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بیست و نهمین کنفرانس شیمی آلی ایران
[60]Fullerene-Based Pd(0) complexes of phosphorus ylide as efficient heterogeneous nano-catalyst for Suzuki reaction
نویسندگان :
محسن صیادی ( دانشگاه بوعلی سینا ) , مهتاب نعیم ( دانشگاه ایلام )
کلید واژه ها :
Pd-[60]fullerene complexes،phosphorus ylides،Suzuki reaction،synthesis
چکیده مقاله :
In the recent years, functionalization of fullerenes C60 and investigation of their new properties, in particular biological, catalytic and reactivity studies of these compounds have attracted the attention of academic researchers [1]. During the last three decades, different palladium-fullerene complexes have been developed extensively as efficient nano-catalysts for a variety of reactions due to their unique nanostructures and higher surface area than traditional Pd-based catalysts [2–4]. This work reports the synthesis and catalytic properties of new mono- and bidentate Pd(0)-[60] fullerene complexes, prepared by reaction of α-keto stabilized phosphorus ylides [Ph2P(CH2)nPPh2C(H)C(O)C6H4-m-OMe] (n=1, (Y1); n=2, (Y2)) C60 and Pd(dba)2 (dibenzylideneacetone(dba)). The synthesized complexes exhibit different structures, including P,C-chelated [(η2-C60)Pd(κ2-Y1)] (1) and P-coordinated [(η2-C60)Pd(Y2)2] (2) complexes. These complexes have been fully characterized by spectroscopic methods and other conventional techniques such as IR, UV-Vis, SEM and TEM analyses. Also, a comparison between the catalytic activity of Pd complexes 1 and 2 was evaluated in the Suzuki reaction of various aryl halides with phenylboronic acid. (Scheme)
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