| 发明名称 |
Process for the preparation of o-carboethoxybenzenesulfonamide |
| 摘要 |
Saccharin is reacted with ethanol and concentrated sulfuric acid. Sodium acetate is used to remove saccharin from the crude material so that highly pure o-carboethoxybenzene sulfonamide is recovered.
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| 申请公布号 |
US4571429(A) |
申请公布日期 |
1986.02.18 |
| 申请号 |
US19850730155 |
申请日期 |
1985.05.03 |
| 申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
CHIANG, GEORGE C. |
| 分类号 |
C07C311/16;C07C67/00;C07C301/00;C07C303/40;C07C311/15;C07D275/06;(IPC1-7):C07C143/67 |
主分类号 |
C07C311/16 |
| 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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