发明名称 |
Process for preparing esters of 2-(6'-methoxy-2'-naphtyl)-propionic acid via rearrangement of new ketals of 2-halo-1-(6'-methoxy-2'-naphtyl)-propan-1-one. |
摘要 |
<p>Process for preparing esters of 2-(6 min -methoxy-2 min -naphtyl)-propionic acid via rearrangement of new ketals of 2-halo-1-(6 min -methoxy-2 min -naphtyl)-propan-1-one in the presence of a Lewis acid. The esters thus obtained are useful as intermediate products for preparing Naproxen. The process involves the preparation of the following new compounds: - ketals of 2-halo-1-( min -methoxy-2 min -naphtyl)-propan-1-one - esters of 2-(5 min -bromo-6 min methoxy-2 min -naphtyl)-propionic acid -1-(5 min -bromo-6 min -methoxy-2 min -naphtyl)-propan-1-one -2-halo-(5 min -bromo-6 min -methoxy-2 min -naphtyl)-propan-1-one</p> |
申请公布号 |
EP0035305(A2) |
申请公布日期 |
1981.09.09 |
申请号 |
EP19810200211 |
申请日期 |
1981.02.23 |
申请人 |
BLASCHIM S.P.A. |
发明人 |
GIORDANO, CLAUDIO;BELLI, ALDO;UGGERI, FULVIO;VILLA, GIOVANNI |
分类号 |
C07C43/174;C07C43/225;C07C43/30;C07C43/303;C07C43/315;C07C45/63;C07C51/00;C07C59/64;C07C67/475;C07C69/734;C07D209/48;C07D317/16;C07D317/18;C07D317/22;C07D317/28;C07D319/06;C07D333/16;C07D333/22;(IPC1-7):07C67/475;07C69/734;07C43/225;07D317/18;07D319/06 |
主分类号 |
C07C43/174 |
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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