Phosphine-Functionalized Chitosan Microparticles as Support Materials for Palladium Nanoparticles in Heck Reactions

Herein, we investigated the activation and stabilization of Pd nanoparticles using microparticles of chitosan-functionalized with phosphine moieties. The catalytic activity of the prepared material was assessed in a series of Heck reactions, which demonstrated the potential of our catalyst concerning yields and reaction scope. Comparative experiments confirmed the superior performance of the phosphine-modified material with respect to a similar catalyst derived from non-functionalized chitosan. Finally, the prepared catalyst also exhibited appreciable activity even after four consecutive reaction runs, with minimal loss of Pd by leaching. [GRAPHICS] .

Automated summary

In this study, we investigated the activation and stabilization of Pd nanoparticles using chitosan microparticles functionalized with phosphine moieties. The catalytic activity of the prepared material was evaluated in Heck reactions, showing promising results in terms of yields and reaction scope. Comparative experiments confirmed the superiority of the phosphine-modified material compared to a similar catalyst derived from non-functionalized chitosan. Furthermore, the prepared catalyst exhibited considerable activity even after four consecutive reaction runs, with minimal Pd leaching.