Applications of bio-resource based sustainable heterogeneous Pd-Nanocatalyst for cross-coupling and michael addition reactions

The development of efficient and cost-effective catalysts from renewable sources is crucial for sustainable  chemistry. Herein, we developed a bio-heterogeneous Pd-nanocatalyst (PdNc@PA) by incorporating palladium  nanoparticles into biodegradable kenaf-cellulose modified with poly(amidoxime) ligands. The catalyst has  demonstrated remarkable stability and exceptional catalytic performance in a range of cross-coupling including  Mizoroki-Heck, Suzuki-Miyaura, and Tamejiro-Hiyama reactions of inactivated aryl chlorides resulting in high  yields of the desired coupling products. Additionally, PdNc@PA was also found to be effective in Michael  addition reactions producing N, S, O-alkylated products in high yields. Furthermore, the PdNc@PA catalyst  demonstrated robustness and recoverability allowing it to be reused across successive cycles without significant  loss of catalytic activity. The incorporation of renewable resources in catalyst development offers an environ?mentally conscious alternative to traditional synthetic approaches. This research highlights the potential of  utilizing biodegradable materials as catalyst supports, which could significantly diminish environmental impact  and waste production. Moreover, this study demonstrates the versatility of PdNc@PA as a proficient and  reusable catalyst for a diverse array of organic reactions. These discoveries provide an encouraging pathway  towards the development of sustainable and economically viable catalysts suitable for industrial applications.