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.

中文翻译：

---

微孔聚合物作为五配体环戊二烯基铑转移加氢催化剂的大分子配体

在此，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异质化的平台的用途。这些高度稳定的非均相催化剂证明了其在α-芳基酮转移加氢中的效率。此外，我们表明它们的催化活性与均相类似物相似，突出了在固体中不存在扩散限制的情况。我们通过使用Hammett参数作为均相和异相系统中催化位点电子环境的描述符来合理化所测活动的差异。