Bifunctional Heterogeneous Ru/POP Catalyst Embedded with Alkali for the N‑Formylation of Amine and CO₂

CO₂ as a C1 building block for the N-formylation reaction is attracting much attention. In general, the N-formylation reaction requires the participation of alkali, which can break the equilibrium to promote the reaction process. We developed a After Ru metalationheterogeneous catalyst with an alkaline functional group based on a porous organic polymer (denoted as Ru-PPh₃-SO₃Na@POPs) by the copolymerization of vinyl-functionalized PPh₃ (3v-PPh₃) and sodium-4-vinylbenzenesulfonate. After Ru metalation, the catalyst obtained a high TON without the addition of alkali under mild conditions. The Ru-PPh₃-SO₃Na@POP catalyst can immobilize metals and alkali efficiently on porous organic polymers, showing excellent performance and good stability for the N-formylation reaction of amine and CO₂.