318578A (hu)
AR (1) AR216080A1 (hu)
AT (3) AT362790B (hu)
BE (1) BE855965A (hu)
BG (4) BG28989A4 (hu)
BR (1) BR7703970A (hu)
CA (3) CA1095921A (hu)
CH (4) CH625798A5 (hu)
CS (3) CS203921B2 (hu)
DD (1) DD132494A5 (hu)
DE (3) DE2760221C2 (hu)
DK (4) DK153483C (hu)
EG (1) EG13080A (hu)
ES (5) ES459994A1 (hu)
FI (6) FI72722C (hu)
FR (1) FR2372821A1 (hu)
GB (5) GB1538371A (hu)
GR (1) GR68938B (hu)
HK (5) HK30681A (hu)
HU (4) HU186026B (hu)
IE (5) IE45644B1 (hu)
IT (1) IT1106258B (hu)
LU (1) LU77600A1 (hu)
MX (1) MX4597E (hu)
MY (3) MY8100287A (hu)
NL (5) NL170955C (hu)
NO (7) NO150561C (hu)
NZ (1) NZ184342A (hu)
PH (5) PH13557A (hu)
PL (4) PL215008A1 (hu)
PT (1) PT66694B (hu)
RO (4) RO74367A (hu)
SE (6) SE433079B (hu)
SU (2) SU955859A3 (hu)
TR (1) TR19652A (hu)
YU (4) YU40166B (hu)

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 (hu) * 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 (hu) * 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
CA2627529A1 (en) 2007-03-28 2008-09-28 Apotex Technologies Inc. Fluorinated derivatives of deferiprone
ES2539414T3 (es) 2008-04-25 2015-06-30 Apotex Technologies Inc. Formulación líquida para deferiprona con sabor apetecible
SG177462A1 (en) 2009-07-03 2012-02-28 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 (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 (hu) * 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
ES470746A1 (es) 1979-01-16
PH13926A (en) 1980-11-04
MY8100267A (en) 1981-12-31
NO150042C (no) 1984-08-15
JPS5318578A (en) 1978-02-20
JPS5436267A (en) 1979-03-16
RO78953A (ro) 1982-04-12
HU185687B (en) 1985-03-28
NL182476C (nl) 1988-03-16
FI72722C (fi) 1987-07-10
NL170955C (nl) 1983-01-17
ES470744A1 (es) 1979-01-16
CA1117541A (en) 1982-02-02
PH13557A (en) 1980-06-26
DE2760221C2 (hu) 1989-10-05
DK326186A (da) 1986-07-09
FI72720B (fi) 1987-03-31
CS203921B2 (en) 1981-03-31
DK326186D0 (da) 1986-07-09
NO150561C (no) 1984-11-07
IE45642B1 (en) 1982-10-20
MX4597E (es) 1982-06-25
BG28989A4 (en) 1980-08-15
JPS5420500B2 (hu) 1979-07-23
NO150043C (no) 1984-08-15
NO150560C (no) 1984-11-07
FI831702A0 (fi) 1983-05-16
RO78951A2 (ro) 1982-04-12
SE452616B (sv) 1987-12-07
FI73424C (fi) 1987-10-09
SE444565B (sv) 1986-04-21
FI72720C (fi) 1987-07-10
NO834236L (no) 1978-02-03
FI831703A0 (fi) 1983-05-16
FI72119B (fi) 1986-12-31
BG28849A3 (en) 1980-07-15
PT66694B (en) 1978-11-17
DK153483B (da) 1988-07-18
IE45641L (en) 1978-02-02
FI831704A0 (fi) 1983-05-16
IE45641B1 (en) 1982-10-20
HU180040B (en) 1983-01-28
IE45643B1 (en) 1982-10-20
JPS5436269A (en) 1979-03-16
NL7706811A (nl) 1978-02-06
ATA440477A (de) 1980-11-15
SU1015826A3 (ru) 1983-04-30
IE790584L (en) 1978-02-02
NL182805B (nl) 1987-12-16
NO151365C (no) 1985-03-27
NL8105538A (nl) 1982-04-01
DK154079B (da) 1988-10-10
BE855965A (fr) 1977-12-21
CA1110254A (en) 1981-10-06
PL115586B1 (en) 1981-04-30
FI72723B (fi) 1987-03-31
MY8100262A (en) 1981-12-31
SE8200518L (sv) 1982-01-29
IE790586L (en) 1978-02-02
SE8200520L (sv) 1982-01-29
SE444564B (sv) 1986-04-21
NO150043B (no) 1984-04-30
GB1538373A (en) 1979-01-17
IE790585L (en) 1978-02-02
MY8100287A (en) 1981-12-31
YU43190B (en) 1989-04-30
NL182478B (nl) 1987-10-16
BG29136A3 (en) 1980-09-15
FI831702L (fi) 1983-05-16
TR19652A (tr) 1979-09-17
NL170955B (nl) 1982-08-16
DK153484B (da) 1988-07-18
NL182477C (nl) 1988-03-16
SE8200519L (sv) 1982-01-29
YU270382A (en) 1983-10-31
NO772193L (no) 1978-02-03
PH14625A (en) 1981-10-12
FI72119C (fi) 1987-04-13
NL8105537A (nl) 1982-04-01
PH13874A (en) 1980-10-24
ES470745A1 (es) 1979-01-16
CH626357A5 (en) 1981-11-13
DK326086A (da) 1986-07-09
YU166383A (en) 1986-02-28
NL8105540A (nl) 1982-04-01
DE2728499C2 (de) 1986-04-03
IE45645B1 (en) 1982-10-20
CH625235A5 (en) 1981-09-15
CS203923B2 (en) 1981-03-31
LU77600A1 (hu) 1978-02-01
ES459994A1 (es) 1978-11-16
NO821849L (no) 1978-02-03
ATA124480A (de) 1981-01-15
NO821851L (no) 1978-02-03
JPS5618597B2 (hu) 1981-04-30
SE8200521L (sv) 1982-01-29
JPS5436270A (en) 1979-03-16
SE433079B (sv) 1984-05-07
NO150559B (no) 1984-07-30
AU2601777A (en) 1978-09-21
YU42613B (en) 1988-10-31
NO150042B (no) 1984-04-30
DE2760220C2 (hu) 1987-08-20
FI72723C (fi) 1987-07-10
YU274782A (en) 1983-12-31
PL199798A1 (pl) 1979-08-27
FI831703L (fi) 1983-05-16
NL8105539A (nl) 1982-04-01
DK153401B (da) 1988-07-11
YU146977A (en) 1983-06-30
FI771934A (hu) 1978-02-03
FR2372821A1 (fr) 1978-06-30
JPS5729034B2 (hu) 1982-06-19
JPS5618596B2 (hu) 1981-04-30
NO150559C (no) 1984-11-07
JPS5814433B2 (ja) 1983-03-18
JPS5436271A (en) 1979-03-16
HU186026B (en) 1985-05-28
AT362790B (de) 1981-06-10
SE445041B (sv) 1986-05-26
CH625798A5 (en) 1981-10-15
NL182478C (nl) 1988-03-16
HK30381A (en) 1981-07-10
JPS5436266A (en) 1979-03-16
DK326086D0 (da) 1986-07-09
PH15185A (en) 1982-09-10
SU955859A3 (ru) 1982-08-30
RO78952A (ro) 1982-04-12
SE8200522L (sv) 1982-01-29
NL182476B (nl) 1987-10-16
NO150560B (no) 1984-07-30
FI831701L (fi) 1983-05-16
FI831704L (fi) 1983-05-16
FR2372821B1 (hu) 1980-10-17
NO150561B (no) 1984-07-30
PL215006A1 (pl) 1979-12-17
DD132494A5 (de) 1978-10-04
DK153484C (da) 1988-11-28
NL182477B (nl) 1987-10-16
BR7703970A (pt) 1978-07-04
CA1095921A (en) 1981-02-17
ATA124380A (de) 1981-03-15
PT66694A (en) 1977-07-01
PL215008A1 (pl) 1979-12-17
HK30481A (en) 1981-07-10
GR68938B (hu) 1982-03-29
FI831701A0 (fi) 1983-05-16
FI72722B (fi) 1987-03-31
CS203922B2 (en) 1981-03-31
CH626358A5 (en) 1981-11-13
PL115496B1 (en) 1981-04-30
HK30581A (en) 1981-07-10
FI831700L (fi) 1983-05-16
DK325986D0 (da) 1986-07-09
DK153483C (da) 1988-11-28
NZ184342A (en) 1978-09-25
DE2728499A1 (de) 1978-02-09
AR216080A1 (es) 1979-11-30
FI73424B (fi) 1987-06-30
NO151365B (no) 1984-12-17
GB1538374A (en) 1979-01-17
HU185686B (en) 1985-03-28
ES470743A1 (es) 1979-01-16
IT1106258B (it) 1985-11-11
DK325986A (da) 1986-07-09
IE45644B1 (en) 1982-10-20
NO821848L (no) 1978-02-03
NL182805C (nl) 1988-05-16
DK154079C (da) 1989-02-27
EG13080A (en) 1981-03-31
HK30781A (en) 1981-07-10
FI72721B (fi) 1987-03-31
PL215007A1 (pl) 1979-12-17
SE445042B (sv) 1986-05-26
SE7707035L (sv) 1978-02-03
JPS5436268A (en) 1979-03-16
GB1538371A (en) 1979-01-17
AT364356B (de) 1981-10-12
PL115497B1 (en) 1981-04-30
RO74367A (ro) 1981-11-24
HK30681A (en) 1981-07-10
FI831700A0 (fi) 1983-05-16
YU40166B (en) 1985-08-31
NO821847L (no) 1978-02-03
AT363470B (de) 1981-08-10
GB1538372A (en) 1979-01-17
FI72721C (fi) 1987-07-10
IE790587L (en) 1978-02-02
NO821850L (no) 1978-02-03
DK153401C (da) 1988-11-28
DK276177A (da) 1978-02-03
BG28988A4 (en) 1980-08-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19970720