| 发明名称 |
METHOD FOR SULFONATING 1,2-BENZISOXAZOLE-3-ACETIC ACID |
| 摘要 |
A method for efficiently preparing 1,2-benzisoxazole-3-methanesulfonic acid, which comprises reacting 1,2-benzisoxazole-3-acetic acid in toluene with chlorosulfonic acid, which may optionally be mixed with an inert solvent, in the presence of a specific Lewis base (ester or nitrile).
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| 申请公布号 |
EP1935888(A1) |
申请公布日期 |
2008.06.25 |
| 申请号 |
EP20060797992 |
申请日期 |
2006.09.14 |
| 申请人 |
DAINIPPON SUMITOMO PHARMA CO., LTD. |
发明人 |
ISHIKURA, TSUTOMU;HORIUCHI, NOBUHIKO |
| 分类号 |
C07D261/20 |
主分类号 |
C07D261/20 |
| 代理机构 |
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