Porous Coordination Polymers of Diverse Topologies Based on a Twisted Tetrapyridylbiaryl: Application as Nucleophilic Catalysts for Acetylation of Phenols
作者:Saona Seth、Paloth Venugopalan、Jarugu Narasimha Moorthy
DOI:10.1002/chem.201404552
日期:2015.1.26
Porous coordination polymers (CPs) with partially uncoordinated pyridyl rings based on rationally designed polypyridyl linkers are appealing from the point of view of their application as nucleophilic catalysts. A D2d‐symmetric tetradentate organic linker L, that is, 2,2′,6,6′‐tetramethoxy‐3,3′,5,5′‐tetrakis(4‐pyridyl)biphenyl, was designed and synthesized for metal‐assisted self‐assembly aimed at
从它们作为亲核催化剂的应用的观点来看,基于合理设计的聚吡啶基连接基的具有部分未配位的吡啶基环的多孔配位聚合物(CPs)具有吸引力。甲d 2 d -对称四齿有机连接大号,即,2,2',6,6'-四甲氧基-3,3',5,5'-四(4-吡啶基)联苯,被设计和用于合成金属针对多孔CP的辅助自组装。根据金属离子和抗衡阴离子的性质,发现配体L可以作为3或4连接的结构单元,从而导致具有多种拓扑结构的多孔CP。的反应大号用Zn(NO 3)2和Cd(NO 3)2生成具有“ fes ”拓扑结构的多孔2 D CP ,其中四吡啶基接头L用作3连接单元,其自由吡啶基环充分暴露于孔中。这些含有未配位吡啶基环的多孔CP的功能用途是通过将它们用作有效的非均相亲核催化剂,以对许多具有不同电子性质和反应活性的酚进行乙酰化来证明的。