JPS57149284A - Preparation of 3-hydroxy-4h-pyran-4-one - Google Patents
Preparation of 3-hydroxy-4h-pyran-4-oneInfo
- Publication number
- JPS57149284A JPS57149284A JP3440881A JP3440881A JPS57149284A JP S57149284 A JPS57149284 A JP S57149284A JP 3440881 A JP3440881 A JP 3440881A JP 3440881 A JP3440881 A JP 3440881A JP S57149284 A JPS57149284 A JP S57149284A
- Authority
- JP
- Japan
- Prior art keywords
- compound
- ester
- hypohalogenous
- purity
- stage
- 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.)
- Granted
Links
Landscapes
- Pyrane Compounds (AREA)
Abstract
PURPOSE: To obtain the titled compound useful as a flavor or savor enhancer for a food, drink, etc. in high yield and purity from raw materials in one stage, by reacting a furylcarbinol compound with a specific amount of a hypohalogenous ester in the presence of an aqueous solvent.
CONSTITUTION: One mole compound of formulaI(R is H, 1W6C alkyl, phenyl or benzyl) is reacted with at least 2mol, preferably 2W3mol, hypohalogenous ester, preferably hypochlorous ester particularly tert-butylhypochlorite, in the presence of an aqueous solvent to give a compound of formula II. According to the method, the compound of formula II useful as a component in a food flavor is obtained economically and in high yield and purity in one stage from easily available raw materials without isolating and purifying the intermediate. The reaction temperature is preferably changed stepwise.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3440881A JPS57149284A (en) | 1981-03-10 | 1981-03-10 | Preparation of 3-hydroxy-4h-pyran-4-one |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3440881A JPS57149284A (en) | 1981-03-10 | 1981-03-10 | Preparation of 3-hydroxy-4h-pyran-4-one |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57149284A true JPS57149284A (en) | 1982-09-14 |
| JPS6148837B2 JPS6148837B2 (en) | 1986-10-25 |
Family
ID=12413356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3440881A Granted JPS57149284A (en) | 1981-03-10 | 1981-03-10 | Preparation of 3-hydroxy-4h-pyran-4-one |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57149284A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102391229A (en) * | 2011-09-07 | 2012-03-28 | 安徽金禾实业股份有限公司 | Ethyl maltol chlorination continuous production method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2984686A (en) * | 1960-12-19 | 1961-05-16 | Pfizer & Co C | 6-deoxy-6-demethyl-6-methylene-5-oxytetracyclines |
| JPS5420500A (en) * | 1977-07-18 | 1979-02-15 | Sumikama Hamono Seisakushiyo G | Method of and device for assemblying pocket knife |
-
1981
- 1981-03-10 JP JP3440881A patent/JPS57149284A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2984686A (en) * | 1960-12-19 | 1961-05-16 | Pfizer & Co C | 6-deoxy-6-demethyl-6-methylene-5-oxytetracyclines |
| JPS5420500A (en) * | 1977-07-18 | 1979-02-15 | Sumikama Hamono Seisakushiyo G | Method of and device for assemblying pocket knife |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102391229A (en) * | 2011-09-07 | 2012-03-28 | 安徽金禾实业股份有限公司 | Ethyl maltol chlorination continuous production method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6148837B2 (en) | 1986-10-25 |
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