JPS5528941A - Preparation of pinacolone - Google Patents
Preparation of pinacoloneInfo
- Publication number
- JPS5528941A JPS5528941A JP10198578A JP10198578A JPS5528941A JP S5528941 A JPS5528941 A JP S5528941A JP 10198578 A JP10198578 A JP 10198578A JP 10198578 A JP10198578 A JP 10198578A JP S5528941 A JPS5528941 A JP S5528941A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- hso
- compound
- title compound
- inorganic strong
- 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
Abstract
PURPOSE: To obtain the title compound, an intermediate for the synthesis of pesticides, readly and safely without forming by-products, by heating a specific compound, prepared through reaction between 2-methylbutene-2 and formaldehyde easily, in an aqueous inorganic strong acid.
CONSTITUTION: A compound of the formula (W and Y are H; X and Z are OH, Cl, Br, HSO4, H2PO4, etc.; or either of W and Y is H, and the other forms a single bond with X; Z is OH, Cl, Br, HSO4, H2PO4, etc.) is heated in an aqueous inorganic strong acid, e.g. hydrochloric, hydrobromic, or sulfuric acid, preferably at 40W200°C, more preferably at 60W150°C, to give the title compound. The acid concentration in the aqueous phase is ≥ 2.0moles/kg, preferably ≥ 2.5moles/kg, and the amount of the acid is 0.1 mole or more, preferably 0.5mole or more per mole of the raw material.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10198578A JPS5528941A (en) | 1978-08-21 | 1978-08-21 | Preparation of pinacolone |
DE19792918521 DE2918521C3 (en) | 1978-05-15 | 1979-05-08 | Process for the production of pinacolone |
NL7903751A NL185562C (en) | 1978-05-15 | 1979-05-12 | PROCESS FOR PREPARING PINACOLON. |
US06/039,300 US4224252A (en) | 1978-05-15 | 1979-05-15 | Production of pinacolone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10198578A JPS5528941A (en) | 1978-08-21 | 1978-08-21 | Preparation of pinacolone |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5528941A true JPS5528941A (en) | 1980-02-29 |
JPS6116254B2 JPS6116254B2 (en) | 1986-04-28 |
Family
ID=14315129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10198578A Granted JPS5528941A (en) | 1978-05-15 | 1978-08-21 | Preparation of pinacolone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5528941A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61274850A (en) * | 1985-05-28 | 1986-12-05 | Hitachi Ltd | Method and device for setting original point of machining in machine tool |
DE3719167C1 (en) * | 1987-06-09 | 1988-11-03 | Klingelnberg Soehne | Numerically controlled PCB processing machine |
-
1978
- 1978-08-21 JP JP10198578A patent/JPS5528941A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6116254B2 (en) | 1986-04-28 |
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