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公开(公告)号:US5693816A
公开(公告)日:1997-12-02
申请号:US586037
申请日:1996-01-16
IPC分类号: C07B41/02 , C07B41/06 , C07B53/00 , C07D215/14 , C07D215/18 , C07D417/06 , C07D495/04 , C07F5/02
CPC分类号: C07D495/04 , C07D215/14 , C07D215/18 , C07F5/027 , Y02P20/55
摘要: The present invention relates to an improved process for the in situ preparation of diisopinocampheylchloroborane which comprises reacting sodium borohydride and boron trichloride with .alpha.-pinene. The diisopinocampheylchloroborane thus obtained may be used, without isolation, to reduce prochiral ketones to their corresponding alcohols in high optical purity.
摘要翻译: 本发明涉及一种二异蒎烷基氯代硼烷的原位制备改进方法,其包括使硼氢化钠和三氯化硼与α-蒎烯反应。 这样得到的二蒎烯yl yl chlor chlor ob or or may。。。。。。。,,,。。。。。。。。。。。。。
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公开(公告)号:US06281391B1
公开(公告)日:2001-08-28
申请号:US09427413
申请日:1999-10-27
申请人: Richard D. Tillyer , Ian W. Davies , Robert D. Larsen , Xin Wang , Paul O'Shea , Anthony On-Ping King , Dalian Zhao , Cheng Y. Chen , Edward J. J. Grabowski
发明人: Richard D. Tillyer , Ian W. Davies , Robert D. Larsen , Xin Wang , Paul O'Shea , Anthony On-Ping King , Dalian Zhao , Cheng Y. Chen , Edward J. J. Grabowski
IPC分类号: C07C31920
CPC分类号: C07C319/20 , C07C323/22
摘要: This invention encompasses a novel process for synthesizing compounds represented by formula A: These compounds are intermediates useful in the preparation of certain agents that are selective COX-2 inhibitors.
摘要翻译: 本发明包括用于合成由式A表示的化合物的新方法:这些化合物是可用于制备选择性COX-2抑制剂的某些试剂的中间体。
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