A Homochiral Porous Metal−Organic Framework for Highly Enantioselective Heterogeneous Asymmetric Catalysis

作者：Chuan‐De Wu, Aiguo Hu, Lin Zhang, Wenbin Lin · 发表于：Journal of the American Chemical Society · 年份：2005 · DOI：10.1021/ja052431t · 被引用次数：1841 · 研究领域：Metal-Organic Frameworks: Synthesis and Applications、Nanocluster Synthesis and Applications、Magnetism in coordination complexes

A homochiral porous noninterpenetrating metal-organic framework (MOF), 1, was constructed by linking infinite 1D [Cd(mu-Cl)2]n zigzag chains with axially chiral bipyridine bridging ligands containing orthogonal secondary functional groups. The secondary chiral dihydroxy groups accessible via the large open channels in 1 were utilized to generate a heterogeneous asymmetric catalyst for the addition of diethyzinc to aromatic aldehydes to afford chiral secondary alcohols at up to 93% enantiomeric excess (ee). Control experiments with dendritic aromatic aldehydes of different sizes indicate that the heterogeneous asymmetric catalyst derived from 1 is both highly active and enantioselective as a result of the creation of readily accessible, uniform active catalyst sites inside the porous MOF.