JPS5531072A - Preparation of 2-pyridone compound - Google Patents
Preparation of 2-pyridone compoundInfo
- Publication number
- JPS5531072A JPS5531072A JP9694579A JP9694579A JPS5531072A JP S5531072 A JPS5531072 A JP S5531072A JP 9694579 A JP9694579 A JP 9694579A JP 9694579 A JP9694579 A JP 9694579A JP S5531072 A JPS5531072 A JP S5531072A
- Authority
- JP
- Japan
- Prior art keywords
- compound
- formula
- preparation
- triphenylphosphine
- reacting
- 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 substance useful as antiphlogistics, pesticides or their intermediates, in one step, by reacting a triphenylphosphine-π-cyclopentadienylcobaltacyclopentadine derivative with an isocyanate compound.
CONSTITUTION: A compound of formula I (R2, R3, R4, and R5 are H, alkyl, aryl, or alkoxycarbonyl groups, Ph is phenyl group) is reacted with a compound of the formula R1-N=C=O (R1 is H, alkyl, or aryl group) at about 130°C for 1W 2hr to give a compound of formula II. The compound of formula I can be obtained by reacting π-cyclopentadienyl-bis(triphenylphosphine)cobalt with an acetylenic compound.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9694579A JPS5531072A (en) | 1979-07-30 | 1979-07-30 | Preparation of 2-pyridone compound |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9694579A JPS5531072A (en) | 1979-07-30 | 1979-07-30 | Preparation of 2-pyridone compound |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12357576A Division JPS5350179A (en) | 1976-10-15 | 1976-10-15 | Novel 2-pyridone compounds and their preparation |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5531072A true JPS5531072A (en) | 1980-03-05 |
JPS5755715B2 JPS5755715B2 (en) | 1982-11-25 |
Family
ID=14178441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9694579A Granted JPS5531072A (en) | 1979-07-30 | 1979-07-30 | Preparation of 2-pyridone compound |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5531072A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6949571B2 (en) * | 2000-06-12 | 2005-09-27 | Eisai Co., Ltd. | 1,2-dihydropyridine compounds, process for preparation of the same and use thereof |
US7759367B2 (en) | 2001-12-06 | 2010-07-20 | Eisai R&D Management Co., Ltd. | Pharmaceutical compositions and their uses |
US8304548B2 (en) | 2004-07-06 | 2012-11-06 | Eisai R&D Management Co., Ltd. | Method for producing 1, 2-dihydropyridine-2-one compound |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49100073A (en) * | 1973-02-02 | 1974-09-20 |
-
1979
- 1979-07-30 JP JP9694579A patent/JPS5531072A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49100073A (en) * | 1973-02-02 | 1974-09-20 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6949571B2 (en) * | 2000-06-12 | 2005-09-27 | Eisai Co., Ltd. | 1,2-dihydropyridine compounds, process for preparation of the same and use thereof |
US7563811B2 (en) | 2000-06-12 | 2009-07-21 | Eisai R&D Management Co., Ltd. | 1,2-dihydropyridine compounds, manufacturing method thereof and use thereof |
US7939549B2 (en) | 2000-06-12 | 2011-05-10 | Eisai R&D Management Co., Ltd. | 1,2-dihydropyridine compounds, manufacturing method thereof and use thereof |
US7759367B2 (en) | 2001-12-06 | 2010-07-20 | Eisai R&D Management Co., Ltd. | Pharmaceutical compositions and their uses |
US8304548B2 (en) | 2004-07-06 | 2012-11-06 | Eisai R&D Management Co., Ltd. | Method for producing 1, 2-dihydropyridine-2-one compound |
US8772497B2 (en) | 2004-07-06 | 2014-07-08 | Eisai R&D Management Co., Ltd. | Method for producing 1, 2-dihydropyridine-2-one compound |
US9045426B2 (en) | 2004-07-06 | 2015-06-02 | Eisai R&D Management Co., Ltd. | Method for producing 1,2-dihydropyridine-2-one compound |
Also Published As
Publication number | Publication date |
---|---|
JPS5755715B2 (en) | 1982-11-25 |
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