Zhao Si-Yu, Chen Zhi-Yan, Wei Na, Liu Lin, Han Zheng-Bo
College of Chemistry , Liaoning University , Shenyang 110036 , P. R. China.
Institute of Catalysis for Energy and Environment, College of Chemistry and Chemical Engineering , Shenyang Normal University , Shenyang 110034 , P. R. China.
Inorg Chem. 2019 Jun 17;58(12):7657-7661. doi: 10.1021/acs.inorgchem.9b00816. Epub 2019 May 24.
A unique 3D framework containing three different types of nanoscale polyhedron cages was constructed by incorporating dinuclear [M(μ-OH)(COO)] (M = Co, Ni) secondary building units and pyridyl-carboxylic-acid-supported tetracarboxylates. The assembled complexes possess isolated bifunctional single-site Lewis acid and Brønsted acid and can be used as highly efficient heterogeneous catalysts for the solvent-free Biginelli reaction with a high turnover frequency value of 338.4 h. Interestingly, a variety of 3,4-dihydropyrimidin-2(1 H)-ones have been obtained in high yields and short times.
通过引入双核[M(μ-OH)(COO)]（M = Co，Ni）二级结构单元和吡啶基羧酸支撑的四羧酸盐，构建了一种独特的三维框架，其中包含三种不同类型的纳米级多面体笼。组装的配合物具有孤立的双功能单中心路易斯酸和布朗斯特酸，可用作无溶剂Biginelli反应的高效多相催化剂，其周转频率值高达338.4 h⁻¹。有趣的是，在短时间内以高产率获得了多种3,4-二氢嘧啶-2(1H)-酮。
