Application of recoverable nanosized palladium(0) catalyst in Sonogashira reaction
Pinhua Li, Lei Wang*, Hongji Li
*Department of Chemistry, Huaibei Coal Teachers College, Huaibei, Anhui 235000, People's Republic of China, Email: leiwanghbcnc.edu.cn
P. Li, L. Wang, H. Li, Tetrahedron, 2005, 61, 8633-8640.
Poly(vinylpyrrolidone) (PVP) supported nanosized palladium metal colloids catalyzed the Sonogashira reaction of aryl iodides and bromides with terminal alkynes in the absence of ligand, copper and amine in an environmental-friendly reaction system with ethanol as the solvent and potassium carbonate as a base. The catalyst can be recovered and recycled by a simple decantation.
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Nanoparticle palladium metal, Sonogashira coupling, Ligand free, Copper free, Amine free