In this work, a novel 3D lanthanide metal–organic framework (Ln-MOF) Nd-cdip (H₄cdip = 5,5′-carbonyldiisophthalic acid) was successfully synthesized, which could be used as an efficient heterogeneous catalyst for cyanosilylation and the synthesis of 2,3-dihydroquinazolin-4(1H)-one derivatives at room temperature based on the Lewis acid sites in the channels of the MOF. Moreover, Nd-cdip had an excellent turnover number (500) for catalyzing cyanosilylation in no solvent condition. Nd-cdip could be reused in both of the above-mentioned reactions at least five times without a significant decrease in yield. The possible mechanism of cyanosilylation catalyzed by Nd-cdip was studied by using the luminescence properties of Tb-cdip, which has the same structure and functions as Nd-cdip. Furthermore, both reactions catalyzed by Nd-cdip were fitted to zero-order dynamics.

中文翻译：

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三维金属钕有机骨架催化醛氰基甲硅烷基化及2,3-二氢喹唑啉-4(1H)-酮衍生物的合成

在这项工作中，成功合成了一种新型3D镧系金属有机骨架（Ln-MOF）Nd-cdip（H ₄ cdip = 5,5'-羰基二间苯二甲酸），可用作氰基甲硅烷基化的高效多相催化剂和2,3-二氢喹唑啉-4(1 H)的合成)-一种在室温下基于 MOF 通道中路易斯酸位点的衍生物。此外，Nd-cdip在无溶剂条件下催化氰基甲硅烷基化反应时具有优异的转化数（500）。Nd-cdip 可以在上述两个反应中重复使用至少五次，而收率不会显着下降。利用与Nd-cdip具有相同结构和功能的Tb-cdip的发光特性，研究了Nd-cdip催化氰基甲硅烷基化的可能机理。此外，Nd-cdip 催化的两个反应均符合零级动力学。