“Click” post-synthetic modification of metal–organic frameworks with chiral functional adduct for heterogeneous asymmetric catalysis
作者:Wenting Zhu、Cheng He、Pengyan Wu、Xiao Wu、Chunying Duan
DOI:10.1039/c2dt12153k
日期:——
Two enantiomeric Zn-MOFs, having L- or D-proline chiral functionality, were achieved through in situ click reactions by modifying two opposite chiral adducts within the same pre-assembled achiral MOFs, respectively. Both of them exhibited remarkable catalytic activities in the relative asymmetric aldol reactions, and led to the formation of opposite enantiomorphs. The significant advantage of this approach not only includes the conversion of chemically and thermally robust MOFs into enantiomeric chiral material having catalytically active sites, but also involves the potential applications in asymmetric transformations with desirable chiralities of a special enantiomorph.
通过原位点击反应,在相同的预组装非手性 MOF 中分别修饰两种相反的手性加合物,获得了具有 L-或 D-脯氨酸手性官能团的两种对映体 Zn-MOF。它们在相对不对称醛醇反应中都表现出了显著的催化活性,并形成了相反的对映体。这种方法的显著优势不仅包括将化学性质和热稳定性都很好的 MOF 转化为具有催化活性位点的对映体手性材料,还包括在具有特殊对映体理想手性的不对称转化中的潜在应用。