发明名称 |
Process for producing pivaloyl-acetic acid ester |
摘要 |
<p>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.</p> |
申请公布号 |
EP1116710(A1) |
申请公布日期 |
2001.07.18 |
申请号 |
EP20010400074 |
申请日期 |
2001.01.12 |
申请人 |
TAKASAGO INTERNATIONAL CORPORATION |
发明人 |
YAMADA, SHINYA;OKEDA, YOSHIKI;HAGIWARA, TOSHIMITSU;TACHIKAWA, AKIO;ISHIGURO, KOUJI;HARADA, SHUNICHI |
分类号 |
C07C67/333;B01J31/26;C07B61/00;C07C67/317;C07C67/343;C07C69/716;(IPC1-7):C07C67/343 |
主分类号 |
C07C67/333 |
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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