发明名称 |
PROCESS FOR PRODUCING 2-ACYLTHIOPHENE COMPOUND |
摘要 |
<p>The present invention provides a process for producing a 2-acylthiophene compound which has a low content of the 3-isomer generated as a by-product, the process comprising reacting a thiophene compound represented by formula (1) :
wherein R 1 is a hydrogen atom, a C 1-6 alkyl group, a phenyl group, or a halogen atom, with at least one member selected from the group consisting of acid anhydrides represented by formula (2):
wherein R 2 is a C 1-6 alkyl group or a phenyl group, and
acid halides represented by formula (3):
wherein R 2 is as defined above and X is a halogen atom,
in the presence of a solid acid catalyst at a temperature less than 75°C in the absence of solvent, thus producing a 2-acylthiophene compound represented by formula (4):
wherein R 1 and R 2 are as defined above.</p> |
申请公布号 |
EP1695972(A1) |
申请公布日期 |
2006.08.30 |
申请号 |
EP20040806930 |
申请日期 |
2004.12.13 |
申请人 |
SUMITOMO SEIKA CHEMICALS CO., LTD. |
发明人 |
BANDO, SEIJI,;SATAKE, SYUZO,;KAGANO, HIROKAZU, |
分类号 |
C07D333/22;A61K31/381;C07B61/00 |
主分类号 |
C07D333/22 |
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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