JPS5463084A - Preparation of malonic acid derivative - Google Patents
Preparation of malonic acid derivativeInfo
- Publication number
- JPS5463084A JPS5463084A JP12944377A JP12944377A JPS5463084A JP S5463084 A JPS5463084 A JP S5463084A JP 12944377 A JP12944377 A JP 12944377A JP 12944377 A JP12944377 A JP 12944377A JP S5463084 A JPS5463084 A JP S5463084A
- Authority
- JP
- Japan
- Prior art keywords
- compound
- diaza
- undecene
- bicyclo
- mole
- 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
- Heterocyclic Compounds Containing Sulfur Atoms (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
PURPOSE: To prepare the title compound useful as an agricultural fungicide and phamaceutical economically, by halogenating an ylidenemalonate compound, followed by eliminating hydrogen halide from the product in the presence of a small amount of 8-diaza-bicyclo(5,4,0)undecene-7.
CONSTITUTION: The compound II is prepared by (1) reacting dialkyl-4-hydooxy- 1,3-dithiolan-2-ylidene malonate of formula I (R, R' is 1-4C alkyl with a halogenating agent such as thionyl chloride, phosphorus pentachloride, etc., in an inert solvent such as toluene, xylene, etc., and (2) heating the oily product thus obtained at 95-170°C (pref. 110-150°C) in the presence of 0.01-0.5 mole (based on 1 mole of the compound I) of 8-diaza-bicyclo(5,4,0)undecene-7 thereby eliminating hydrogen halide from the oily product.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12944377A JPS5463084A (en) | 1977-10-28 | 1977-10-28 | Preparation of malonic acid derivative |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12944377A JPS5463084A (en) | 1977-10-28 | 1977-10-28 | Preparation of malonic acid derivative |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5463084A true JPS5463084A (en) | 1979-05-21 |
JPS5426546B2 JPS5426546B2 (en) | 1979-09-04 |
Family
ID=15009584
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12944377A Granted JPS5463084A (en) | 1977-10-28 | 1977-10-28 | Preparation of malonic acid derivative |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5463084A (en) |
-
1977
- 1977-10-28 JP JP12944377A patent/JPS5463084A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5426546B2 (en) | 1979-09-04 |
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