Department of Chemistry, University of Illinois at Chicago , 845 West Taylor Street, Chicago, Illinois 60607, United States.
J Am Chem Soc. 2013 Nov 20;135(46):17258-61. doi: 10.1021/ja408861p. Epub 2013 Oct 2.
Heterobimetallic Cu-Fe and Zn-Fe complexes catalyze C-H borylation, a transformation that previously required noble metal catalysts. The optimal catalyst, (IPr)Cu-FeCp(CO)2, exhibits efficient activity at 5 mol% loading under photochemical conditions, shows only minimal decrease in activity upon reuse, and is able to catalyze borylation of a variety of arene substrates. Stoichiometric reactivity studies are consistent with a proposed mechanism that exploits metal-metal cooperativity and showcases bimetallic versions of the classical organometallic processes, oxidative addition and reductive elimination.
杂双金属 Cu-Fe 和 Zn-Fe 配合物可催化 C-H 硼化反应，该反应以前需要使用贵金属催化剂。最佳催化剂 (IPr)Cu-FeCp(CO)2 在光化学条件下以 5 mol%的负载量表现出高效活性，重复使用时活性仅略有下降，并且能够催化各种芳基底物的硼化反应。化学计量反应性研究与所提出的机制一致，该机制利用了金属-金属协同作用，并展示了经典的有机金属过程的双金属版本，即氧化加成和还原消除。
