Transition metal oxo, sulfido and amido complexes as catalysts of nucleophilic addition reactions
申请人:——
公开号:US20030105306A1
公开(公告)日:2003-06-05
Methods are provided for carrying out nucleophilic addition reactions using oxo, sulfido or amido complexes of transition metals as reaction catalysts. Exemplary catalysts are oxo complexes of Group 7 transition metals, with rhenium (V) oxo complexes, including dioxo complexes, preferred. Nucleophilic addition reactions that can be catalyzed using the present methods include silylation, hydrosilylation, hydroamination, silylmetalation, carbometalation, aldol reactions, hydro- and carbometalation initiated cyclization/polymerization, and epoxide/aziridine opening. The invention also pertains to novel transition metal complexes that have utility in catalyzing such reactions.
提供了使用过渡金属的氧、硫或氨基络合物作为反应催化剂进行亲核加成反应的方法。示例催化剂是第7族过渡金属的氧络合物,其中以钨(V)氧络合物,包括双氧络合物为首选。可以使用当前方法催化的亲核加成反应包括硅烷化、氢硅化、氢胺化、硅基金属化、碳基金属化、醛醇反应、以氢和碳基金属化引发的环化/聚合反应,以及环氧化合物/氮杂环丙烷的开环反应。本发明还涉及在催化这些反应中具有实用性的新型过渡金属络合物。