发明名称 |
Method for production of t-butyl- 3-oxobutyrates and their use. |
摘要 |
<p>An advantageous method of industrial production of tert-butyl 3-oxobutylate, which is an useful intermediate for synthesis, characterized by reacting tert-butyl alcohol with diketene in the presence of 4-(tertiary amino) pyridine, and an industrially advantageous method of producing cephalosporin compounds or pharmaceutically acceptable salts thereof, using tert-butyl 3-oxobutylate as an intermediate.</p> |
申请公布号 |
EP0324418(A2) |
申请公布日期 |
1989.07.19 |
申请号 |
EP19890100303 |
申请日期 |
1989.01.10 |
申请人 |
TAKEDA CHEMICAL INDUSTRIES, LTD. |
发明人 |
NAITO, KENZO;ISHIBASHI, YUKIO;SHINBO, HARUO |
分类号 |
B01J31/02;C07B61/00;C07C67/03;C07C67/46;C07C69/24;C07C69/675;C07C69/72;C07D501/04;C07D501/20;C07D501/36 |
主分类号 |
B01J31/02 |
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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