The invention is directed to ruthenium-based metathesis catalysts of the Grubbs-Hoveyda type. The new 2-aryloxy-substituted ruthenium catalysts described herein reveal rapid initiation behavior. Further, the corresponding styrene-based precursor compounds are disclosed. The catalysts are prepared in a cross-metathesis reaction starting from styrene-based precursors which can be prepared in a cost- effective manner. The new Grubbs-Hoveyda type catalysts are suitable to catalyze ring- closing metathesis (RCM), cross metathesis (CM) and ring- opening metathesis polymerization (ROMP). Low catalyst loadings are necessary to convert a wide range of substrates including more complex and critical substrates via metathesis reactions at low to moderate temperatures in high yields within short reaction times.
该发明涉及格鲁布斯-霍维达类型的基于
钌的转化催化剂。本文描述的新型2-芳氧基取代的
钌催化剂展现出快速启动行为。此外,还披露了相应的基于
苯乙烯的前体化合物。这些催化剂是通过从基于
苯乙烯的前体化合物开始的交叉转化反应制备的,可以以成本有效的方式制备。新型的格鲁布斯-霍维达类型催化剂适用于催化环闭合转化(RCM)、交叉转化(CM)和环开启转化聚合(ROMP)。在低至中等温度下,只需使用较低的催化剂负载即可将广泛范围的底物转化为更复杂和关键底物,从而在短时间内高产率地进行转化反应。