Copper-Carbene Intermediates in the Copper-Catalyzed Functionalization of OH Bonds
作者:Ana Pereira、Yohan Champouret、Carmen Martín、Eleuterio Álvarez、Michel Etienne、Tomás R. Belderraín、Pedro J. Pérez
DOI:10.1002/chem.201500776
日期:2015.6.26
Copper–carbene [TpxCuC(Ph)(CO2Et)] and copper–diazo adducts [TpxCuη1‐N2C(Ph)(CO2Et)}] have been detected and characterized in the context of the catalytic functionalization of OHbonds through carbeneinsertion by using N2C(Ph)(CO2Et) as the carbene source. These are the first examples of these type of complexes in which the copper center bears a tridentate ligand and displays a tetrahedral geometry
铜-卡宾[TP X CuC(PH)(CO 2 ET)]和铜-重氮加合物[TP X的Cu η 1 -N 2 C(PH)(CO 2 ET)}]已经检测到并且其特征的O-催化官能化的上下文中通过卡宾插入H键通过使用N- 2 C(PH)(CO 2等等)作为卡宾源。这些是这类配合物的第一个例子,其中铜中心带有一个三齿配体并显示出四面体的几何形状。这些配合物在催化循环中的相关性已通过NMR光谱法进行了评估,动力学研究表明N键合的重氮加合物是一种休眠物质,并不在形成铜-卡宾中间体的途中。
Ru/PNNP-Catalyzed Asymmetric Imine Aziridination by Diazo Ester Activation