发明名称 |
Process for preparing pyridine-substituted amino ketal derivatives |
摘要 |
The present invention relates to an efficient process for preparing derivatives of 1-(pyridinyl)-1,1-dialkoxy-2-aminoethane of the formula (I), with which compounds of the formula (I) can be prepared in high purity and yield and in the form of the free base without isolating the acetylpyridine oxime of the formula (XI) which is a critical product from a safety point of view as a solid.
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申请公布号 |
US2004158073(A1) |
申请公布日期 |
2004.08.12 |
申请号 |
US20040764810 |
申请日期 |
2004.01.26 |
申请人 |
AVENTIS PHARMA DEUTSCHLAND GMBH |
发明人 |
FLEMMING HANS-WOLFRAM;KORB GERHARD;MUELLER-LEHAR JUERGEN;WEBER WALTER |
分类号 |
C07D213/51;C07D213/53;(IPC1-7):C0745/02;C07D213/24 |
主分类号 |
C07D213/51 |
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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