A water-soluble dinuclear Cp*Ir complex bearing 4,4′,6,6′-tetrahydroxy-2,2′-bipyrimidine as a bridging ligand was found to be a highly effective catalyst for the α-alkylation of ketones with alcohols in pure water. In the presence of catalyst (0.5 mol%), a series of desirable products were obtained with high reaction economy under environmentally benign conditions. The importance of the hydroxy group
                                    发现
水溶性双核Cp * Ir配合物带有4,4',6,6'-四羟基-2,2'-联
嘧啶作为桥联
配体,是酮与醇中α-烷基化的高效催化剂。纯净
水。在催化剂(0.5mol%)的存在下,在环境友好的条件下以高反应经济性获得了一系列期望的产物。机理实验证实了
配体中羟基对于催化氢转移的重要性。此外,已经完成了该催化体系在纯
水中合成
生物活性分子
多奈哌齐的应用。值得注意的是,这项研究将促进
水溶性
金属-
配体双功能催化剂在
水中催化CC键形成反应的进展。