IT1048924B - Procedimento per la preparazione del 3 idrossil 2 alchil 4 pirone - Google Patents

Procedimento per la preparazione del 3 idrossil 2 alchil 4 pirone

Info

Publication number
IT1048924B
IT1048924B IT24956/72A IT2495672A IT1048924B IT 1048924 B IT1048924 B IT 1048924B IT 24956/72 A IT24956/72 A IT 24956/72A IT 2495672 A IT2495672 A IT 2495672A IT 1048924 B IT1048924 B IT 1048924B
Authority
IT
Italy
Prior art keywords
idrossil
alchil
pirone
procedure
preparation
Prior art date
Application number
IT24956/72A
Other languages
English (en)
Original Assignee
Daicel Ltd
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 JP3598271A external-priority patent/JPS5121991B1/ja
Priority claimed from JP10433271A external-priority patent/JPS515385B2/ja
Application filed by Daicel Ltd filed Critical Daicel Ltd
Application granted granted Critical
Publication of IT1048924B publication Critical patent/IT1048924B/it

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
    • C07D309/34—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

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Seasonings (AREA)
IT24956/72A 1971-05-26 1972-05-26 Procedimento per la preparazione del 3 idrossil 2 alchil 4 pirone IT1048924B (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3598271A JPS5121991B1 (it) 1971-05-26 1971-05-26
JP10433271A JPS515385B2 (it) 1971-12-22 1971-12-22

Publications (1)

Publication Number Publication Date
IT1048924B true IT1048924B (it) 1980-12-20

Family

ID=26374998

Family Applications (1)

Application Number Title Priority Date Filing Date
IT24956/72A IT1048924B (it) 1971-05-26 1972-05-26 Procedimento per la preparazione del 3 idrossil 2 alchil 4 pirone

Country Status (8)

Country Link
US (1) US3832357A (it)
CA (1) CA959853A (it)
CH (1) CH553178A (it)
DE (1) DE2225446A1 (it)
FR (1) FR2139174B1 (it)
GB (1) GB1399491A (it)
IT (1) IT1048924B (it)
NL (1) NL7207201A (it)

Families Citing this family (6)

* 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
US4126624A (en) * 1976-11-12 1978-11-21 Pfizer Inc. Preparation of gamma-pyrones from 3-substituted furans
DK178289A (da) * 1988-04-27 1989-10-28 Givaudan & Cie Sa Fremgangsmaade til fremstilling af gamma-pyroner
CN104387355B (zh) * 2014-09-27 2016-06-08 安徽金禾实业股份有限公司 一种乙基麦芽酚结晶母液回收方法
CN108299362B (zh) * 2018-01-13 2021-07-09 安徽金禾实业股份有限公司 一种分离麦芽酚粗品中杂质的方法
CN112574156A (zh) * 2020-12-11 2021-03-30 安徽金禾实业股份有限公司 一种乙基麦芽酚升华后粗品反萃取提纯方法

Also Published As

Publication number Publication date
DE2225446A1 (de) 1972-12-07
FR2139174B1 (it) 1977-12-23
FR2139174A1 (it) 1973-01-05
CA959853A (en) 1974-12-24
GB1399491A (en) 1975-07-02
NL7207201A (it) 1972-11-28
CH553178A (fr) 1974-08-30
US3832357A (en) 1974-08-27

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