发明名称 |
Process for producing pivaloyl-acetic acid ester |
摘要 |
A process for producing a pivaloylacetic acid ester comprises reacting pivaloyl chloride with an acetoacetic acid ester of an alkyl group having 1 to 4 carbon atoms in the presence of at least one nitrogen-containing basic compound (a) selected from among pyridine compounds, N,N-dialkylanilines and imidazole compounds and from 0.01 to 0.5 mole equivalent, based on the pivaloyl chloride, of a magnesium compound (b) to thereby prepare a pivaloylacetoacetic acid ester and then alcholyzing or alkali-hydrolyzing the pivaloylacetoacetic acid ester to thereby give a pivaloylacetic acid ester having a high purity at a low cost.
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申请公布号 |
US6570035(B2) |
申请公布日期 |
2003.05.27 |
申请号 |
US20010759134 |
申请日期 |
2001.01.16 |
申请人 |
TAKASAGO INTERNATIONAL CORPORATION |
发明人 |
YAMADA SHINYA;OKEDA YOSHIKI;HAGIWARA TOSHIMITSU;TACHIKAWA AKIO;ISHIGURO KOUJI;HARADA SHUNICHI |
分类号 |
B01J31/26;C07B61/00;C07C67/317;C07C67/333;C07C67/343;C07C69/716;(IPC1-7):C07C69/66 |
主分类号 |
B01J31/26 |
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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