Recyclable chiral metathesis catalysts
    8.
    发明授权
    Recyclable chiral metathesis catalysts 失效
    可回收手性复分解催化剂

    公开(公告)号:US06939982B2

    公开(公告)日:2005-09-06

    申请号:US10435777

    申请日:2003-05-12

    摘要: The present invention relates to chiral metal catalysts for stereoselective olefin metathesis reactions, which are recyclable and reusable in such metathesis reactions. The chiral metal-based metathesis catalysts of the invention comprise multidentate optically active or racemic chiral ligands that enable their use in asymmetric synthetic processes, such as for example, in ring-opening and ring-closing metathesis reactions (ROM and RCM, respectively) of alkenes. The catalysts of the invention are organometallic complexes of multivalent metals comprising one or more chiral bidentate ligands that exhibit superior reactivity and stereoselectivity properties. The present invention also provides methods of making such catalysts and methods for utilizing them in catalyzing stereoselective olefin metathesis reactions to provide asymmetric products in relatively high enantiomeric or stereoisomeric excess.

    摘要翻译: 本发明涉及用于立体选择性烯烃复分解反应的手性金属催化剂,其在这种复分解反应中是可回收利用和可重复使用的。 本发明的手性基于金属的复分解催化剂包括多齿光学活性或外消旋手性配体,使其能够用于不对称合成过程,例如开环和闭环复分解反应(分别为ROM和RCM) 烯烃 本发明的催化剂是包含一种或多种手性二齿配位体的多价金属的有机金属络合物,其表现出优异的反应性和立体选择性。 本发明还提供了制备这种催化剂的方法和用于催化立体选择性烯烃复分解反应以提供具有相对高的对映异构体或立体异构体过量的不对称产物的方法。