发明名称 |
Process for the preparation of (S,S)-cis-2-benzhydryl-3-benzylaminoquinuclidine |
摘要 |
A process for preparing (S,S)-cis-2-benzhydryl-3-benzylaminoquinuclidine. The process includes the steps of contacting a compound containing a mixture of R- and S-isomers and having the formula with an effective amount of a chiral organic acid in the presence of an organic solvent and an effective amount of an organic carboxylic acid for converting the R-isomer into an acid salt of the S isomer, wherein the organic solvent is capable of solubilizing the compound containing the mixture of R- and S-isomers, while precipitating the acid salt and the organic carboxylic acid is different from the chiral organic acid; neutralizing the acid salt with a base to provide an S-isomer-of a chiral ketone of the formula reacting the chiral ketone with an organic amine in the presence of a Lewis acid to provide the corresponding imine and reducing the imine.
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申请公布号 |
US2005085641(A1) |
申请公布日期 |
2005.04.21 |
申请号 |
US20040974447 |
申请日期 |
2004.10.27 |
申请人 |
DSM PHARMACEUTICALS, INC. |
发明人 |
SEEMAYER ROBERT;NUGENT THOMAS C. |
分类号 |
C07D453/02;(IPC1-7):C07D453/04 |
主分类号 |
C07D453/02 |
代理机构 |
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主权项 |
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地址 |
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