Tandem reduction and host-guest complexation
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United States of America Patent
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Dec 26, 2000
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N/A
app pub date -
Aug 6, 1999
filing date -
Aug 6, 1999
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Expired
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Abstract
The present invention relates to a tandem process of reduction and host-guest complexation using metal-hydride complexes to reduce chemical entities bearing carbonyl groups or their equivalents, and host-guest complexation to achieve improved optical resolution of the reduction product. In the complexation step, the reduction product is optically resolved via inclusion into the crystalline complex where it resides as guest and another complex component acts as host. Additional crystallization stages are performed if further improvements in the enantiomeric excess is desired.
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