In spite of the fact that a variety of reactions have been exploited for creation of innumerable porous organic polymers (POPs), aldol condensation reactions between aldehydes and ketones leading to enones remain unutilized quite inexplicably. We surmised that the enone functionality can be exploited for stabilization of Pd akin to the manner of Pd(0) in Pd₂(dba)₃ by developing POPs based on aldol condensation reactions of polycarbonyl compounds with dialdehydes, and that such materials can be employed for catalytic transformations. By subjecting rationally designed tri-/tetraacetyl-functionalized aryl amines to aldol condensations with terephthalaldehyde, three different POPs, i.e., TPAPOPs 1–3, that feature enone functionalities have been synthesized and shown to exhibit palpable gas sorption properties. Remarkably, inverse uptake for sorption of H₂ over N₂ was observed for all POPs. As surmised, the representative POP, i.e., TPAPOP-1, was found to stabilize in situ-generated Pd(0) nanoparticles to enable application of the resultant material, i.e., Pd@TPAPOP-1, as a recyclable heterogeneous catalyst for a number of organic transformations. It is shown that coupling reactions such as Suzuki and Heck, and reductions such as nitro-to-amine and hydrogenation of olefins can be accomplished in a facile manner by employing Pd@TPAPOP-1 as a heterogeneous recyclable catalyst; the aforementioned transformations have been demonstrated on a broad set of substrates for each type.

尽管已经开发了各种各样的反应来创建无数的多孔有机聚合物（POP），但醛和酮之间的醛醇缩合反应导致烯酮的使用仍然相当莫名其妙地未被利用。我们推测，通过开发基于多羰基化合物与二醛的醛醇缩合反应的POPs，可以利用烯酮官能团来稳定Pd，使其类似于Pd ₂（dba）₃中Pd（0）的方式，并且可以使用此类材料用于催化转化。通过使合理设计的三- /四乙酰基官能化芳基胺向醛醇缩合与对苯二甲醛，三个不同的持久性有机污染物，即TPAPOPs 1 - 3已经合成了具有烯酮功能的功能，并且显示出明显的气体吸附性能。值得注意的是，对于所有POPs，都观察到H ₂在N _2上的吸附反吸收。如所推测的，发现代表性的POP，即TPAPOP-1，稳定了原位生成的Pd（0）纳米颗粒，从而使得所得的材料，即Pd @ TPAPOP-1，能够作为许多种的可循环使用的非均相催化剂。有机转化 结果表明，通过使用Pd @ TPAPOP-1作为异质可回收材料，可以轻松实现Suzuki和Heck等偶联反应，以及硝基-胺还原和烯烃氢化等还原反应。催化剂; 对于每种类型，已经在各种各样的基材上证明了上述转化。