| 发明名称 |
Method for preparing 2h-1 benzopyranes |
| 摘要 |
The invention concerns a method for preparing a compound of formula (I) in which R1 to R5, n and Ar are as defined in claim 1, comprising thermal cyclization of a compound of formula (IV). |
| 申请公布号 |
AU6923598(A) |
申请公布日期 |
1998.10.12 |
| 申请号 |
AU19980069235 |
申请日期 |
1998.03.13 |
| 申请人 |
RHODIA CHIMIE |
发明人 |
JEAN-ROGER DESMURS;MICHEL DURY;PHILIPPE KAHN;HAJA RAKOTOARISOA;JANINE COSSY |
| 分类号 |
C07C69/017;C07C69/157;C07C205/37;C07D311/70;C07D417/12 |
主分类号 |
C07C69/017 |
| 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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