Gold Functionalized Platinum M12L24-Nanospheres and Their Application in Cyclization Reactions

摘要: Nanospheres can be formed by combining 24 bispyridinyl building blocks with a palladium or platinum precursor. These spheres functionalized on the inside gold(I) chloride complex leading to high local concentration of complexes. The makes neutral gold species an active catalyst. Furthermore, platinum-gold post modified silver(I) salt form cationic catalysts. assemblies are demonstrated stable in presence various substrates and as result several cyclization reactions have been carried out using these new Higher conversions [4+2] cycloaddition observed for sphere catalyst compared mono-nuclear analogues. Also 1,6-enynes facilitated confined activity is activation allenes. For lactonization alkynoic acids, different selectivity standard complex, demonstrating that due space induce other catalysis. Keywords: supramolecular catalysis; concentration; nanospheres;