Immobilization of the Grubbs second-generation ruthenium-carbene complex on poly(ethylene glycol): a highly reactive and recyclable catalyst for ring-closing and cross-metathesis
作者:Qingwei Yao、Adalie Rodriguez Motta
DOI:10.1016/j.tetlet.2004.01.036
日期:2004.3
catalyst derived from the Grubbs second-generation Ru carbene complex was synthesized and shown to be highly reactive in the ring-closing metathesis of a wide variety of diene substrates, yielding di-, tri-, and tetra-substituted carbocyclic and heterocyclic olefins. The immobilized catalyst also proved to be highly reactive and recyclable in cross-metathesis and ring-opening/cross-metathesis. In all cases
合成了一种与乙二醇(二乙二醇)结合的Hoveyda-Grubbs Ru催化剂,该催化剂来自Grubbs第二代Ru卡宾络合物,在多种二烯底物的闭环复分解反应中表现出很高的反应性,可生成二,三-和四取代的碳环和杂环烯烃。固定化的催化剂在交叉复分解和开环/交叉复分解中也被证明是高度反应性和可回收的。在所有测试的情况下,催化剂均显示出高水平的可回收性和可重复使用性。