| 发明名称 |
REGIOSELECTIVE SYNTHESIS OF 4-CHLORO-2-THIOPHENECARBOXYLIC ACID |
| 摘要 |
4-Chloro-2-thiophenecarboxylic acid is made by forming a compound of formula (Ia), wherein R3 is (C1-C6) alkyl, phenyl, or benzyl; covering the compounds to a compound of formula (IVa); and removing the silyl group R3Si-. The product is useful as an intermediate in making pharmaceutical products.
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| 申请公布号 |
CA2148616(C) |
申请公布日期 |
1998.02.03 |
| 申请号 |
CA19932148616 |
申请日期 |
1993.09.17 |
| 申请人 |
PFIZER INC. |
发明人 |
BURGESS, LAURENCE E.;SCHULTE, GARY R. |
| 分类号 |
C07D333/40;C07D;C07D333/38;C07D333/42;C07D409/06;C07F7/08;C07F7/12;(IPC1-7):C07F7/08 |
主分类号 |
C07D333/40 |
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