The invention is directed to ruthenium-based metathesis catalysts of the Hoveyda-Grubbs type. The new N-chelating diarylamino-based ruthenium catalysts described herein are stable in solid state and in solution and reveal rapid initiation behavior. Further, the corresponding N-substituted styrene precursor compounds are disclosed. The catalysts are prepared in a cross-metathesis reaction starting from N-substituted styrene precursors. The new Hoveyda-Grubbs type catalysts are suitable to catalyze ring- closing metathesis (RCM), cross metathesis (CM) and ring-opening metathesis polymerization (ROMP). Low catalyst loadings are sufficient to convert a wide range of substrates via metathesis reactions.
该发明涉及霍维达-格鲁布斯类型的基于
钌的重要烯烃交换催化剂。本文描述的新型N-螯合二芳胺基
钌催化剂在固态和溶液中稳定,并显示出快速启动行为。此外,还披露了相应的N-取代
苯乙烯前体化合物。这些催化剂是通过从N-取代
苯乙烯前体出发的交叉烯烃交换反应制备的。新型的霍维达-格鲁布斯类型催化剂适用于催化环闭合烯烃交换(RCM)、交叉烯烃交换(CM)和环开启烯烃聚合(ROMP)。低催化剂负载量足以通过烯烃交换反应转化各种底物。