| 发明名称 |
Process for the preparation of quinazoline-2,4-diones |
| 摘要 |
Quinazoline-2,4-diones are obtained in high yields and purities by reacting anthranilic acids with isocyanates and then, without isolation of the urea formed as intermediate, treating the reaction mixture with acid.
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| 申请公布号 |
US5977362(A) |
申请公布日期 |
1999.11.02 |
| 申请号 |
US19980084695 |
申请日期 |
1998.05.26 |
| 申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
MUELLER, NIKOLAUS;PAETZ, KLAUS-CHRISTIAN;KIEL, WOLFGANG |
| 分类号 |
C07D239/96;(IPC1-7):C07D239/72 |
主分类号 |
C07D239/96 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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