| 发明名称 |
VERFAHREN ZUR HERSTELLUNG VON PYRAZOLO (5,1-B) CHINAZOLONEN. |
| 摘要 |
Prodn. of pyrazolo(5,1-b) quinazolones (I) involves reacting isatic anhydride cpds. (II), R1-3 independently=H, F, Cl or Br; with 3-methylpyrazole-5-one (III) at 40-150 deg.C and 1-5 bar in water as reaction medium. Pref. R1=F, Cl or Br in the 5-posn., R2=R3=H. Reaction is carried out in the presence of a wetting agent.
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| 申请公布号 |
DE3878796(D1) |
申请公布日期 |
1993.04.08 |
| 申请号 |
DE19883878796 |
申请日期 |
1988.09.03 |
| 申请人 |
BASF AG, 6700 LUDWIGSHAFEN, DE |
发明人 |
KANTER, DR., HARTMUT, W-6700 LUDWIGSHAFEN, DE;ORT, DR., BURKHARD, W-6706 WACHENHEIM, DE |
| 分类号 |
C07D487/04;(IPC1-7):C07D487/04 |
主分类号 |
C07D487/04 |
| 代理机构 |
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