HK30781A - Process for the preparation of 6-alkoxy and 6-acyloxy-4-halo-2h-pyrones and their use in the synthesis of gamma-pyroes - Google Patents

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

Info

Publication number
HK30781A
HK30781A HK307/81A HK30781A HK30781A HK 30781 A HK30781 A HK 30781A HK 307/81 A HK307/81 A HK 307/81A HK 30781 A HK30781 A HK 30781A HK 30781 A HK30781 A HK 30781A
Authority
HK
Hong Kong
Prior art keywords
pyroes
pyrones
acyloxy
halo
gamma
Prior art date
Application number
HK307/81A
Other languages
English (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 HK30781A publication Critical patent/HK30781A/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
    • C07D309/32—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
HK307/81A 1976-08-02 1981-07-02 Process for the preparation of 6-alkoxy and 6-acyloxy-4-halo-2h-pyrones and their use in the synthesis of gamma-pyroes HK30781A (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
HK30781A true HK30781A (en) 1981-07-10

Family

ID=27108548

Family Applications (5)

Application Number Title Priority Date Filing Date
HK304/81A HK30481A (en) 1976-08-02 1981-07-02 Process for the preparation of 6-hydroxy-2h-pyran-3(6h)-ones useful in the synthesis of gamma-pyrones
HK306/81A HK30681A (en) 1976-08-02 1981-07-02 Process for the preparation of 4-halo-6-hydroxy-2h-pyran-3(6h)-ones and their use in the synthesis of gamma-pyrones
HK307/81A HK30781A (en) 1976-08-02 1981-07-02 Process for the preparation of 6-alkoxy and 6-acyloxy-4-halo-2h-pyrones and their use in the synthesis of gamma-pyroes
HK303/81A HK30381A (en) 1976-08-02 1981-07-02 Process for the preparation of gamma-pyrones
HK305/81A HK30581A (en) 1976-08-02 1981-07-02 Process for the preparation of 6,6'-oxy bis(4-halo-2h-pyran-3(6h)-ones)and their use in preparing gamma-pyrones

Family Applications Before (2)

Application Number Title Priority Date Filing Date
HK304/81A HK30481A (en) 1976-08-02 1981-07-02 Process for the preparation of 6-hydroxy-2h-pyran-3(6h)-ones useful in the synthesis of gamma-pyrones
HK306/81A HK30681A (en) 1976-08-02 1981-07-02 Process for the preparation of 4-halo-6-hydroxy-2h-pyran-3(6h)-ones and their use in the synthesis of gamma-pyrones

Family Applications After (2)

Application Number Title Priority Date Filing Date
HK303/81A HK30381A (en) 1976-08-02 1981-07-02 Process for the preparation of gamma-pyrones
HK305/81A HK30581A (en) 1976-08-02 1981-07-02 Process for the preparation of 6,6'-oxy bis(4-halo-2h-pyran-3(6h)-ones)and their use in preparing gamma-pyrones

Country Status (36)

Country Link
JP (7) JPS5318578A (xx)
AR (1) AR216080A1 (xx)
AT (3) AT362790B (xx)
BE (1) BE855965A (xx)
BG (4) BG28849A3 (xx)
BR (1) BR7703970A (xx)
CA (3) CA1095921A (xx)
CH (4) CH625798A5 (xx)
CS (3) CS203921B2 (xx)
DD (1) DD132494A5 (xx)
DE (3) DE2760221C2 (xx)
DK (4) DK153483C (xx)
EG (1) EG13080A (xx)
ES (5) ES459994A1 (xx)
FI (6) FI72722C (xx)
FR (1) FR2372821A1 (xx)
GB (5) GB1538375A (xx)
GR (1) GR68938B (xx)
HK (5) HK30481A (xx)
HU (4) HU185687B (xx)
IE (5) IE45643B1 (xx)
IT (1) IT1106258B (xx)
LU (1) LU77600A1 (xx)
MX (1) MX4597E (xx)
MY (3) MY8100262A (xx)
NL (5) NL170955C (xx)
NO (7) NO150561C (xx)
NZ (1) NZ184342A (xx)
PH (5) PH13557A (xx)
PL (4) PL115497B1 (xx)
PT (1) PT66694B (xx)
RO (4) RO78953A (xx)
SE (6) SE433079B (xx)
SU (2) SU955859A3 (xx)
TR (1) TR19652A (xx)
YU (4) YU40166B (xx)

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 (xx) * 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 (xx) * 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
CL2008000887A1 (es) 2007-03-28 2008-05-30 Apotex Technologies Inc Compuestos derivados de 3-hidroxi-1h-pirimidin-4-ona o 3-hidroxi-piran-4-ona; procedimiento de preparacion; composicion farmaceutica que comprende a dichos compuestos; y su uso para tratar una enfermedad neurodegenerativa causada por la presencia de
KR101490721B1 (ko) 2008-04-25 2015-02-06 아포텍스 테크놀로지스 인크. 감칠맛을 가진 디페리프론용 액상 제제
ME01911B (me) 2009-07-03 2014-12-20 Apotex Tech Inc Fluorisani derivati 3-hidroksipiridin-4-ona
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 (xx) * 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
JPS5318578A (en) 1978-02-20
RO78953A (ro) 1982-04-12
YU43190B (en) 1989-04-30
DK326086D0 (da) 1986-07-09
GR68938B (xx) 1982-03-29
FR2372821A1 (fr) 1978-06-30
FI72721B (fi) 1987-03-31
DE2728499A1 (de) 1978-02-09
BG28988A4 (en) 1980-08-15
EG13080A (en) 1981-03-31
SE8200520L (sv) 1982-01-29
JPS5618596B2 (xx) 1981-04-30
NO150559C (no) 1984-11-07
IE45643B1 (en) 1982-10-20
DK326186A (da) 1986-07-09
DK154079C (da) 1989-02-27
FI831703A0 (fi) 1983-05-16
DK325986D0 (da) 1986-07-09
PT66694A (en) 1977-07-01
HK30481A (en) 1981-07-10
NL182477B (nl) 1987-10-16
NO150043C (no) 1984-08-15
RO78951A2 (ro) 1982-04-12
FI72119C (fi) 1987-04-13
NL8105538A (nl) 1982-04-01
PH14625A (en) 1981-10-12
NO821848L (no) 1978-02-03
ATA124380A (de) 1981-03-15
MX4597E (es) 1982-06-25
DK153483B (da) 1988-07-18
DK153483C (da) 1988-11-28
NO150559B (no) 1984-07-30
AR216080A1 (es) 1979-11-30
BG28989A4 (en) 1980-08-15
DK153484B (da) 1988-07-18
DK154079B (da) 1988-10-10
FI831704L (fi) 1983-05-16
NL182478B (nl) 1987-10-16
JPS5814433B2 (ja) 1983-03-18
CS203923B2 (en) 1981-03-31
NL182805B (nl) 1987-12-16
RO74367A (ro) 1981-11-24
NL170955C (nl) 1983-01-17
IE790586L (en) 1978-02-02
NL8105537A (nl) 1982-04-01
NL170955B (nl) 1982-08-16
DK153484C (da) 1988-11-28
CH625798A5 (en) 1981-10-15
IE45644B1 (en) 1982-10-20
SE8200519L (sv) 1982-01-29
SE445042B (sv) 1986-05-26
IE45641L (en) 1978-02-02
FI831702L (fi) 1983-05-16
PL199798A1 (pl) 1979-08-27
NO150561C (no) 1984-11-07
TR19652A (tr) 1979-09-17
PL115496B1 (en) 1981-04-30
JPS5436266A (en) 1979-03-16
FI72723B (fi) 1987-03-31
YU42613B (en) 1988-10-31
CH626357A5 (en) 1981-11-13
ES459994A1 (es) 1978-11-16
MY8100262A (en) 1981-12-31
JPS5436271A (en) 1979-03-16
NO150560B (no) 1984-07-30
NL7706811A (nl) 1978-02-06
RO78952A (ro) 1982-04-12
FI831702A0 (fi) 1983-05-16
LU77600A1 (xx) 1978-02-01
NO150560C (no) 1984-11-07
HU186026B (en) 1985-05-28
BR7703970A (pt) 1978-07-04
HU180040B (en) 1983-01-28
NO821851L (no) 1978-02-03
AT364356B (de) 1981-10-12
NL8105539A (nl) 1982-04-01
IT1106258B (it) 1985-11-11
IE790584L (en) 1978-02-02
YU40166B (en) 1985-08-31
SE445041B (sv) 1986-05-26
BG28849A3 (en) 1980-07-15
NO821849L (no) 1978-02-03
DK153401C (da) 1988-11-28
IE45641B1 (en) 1982-10-20
CA1110254A (en) 1981-10-06
DD132494A5 (de) 1978-10-04
PH13557A (en) 1980-06-26
NL182478C (nl) 1988-03-16
PL115586B1 (en) 1981-04-30
NO821847L (no) 1978-02-03
BG29136A3 (en) 1980-09-15
HU185687B (en) 1985-03-28
SE444564B (sv) 1986-04-21
NL182476B (nl) 1987-10-16
DK325986A (da) 1986-07-09
GB1538374A (en) 1979-01-17
HU185686B (en) 1985-03-28
HK30581A (en) 1981-07-10
FI72722C (fi) 1987-07-10
PL215006A1 (pl) 1979-12-17
ES470746A1 (es) 1979-01-16
ATA440477A (de) 1980-11-15
SE8200522L (sv) 1982-01-29
HK30681A (en) 1981-07-10
JPS5618597B2 (xx) 1981-04-30
SE8200521L (sv) 1982-01-29
JPS5436270A (en) 1979-03-16
SE433079B (sv) 1984-05-07
SE452616B (sv) 1987-12-07
FI73424C (fi) 1987-10-09
NO150043B (no) 1984-04-30
SU955859A3 (ru) 1982-08-30
FI831701A0 (fi) 1983-05-16
IE790585L (en) 1978-02-02
PH15185A (en) 1982-09-10
YU166383A (en) 1986-02-28
FI831704A0 (fi) 1983-05-16
NZ184342A (en) 1978-09-25
NL8105540A (nl) 1982-04-01
NO772193L (no) 1978-02-03
FR2372821B1 (xx) 1980-10-17
FI72119B (fi) 1986-12-31
DE2760221C2 (xx) 1989-10-05
NO821850L (no) 1978-02-03
SE444565B (sv) 1986-04-21
IE790587L (en) 1978-02-02
HK30381A (en) 1981-07-10
NO150042B (no) 1984-04-30
JPS5436267A (en) 1979-03-16
NO150561B (no) 1984-07-30
NO151365B (no) 1984-12-17
PL215007A1 (pl) 1979-12-17
ES470743A1 (es) 1979-01-16
AT363470B (de) 1981-08-10
PH13926A (en) 1980-11-04
FI72720C (fi) 1987-07-10
GB1538373A (en) 1979-01-17
PL215008A1 (pl) 1979-12-17
JPS5436268A (en) 1979-03-16
NL182805C (nl) 1988-05-16
PH13874A (en) 1980-10-24
IE45642B1 (en) 1982-10-20
ES470744A1 (es) 1979-01-16
FI72721C (fi) 1987-07-10
DE2760220C2 (xx) 1987-08-20
FI831701L (fi) 1983-05-16
CS203921B2 (en) 1981-03-31
DK326186D0 (da) 1986-07-09
FI771934A (xx) 1978-02-03
DK153401B (da) 1988-07-11
DK326086A (da) 1986-07-09
CA1117541A (en) 1982-02-02
FI72722B (fi) 1987-03-31
NL182476C (nl) 1988-03-16
FI831703L (fi) 1983-05-16
DE2728499C2 (de) 1986-04-03
MY8100287A (en) 1981-12-31
ATA124480A (de) 1981-01-15
FI73424B (fi) 1987-06-30
IE45645B1 (en) 1982-10-20
CS203922B2 (en) 1981-03-31
JPS5729034B2 (xx) 1982-06-19
BE855965A (fr) 1977-12-21
PL115497B1 (en) 1981-04-30
NO150042C (no) 1984-08-15
PT66694B (en) 1978-11-17
MY8100267A (en) 1981-12-31
JPS5436269A (en) 1979-03-16
CH625235A5 (en) 1981-09-15
YU270382A (en) 1983-10-31
SE7707035L (sv) 1978-02-03
CH626358A5 (en) 1981-11-13
FI72720B (fi) 1987-03-31
CA1095921A (en) 1981-02-17
AU2601777A (en) 1978-09-21
GB1538372A (en) 1979-01-17
FI831700L (fi) 1983-05-16
NL182477C (nl) 1988-03-16
SE8200518L (sv) 1982-01-29
FI831700A0 (fi) 1983-05-16
YU274782A (en) 1983-12-31
FI72723C (fi) 1987-07-10
YU146977A (en) 1983-06-30
ES470745A1 (es) 1979-01-16
SU1015826A3 (ru) 1983-04-30
JPS5420500B2 (xx) 1979-07-23
DK276177A (da) 1978-02-03
AT362790B (de) 1981-06-10
GB1538371A (en) 1979-01-17
GB1538375A (en) 1979-01-17
NO834236L (no) 1978-02-03
NO151365C (no) 1985-03-27

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Legal Events

Date Code Title Description
NR Patent deemed never to have been added to the register under section 13(7) of patents (transitional arrangements) rules