JPS5446784A - Production of 3-hydroxy-4-pyrone analog - Google Patents

Production of 3-hydroxy-4-pyrone analog

Info

Publication number
JPS5446784A
JPS5446784A JP11129577A JP11129577A JPS5446784A JP S5446784 A JPS5446784 A JP S5446784A JP 11129577 A JP11129577 A JP 11129577A JP 11129577 A JP11129577 A JP 11129577A JP S5446784 A JPS5446784 A JP S5446784A
Authority
JP
Japan
Prior art keywords
hydroxy
pyrone
dihydro
production
pyrone analog
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.)
Pending
Application number
JP11129577A
Other languages
Japanese (ja)
Inventor
Akira Yamamoto
Akira Hayashida
Kenichi Taguchi
Toshinobu Ishihara
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.)
Shin Etsu Chemical Co Ltd
Original Assignee
Shin Etsu Chemical Co 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
Application filed by Shin Etsu Chemical Co Ltd filed Critical Shin Etsu Chemical Co Ltd
Priority to JP11129577A priority Critical patent/JPS5446784A/en
Publication of JPS5446784A publication Critical patent/JPS5446784A/en
Pending legal-status Critical Current

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  • Pyrane Compounds (AREA)

Abstract

PURPOSE: A 5,6-dihydro-5-pyrone derivative is subjected to halogenation and successive hydrolysis to form readily titled compound used as intensifier for flavor of food products and livestock feed.
CONSTITUTION: 5,6-Dihydro-5-pyrone derivatives are reacted with a halogen such as chlorine in a basic medium such as sodium hydrozide in methanol to form halides, which are hydrolyzed by mixing with water containing or not containing an acid or alkali catalyst to produced 3-hydroxy-4-pyrone derivatives. In an example, the yield of 2-methyl-3-hydroxy-4-pyrone (maltol) is 83%.
COPYRIGHT: (C)1979,JPO&Japio
JP11129577A 1977-09-16 1977-09-16 Production of 3-hydroxy-4-pyrone analog Pending JPS5446784A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11129577A JPS5446784A (en) 1977-09-16 1977-09-16 Production of 3-hydroxy-4-pyrone analog

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11129577A JPS5446784A (en) 1977-09-16 1977-09-16 Production of 3-hydroxy-4-pyrone analog

Publications (1)

Publication Number Publication Date
JPS5446784A true JPS5446784A (en) 1979-04-12

Family

ID=14557587

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11129577A Pending JPS5446784A (en) 1977-09-16 1977-09-16 Production of 3-hydroxy-4-pyrone analog

Country Status (1)

Country Link
JP (1) JPS5446784A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100401783B1 (en) * 1995-12-12 2004-01-28 주식회사 두산콘프로덕츠코리아 Method for manufacturing maltol as flavor increasing agent

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100401783B1 (en) * 1995-12-12 2004-01-28 주식회사 두산콘프로덕츠코리아 Method for manufacturing maltol as flavor increasing agent

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