La/Ag Heterobimetallic Cooperative Catalysis: A Catalytic Asymmetric Conia-Ene Reaction
作者:Akinobu Matsuzawa、Tomoyuki Mashiko、Naoya Kumagai、Masakatsu Shibasaki
DOI:10.1002/anie.201102114
日期:2011.8.8
A dual catalyst system: The cooperative function of a hard and soft Lewis acid (LaIII and AgI, respectively) in a catalyst system that includes an amide‐based ligand 1 is crucial for simultaneous activation of intramolecular 1,3‐dicarbonyl and alkyne moieties to afford enantioenriched cyclopentane derivatives (see scheme).
双重催化剂体系:硬和软路易斯酸(分别为La III和Ag I)在包含酰胺基配体1的催化剂体系中的协同功能对于分子内1,3-二羰基和炔烃的同时活化至关重要提供对映体富集的环戊烷衍生物的部分(参见方案)。