| 发明名称 |
METHOD FOR PRODUCING SUBSTITUTED PYRAZOLES |
| 摘要 |
Pyrazole derivatives are prepared by reacting carbonyl compounds R1-C(O)-CH(R2)-CH2R3 with hydrazine, its hydrate or its salts in 30 to 100% by weight sulfuric acid in the presence of catalytic amounts of iodine or of an iodine compound. |
| 申请公布号 |
HU225018(B1) |
申请公布日期 |
2006.05.29 |
| 申请号 |
HU20000002748 |
申请日期 |
1998.06.22 |
| 申请人 |
BASF AG |
发明人 |
MERKLE, HANS RUPERT DR;FRETSCHNER, ERICH |
| 分类号 |
C07D231/12;C07D;C07D231/10 |
主分类号 |
C07D231/12 |
| 代理机构 |
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