SE7910630L - PROCEDURE FOR THE MANUFACTURE OF BETA PYRONS - Google Patents

PROCEDURE FOR THE MANUFACTURE OF BETA PYRONS

Info

Publication number
SE7910630L
SE7910630L SE7910630A SE7910630A SE7910630L SE 7910630 L SE7910630 L SE 7910630L SE 7910630 A SE7910630 A SE 7910630A SE 7910630 A SE7910630 A SE 7910630A SE 7910630 L SE7910630 L SE 7910630L
Authority
SE
Sweden
Prior art keywords
pyrons
beta
procedure
manufacture
compounds
Prior art date
Application number
SE7910630A
Other languages
Swedish (sv)
Other versions
SE433078B (en
Inventor
P D Weeks
R P Allingham
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
Application filed by Pfizer filed Critical Pfizer
Publication of SE7910630L publication Critical patent/SE7910630L/en
Publication of SE433078B publication Critical patent/SE433078B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/26—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
    • C07D307/30—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D307/32—Oxygen atoms
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L27/00—Spices; Flavouring agents or condiments; Artificial sweetening agents; Table salts; Dietetic salt substitutes; Preparation or treatment thereof
    • A23L27/20—Synthetic spices, flavouring agents or condiments
    • A23L27/205—Heterocyclic compounds
    • A23L27/2052—Heterocyclic compounds having oxygen or sulfur as the only hetero atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D307/56—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D307/60—Two oxygen atoms, e.g. succinic anhydride
    • 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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D493/00—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system
    • C07D493/02—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system in which the condensed system contains two hetero rings
    • C07D493/04—Ortho-condensed systems
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
    • C11B9/00—Essential oils; Perfumes
    • C11B9/0069—Heterocyclic compounds
    • C11B9/0073—Heterocyclic compounds containing only O or S as heteroatoms
    • C11B9/008—Heterocyclic compounds containing only O or S as heteroatoms the hetero rings containing six atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Epoxy Compounds (AREA)
  • Saccharide Compounds (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Pyrane Compounds (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Picture Signal Circuits (AREA)
  • Electroluminescent Light Sources (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Pyridine Compounds (AREA)

Abstract

1505029 Electrolytically producing intermediate pyran compounds PFIZER Inc 21 July 1976 [28 Aug 1975] 43608/76 Divided out of 1505028 Heading C7B [Also in Division C2] Compounds of the Formula II are made by subjecting compounds III to electrolysis in the presence of a solvent R1OH, where R1 is C 1-6 alkyl. In Example 3 a compound II, when R1 is CH 3 is made by submitting 2-(α- hydroxypropyl) furon to a constant current of 0À6 amperes in methanol containing conc. H 2 SO 4 .

Claims (1)

PATENTKRAVPATENT REQUIREMENTS 1. P6rfarande fOr framstallning av p-pyroner med formeln van i R beteeknar vOte, lagre alkyl med 1 - 6 kolatomer, lagre alkenyl med 2 - 6 kolatomer, fenyl eller bensyl och R' betecknar alkyl med 1- 6 kolatomer,kannetecknat da r-a v, att en fOrening med formeln van i R och R' bar oisingiven betydfar reagera med en huvudsaklrgen vettesyra med Ottav 4 eller mindre. 18A process for the preparation of p-pyrones of the formula van in R represents hydrogen, lower alkyl having 1 to 6 carbon atoms, lower alkenyl having 2 to 6 carbon atoms, phenyl or benzyl and R 'represents alkyl having 1 to 6 carbon atoms, v, that a compound of the formula van in R and R 'bore the meaningless means to react with a major hydrogen fatty acid having Ottav 4 or less. 18
SE7910630A 1975-08-28 1979-12-21 PROCEDURE FOR PREPARING BETA PYRONS AND INTERMEDIATE PRODUCTS FOR USE IN PREPARATION OF ETHYL MALTOL SE433078B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60845275A 1975-08-28 1975-08-28

Publications (2)

Publication Number Publication Date
SE7910630L true SE7910630L (en) 1979-12-21
SE433078B SE433078B (en) 1984-05-07

Family

ID=24436571

Family Applications (3)

Application Number Title Priority Date Filing Date
SE7607321A SE426592B (en) 1975-08-28 1976-06-24 PROCEDURE FOR MANUFACTURING GAMMA PYRONS
SE7910630A SE433078B (en) 1975-08-28 1979-12-21 PROCEDURE FOR PREPARING BETA PYRONS AND INTERMEDIATE PRODUCTS FOR USE IN PREPARATION OF ETHYL MALTOL
SE7910631A SE432929B (en) 1975-08-28 1979-12-21 PROCEDURE FOR MANUFACTURING GAMMA PYRONS AND INTERMEDIATE PRODUCTS FOR USE IN PREPARATION OF ETHYL MALTOL

Family Applications Before (1)

Application Number Title Priority Date Filing Date
SE7607321A SE426592B (en) 1975-08-28 1976-06-24 PROCEDURE FOR MANUFACTURING GAMMA PYRONS

Family Applications After (1)

Application Number Title Priority Date Filing Date
SE7910631A SE432929B (en) 1975-08-28 1979-12-21 PROCEDURE FOR MANUFACTURING GAMMA PYRONS AND INTERMEDIATE PRODUCTS FOR USE IN PREPARATION OF ETHYL MALTOL

Country Status (36)

Country Link
JP (1) JPS5231077A (en)
AR (2) AR214976A1 (en)
AT (1) AT347455B (en)
BE (1) BE843953A (en)
BG (1) BG27373A3 (en)
BR (1) BR7604541A (en)
CA (1) CA1077501A (en)
CH (1) CH620917A5 (en)
CS (2) CS193557B2 (en)
DD (2) DD131857A5 (en)
DE (1) DE2630837C3 (en)
DK (1) DK148020C (en)
ES (3) ES449938A1 (en)
FI (1) FI71316C (en)
FR (1) FR2322146A1 (en)
GB (2) GB1505028A (en)
GR (1) GR60430B (en)
HK (2) HK29981A (en)
HU (2) HU177367B (en)
IE (1) IE42789B1 (en)
IN (1) IN144978B (en)
IT (1) IT1065604B (en)
LU (1) LU75380A1 (en)
MX (1) MX3627E (en)
MY (2) MY8100265A (en)
NL (2) NL166260C (en)
NO (3) NO145952C (en)
PH (2) PH13217A (en)
PL (3) PL110241B1 (en)
PT (1) PT65357B (en)
RO (1) RO71275B (en)
SE (3) SE426592B (en)
SU (2) SU942596A3 (en)
TR (1) TR19310A (en)
YU (2) YU39355B (en)
ZA (1) ZA763902B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52153967A (en) * 1976-06-15 1977-12-21 Otsuka Chem Co Ltd 5,6-dihydro-2h-pyran-5-one derivatives
CA1095921A (en) * 1976-08-02 1981-02-17 Thomas M. Brennan Preparation of gamma-pyrones

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE225446C (en) *
US3159652A (en) * 1962-06-13 1964-12-01 Pfizer & Co C Preparation of gamma-pyrones
US3476778A (en) * 1966-05-16 1969-11-04 Monsanto Co Gamma-pyrone synthesis
US3491122A (en) * 1966-09-14 1970-01-20 Monsanto Co Synthesis of 4-pyrones
JPS5145565B1 (en) * 1968-10-12 1976-12-04
JPS5212166A (en) * 1975-07-17 1977-01-29 Tatsuya Shono Process for preparation of 4-pyron derivatives

Also Published As

Publication number Publication date
ES461253A1 (en) 1978-08-16
DE2630837B2 (en) 1980-08-21
DK315576A (en) 1976-02-29
PL110369B1 (en) 1980-07-31
NL8004974A (en) 1980-11-28
NO147245B (en) 1982-11-22
SU942596A3 (en) 1982-07-07
CA1077501A (en) 1980-05-13
DE2630837C3 (en) 1981-07-09
ES461252A1 (en) 1978-08-16
FI71316B (en) 1986-09-09
YU160476A (en) 1982-08-31
DD131857A5 (en) 1978-07-26
IT1065604B (en) 1985-03-04
DD127201A5 (en) 1977-09-14
NL7607730A (en) 1977-03-02
FR2322146A1 (en) 1977-03-25
MX3627E (en) 1981-04-03
PT65357A (en) 1976-07-31
ES449938A1 (en) 1978-03-16
NO145952B (en) 1982-03-22
GB1505028A (en) 1978-03-22
AR215618A1 (en) 1979-10-31
SE7910631L (en) 1979-12-21
SU1169540A3 (en) 1985-07-23
NO146572B (en) 1982-07-19
ZA763902B (en) 1977-05-25
HK29981A (en) 1981-07-10
PH14410A (en) 1981-06-25
NO146572C (en) 1982-10-27
MY8100273A (en) 1981-12-31
IE42789L (en) 1977-02-28
SE426592B (en) 1983-01-31
SE7607321L (en) 1977-03-01
PL110241B1 (en) 1980-07-31
PL104612B1 (en) 1979-08-31
YU103182A (en) 1982-08-31
SE432929B (en) 1984-04-30
SE433078B (en) 1984-05-07
HK30081A (en) 1981-07-10
IE42789B1 (en) 1980-10-22
NO803831L (en) 1977-03-01
RO71275A (en) 1984-03-15
AT347455B (en) 1978-12-27
GR60430B (en) 1978-05-26
AR214976A1 (en) 1979-08-31
FI762039A (en) 1977-03-01
IN144978B (en) 1978-08-05
CS193557B2 (en) 1979-10-31
JPS5231077A (en) 1977-03-09
TR19310A (en) 1978-11-28
PT65357B (en) 1978-01-09
NO803832L (en) 1977-03-01
BG27373A3 (en) 1979-10-12
NO147245C (en) 1983-03-02
NL166260C (en) 1981-07-15
ATA517276A (en) 1978-05-15
NO145952C (en) 1982-06-30
MY8100265A (en) 1981-12-31
GB1505029A (en) 1978-03-22
NO762449L (en) 1977-03-01
HU177367B (en) 1981-09-28
CH620917A5 (en) 1980-12-31
DK148020B (en) 1985-02-04
FR2322146B1 (en) 1978-10-20
RO71275B (en) 1984-03-31
YU39355B (en) 1984-10-31
NL166260B (en) 1981-02-16
HU187762B (en) 1986-02-28
AU1578376A (en) 1978-01-12
YU39577B (en) 1984-12-31
FI71316C (en) 1986-12-19
BE843953A (en) 1977-01-10
DE2630837A1 (en) 1977-03-03
CS193595B2 (en) 1979-10-31
BR7604541A (en) 1977-08-02
PH13217A (en) 1980-02-07
LU75380A1 (en) 1977-04-04
DK148020C (en) 1985-10-07

Similar Documents

Publication Publication Date Title
KR830010104A (en) Method for preparing an arylphenyl ether derivative
BR8004759A (en) PERFECTING IN A SUBSTANTIALLY SOLVENT-FREE PROCESS FOR ETHANOL PRODUCTION AND CATALYST FOR ETHANOL PRODUCTION
KR840004756A (en) Method of manufacturing antipsychotic
KR830005092A (en) New derivatives of cyclopropane carboxylic acid
GB1156489A (en) Alcoholic Flavouring Agents
KR830010039A (en) Method for preparing phenyl fatty carboxylic acid derivative
SE7910630L (en) PROCEDURE FOR THE MANUFACTURE OF BETA PYRONS
ATE69T1 (en) PROCESS FOR THE PREPARATION OF STEREOISOMERS N-ARALKYL-2,6-DIMETHYLMORPHOLINES.
KR850007604A (en) Method for preparing a chartleucine derivative or salt thereof
KR880011103A (en) Method for preparing 5-amino-4,6-dihalogenopyridine
IE38812B1 (en) Method for purifying crude phosphoric acid
ES420855A1 (en) Process for preparing a cyclopentenone
ES478886A1 (en) Process for the isomerization of 3-vinyl-piperidine derivatives.
KR830007592A (en) Pharmacologically active 4- [2-hydroxy-4- (substituted) phenyl] naphthalene-2 (1H) -one and 2-ols, their derivatives and methods of preparing these intermediates
KR860007241A (en) Process for preparing 2-oxa-or-aza-pregnan compound
DE3483192D1 (en) METHOD FOR PRODUCING OXABICYCLOALKAN COMPOUNDS.
GB1366665A (en) Tricyclic compounds and a process for the preparation thereof
KR850001742A (en) Process for preparing cumalic acid ester
ES440282A1 (en) Diphenyl-butylpiperidines
GB1511682A (en) 9-dihydroniddamycin a compounds and related 3-(o)-esters and a process for their preparation
DE3767127D1 (en) METHOD FOR PRODUCING HALOGEN ALCOHOLS.
KR890005099A (en) Crystalline antibiotic intermediates
KR860002512A (en) Method for preparing cephalosporin intermediate
GB1420057A (en) Esters of pyrazine-tetracarboxylic acid and their preparation
ES486377A1 (en) Process for the preparation of 5-mercapto-1,2,3-triazoles

Legal Events

Date Code Title Description
NAL Patent in force

Ref document number: 7910630-8

Format of ref document f/p: F