双功能介观笼状金属有机骨架：高效路易斯碱和路易斯酸催化剂。
Bifunctional Gyroidal MOFs: Highly Efficient Lewis Base and Lewis Acid Catalysts.
机构信息
College of Chemistry and Materials Science, Jinan University, Guangzhou, 510632, P. R. China.
Department of Chemistry, Shantou University, Guangdong, 515063, P. R. China.
出版信息
Chem Asian J. 2019 Oct 15;14(20):3682-3687. doi: 10.1002/asia.201900853. Epub 2019 Jul 30.
A family of gyroidal metal-organic frameworks (STUs) composited with transition metal ions and bi-imidazolate ligands (BIm) were prepared and applied as both Lewis base and acid catalysts. Benefiting from the intrinsic basicity of the ligands and the Lewis acidic sites of the open metal centres, the STUs materials show excellent catalytic activities as Lewis base for the Knoevenagel condensation reaction between various aldehydes and malononitrile, and as Lewis acid for cyanosilylation reactions. Among these STUs, STU-4 (Ni(BIm)) shows the best catalytic efficiency (conversions >99 %) in both Knoevenagel condensation and cyanosilylation reactions under mild conditions, providing thus an advanced material for both Lewis base and Lewis acid catalysis.
一种由过渡金属离子和双咪唑配体（BIm）组成的介晶金属有机骨架（STU）被制备出来，并作为路易斯碱和酸催化剂应用。得益于配体的固有碱性和开放金属中心的路易斯酸性位，STU 材料在路易斯碱催化方面表现出优异的活性，可用于各种醛和丙二腈之间的 Knoevenagel 缩合反应，同时在路易斯酸催化方面也表现出优异的活性，可用于氰硅烷化反应。在这些 STU 中，STU-4（Ni（BIm））在温和条件下的 Knoevenagel 缩合和氰硅烷化反应中表现出最佳的催化效率（转化率>99%），因此为路易斯碱和路易斯酸催化提供了一种先进的材料。
Zotero 插件