Synthesis of a new palladacyclopropa[60]fullerene complex containing new unsymmetrical phosphorous ylide and study on its catalytic activity

Since the discovery of the C60 in 1985 by Kroto, Curl, and Smalley [1], coordination chemistry of transition metal-fullerene complexes has attracted the attention of academic researchers more than one decade. Among the myriad of transition metal-fullerene complexes reported today [2], there are only a few metallofullerene complexes synthesized that contain phosphorus ligands.In this work the new Pd[60]fullerene complex incorporating α-keto stabilized phosphorus ylide was synthesized in a three-component reaction of the unsymmetrical phosphorus ylide [Ph2P(CH2)2PPh2=C(H)C(O) R] (Y), C60 and Pd(dba)2 (dba= dibenzylideneacetone). The obtained novel P-coordinate complex [(η2-C60)Pd(κ2-Y)] was characterized successfully by 1H, 13C and 31P NMR spectroscopic methods and other conventional techniques such as IR, UV-vis and SEM analysis. In addition, a studying between the catalytic activities of the complex was evaluated in the Suzuki and Heck reactions of various aryl halides and olefins in DMF that the coupled products of these reactions were obtained in good to excellentyields and purity, with short reaction times and low catalyst loading.