JPS5731632A - Preparation of chloroacetaldehyde - Google Patents
Preparation of chloroacetaldehydeInfo
- Publication number
- JPS5731632A JPS5731632A JP10473080A JP10473080A JPS5731632A JP S5731632 A JPS5731632 A JP S5731632A JP 10473080 A JP10473080 A JP 10473080A JP 10473080 A JP10473080 A JP 10473080A JP S5731632 A JPS5731632 A JP S5731632A
- Authority
- JP
- Japan
- Prior art keywords
- vinyl acetate
- water
- pref
- product
- reaction
- 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
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To prepare the titled compound useful as an intermediate of pharmaceuticals, etc., in high yield and purity, by reacting vinyl acetate with chlorine gas at a specific temperature in the absence of water, and then mixing the resulted monochlorinated product with a specific amount of water and hydrolyzing at a specific temperature.
CONSTITUTION: Vinyl acetate is reacted with chlorine gas at -10W+30°C (pref. 0W20°C) in the absence of water to obtain monochlorinated product, which is then mixed with 1.3W3pts.wt. (pref. 1.7W2pts.wt.), based on 1pt.wt. of vinyl acetate, of water, and hydrolyzed at 30W60°C (pref. 35W45°C) to obtain the titled compound. The chlorination reaction is carried out by introducing 1.0W1.3 times mole of chlorine into vinyl acetate under stirring (for 5W100hr), and leaving the reaction products at rest for 1W10hr. The hydrolysis is carried out for 5W15hr, and the end point can be determined by the change of the reaction mixture to a clear uniform solution.
EFFECT: Since there is little side reactions, the product can be used without purification to the next reaction.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10473080A JPS5731632A (en) | 1980-07-30 | 1980-07-30 | Preparation of chloroacetaldehyde |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10473080A JPS5731632A (en) | 1980-07-30 | 1980-07-30 | Preparation of chloroacetaldehyde |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5731632A true JPS5731632A (en) | 1982-02-20 |
JPS6260377B2 JPS6260377B2 (en) | 1987-12-16 |
Family
ID=14388608
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10473080A Granted JPS5731632A (en) | 1980-07-30 | 1980-07-30 | Preparation of chloroacetaldehyde |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5731632A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8989561B1 (en) | 2008-05-29 | 2015-03-24 | Rovi Guides, Inc. | Systems and methods for alerting users of the postponed recording of programs |
-
1980
- 1980-07-30 JP JP10473080A patent/JPS5731632A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6260377B2 (en) | 1987-12-16 |
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