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。