Iridium complex-linked porous organic polymers for recyclable, broad-scope photocatalysis of organic transformations,Green Chemistry

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Iridium complex-linked porous organic polymers for recyclable, broad-scope photocatalysis of organic transformations
Green Chemistry ( IF 9.3 ) Pub Date : 2019-11-22 , DOI: 10.1039/c9gc03688a
Zi-Yue Xu _{1,

2,

3,

4,

5} , Yi Luo _{1,

2,

3,

4,

5} , Dan-Wei Zhang _{1,

2,

3,

4,

5} , Hui Wang _{1,

2,

3,

4,

5} , Xing-Wen Sun _{1,

2,

3,

4,

5} , Zhan-Ting Li _{1,

2,

3,

4,

5}

Affiliation

Two rigid porous organic polymers (Ir-POP-1 and Ir-POP-2) were prepared from the coupling reactions of tetraphenylmethane tetraborate and two [Ir(ppy)2(dtbbpy)]⁺-based bitopic linkers and applied as heterogeneous visible-light photocatalysts for organic transformations. Ir-POP-2 was found to exhibit high catalytic activity for a wide range of organic reactions, which include Smiles–Truce rearrangement of alkyliodides, desulfurative conjugate addition to Michael acceptors, and aerobic oxidations of sulfides and arylboronic acids. For all the transformations, Ir-POP-2 could achieve heterogeneous photocatalytic efficiency that rivals that of the homogeneous prototype iridium complexes. This remarkably high photocatalytic performance has been attributed to the large pore size of the conjugated backbone. The new heterogeneous photocatalyst was also highly stable to achieve good recyclability for all the studied reactions and could be reused eight to nineteen times.

中文翻译：

铱配合物连接的多孔有机聚合物，可循环使用的广谱有机转化光催化

由四苯基甲烷四硼酸酯和两个基于[Ir（ppy）2（dtbbpy）⁺的双位连接基的偶联反应制备了两种刚性多孔有机聚合物（Ir-POP-1和Ir-POP-2），并用作异质的可见-用于有机转化的轻型光催化剂。Ir-POP-2被发现对广泛的有机反应具有高催化活性，其中包括碘化物的Smiles–Truce重排，迈克尔受体的脱硫共轭物加成以及硫化物和芳基硼酸的好氧氧化。对于所有转换，Ir-POP-2可以实现与均质原型铱配合物相媲美的异质光催化效率。这种显着高的光催化性能归因于共轭骨架的大孔径。新的非均相光催化剂还非常稳定，可以为所有研究的反应实现良好的可回收性，并且可以重复使用八到十九次。

更新日期：2019-11-22

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