One pot preparation of PVA-sodium alginate-PdCl2 with excellent recyclability properties as a catalyst for Heck cross-coupling reactions

• Published in: Inorganic Chemistry Communications
• Main Author: Abdul Rahman N.A.; M. Shamsuddin N.A.; Musa M.; Alias Y.; Sharif I.; Mohamed A.H.; Kassim K.; Said N.R.
• Format: Article
• Language: English
• Published: Elsevier B.V. 2023
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85165987045&doi=10.1016%2fj.inoche.2023.111035&partnerID=40&md5=65bb453d82fff675068eb8b99b4098d3

Developing polyvinyl alcohol-sodium alginate (PVA-SA) polymer as palladium chloride (PdCl2) support could produce an excellent recyclable catalyst for Heck reactions. Nevertheless, several tedious steps and toxic chemicals are required to synthesise PVA-SA metals. The PVA-SA polymer manufactured in this study is a cost-efficient commercial polymer utilisable in novel polymer-supported PdCl2 catalyst designs. The present study employed an ultrasonic-assisted method to produce a PVA-SA-supported PdCl2 catalyst in one pot. The highest PdCl2 concentration in the ultrasonic-assisted PVA-SA-PdCl2 catalyst synthesised was 7.852 mg/L. Subsequently, the catalytic behaviours of the catalyst in Heck cross-coupling reactions of aryl halides with styrene were investigated. The catalytic reaction achieved a 100% conversion rate when 1 mmol% catalyst load, K2CO3 base, DMA solvent, and a 60 min reaction at 165 °C were employed. Moreover, the catalyst exhibited excellent reproducibility and recyclability (over 11 cycles). © 2023 Elsevier B.V.