申请人:McQuade D. Tyler
公开号:US20110054170A1
公开(公告)日:2011-03-03
The present invention provides a catalyst complex or ligand, and compositions thereof, for use in a variety of organic reactions having high reactivity and enantioselectivity. The catalyst is a N-heterocyclic carbene having three fused rings with first and second rings being six-membered rings and the third being a five-membered ring. The first ring is fused to the second and has four substituents. The second ring has two nitrogens flanking a carbene atom with one nitrogen bound to a substituent. The carbene atom may optionally be bonded to a metal. The third ring is fused to the second ring and contains two nitrogens. The third ring of the catalyst has a double bond and two substituents on adjacent non-fused carbons. A non-fused nitrogen of the third ring is partially bonded to another substituent. Methods for the synthesis and use of the catalyst embodiments of the present invention are also provided.
本发明提供了一种催化剂复合物或配体,以及用于各种具有高反应性和对映选择性的有机反应的组合物。该催化剂是一种具有三个融合环的N-杂环卡宾,其中第一和第二环为六元环,第三环为五元环。第一环与第二环融合,并具有四个取代基。第二环具有两个氮原子夹着一个卡宾原子,其中一个氮原子与一个取代基结合。卡宾原子可以选择性地与金属结合。第三环与第二环融合,含有两个氮原子。催化剂的第三环具有一个双键,并且相邻的非融合碳上有两个取代基。第三环的非融合氮部分与另一个取代基部分结合。本发明还提供了有关合成和使用本发明催化剂实施例的方法。