Palladium on Calcium Carbonate Combined to 2??Hydroxypropyl?螃?/β??cyclodextrins: A Selective Catalytic System for Aqueous Heck Coupling and Hydroarylation

…, ALF Souza, L Aguiar, OAC Antunes

Index: Senra, Jaqueline D.; Malta, Luiz Fernando B.; Souza, Andrea Luzia F.; Aguiar, Lucia C. S.; Antunesa Advanced Synthesis and Catalysis, 2008 , vol. 350, # 16 p. 2551 - 2558

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Citation Number: 29

Abstract

Abstract An efficient, selective and recoverable catalytic system for ligand-free aqueous Heck reactions using hydroxypropylated cyclodextrins (HPCDs) and palladium on calcium carbonate (Pd/CaCO 3) is highlighted. Remarkably, stereo-and chemoselectivities could be tuned by the cavity size of cyclodextrins, exploiting the relevance of host-guest interactions. UV-Vis experiments have led to strong evidence concerning an interplay between Pd (II) ...