Microporous Polymers as Macroligands for Pentamethylcyclopentadienylrhodium Transfer‐Hydrogenation Catalysts
Microporous Polymers as Macroligands for Pentamethylcyclopentadienylrhodium Transfer‐Hydrogenation Catalysts
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DOI：
10.1002/cctc.201701836
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发表时间：
2018-04
期刊：
影响因子：
4.5
通讯作者：
F. Wisser;Yorck Mohr;E. A. Quadrelli;D. Farrusseng;J. Canivet
中科院分区：
文献类型：
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作者：
F. Wisser;Yorck Mohr;E. A. Quadrelli;D. Farrusseng;J. Canivet
在这里，我们报道了两种基于联吡啶的多孔聚合物的合成及其作为五甲基环戊二烯基铑催化物种多相化平台的应用。这些高度稳定的多相催化剂在α-芳基酮的转移加氢反应中表现出较高的效率。此外，我们还表明，它们的催化活性与均相类似物相似，突出了固体中没有扩散限制。我们用Hammett参数来描述均相和非均相体系中催化中心的电子环境，从而合理地解释了测量到的活度差异。
Herein, we report the synthesis of two bipyridine‐based porous polymers and their use as platforms for the heterogenization of pentamethylcyclopentadienylrhodium catalytic species. These highly stable heterogeneous catalysts demonstrate their efficiency in the transfer hydrogenation of α‐aryl ketones. Moreover, we show that their catalytic activity is similar to that of homogeneous analogues, highlighting the absence of diffusion limitations in the solids. We rationalize the differences in the measured activities by using the Hammett parameter as a descriptor of the electronic environment of the catalytic site in both homogeneous and heterogeneous systems.