Expanded ring N-heterocyclic carbene complexes of zero valent platinum dvtms (divinyltetramethyldisiloxane): Highly efficient hydrosilylation catalysts
作者:Jay J. Dunsford、Kingsley J. Cavell、Benson Kariuki
DOI:10.1016/j.jorganchem.2010.08.045
日期:2011.1
7-membered NHC (N-heterocyclic carbene) complexes 7–12 of zero valent platinum dvtms (divinyltetramethyldisiloxane), [Pt(NHC)(dvtms)] are reported. A number of the complexes were investigated as catalyst precursors in the hydrosilylation of a range of unsaturated substrates, including alkynes, alkenes and a ketone with triethylsilane and bis(trimethylsiloxy)methylsilane (MD’M), at low catalyst loading (0
报道了一系列零价铂基dvtms(二乙烯基四甲基二硅氧烷)[Pt(NHC)(dvtms)]的一系列新的6元和7元NHC(N-杂环卡宾)配合物7-12的合成和表征。在低催化剂负载量(0.005 mol%)下,研究了许多配合物作为催化剂前体在一系列不饱和底物(包括炔烃,烯烃和酮)与三乙基硅烷和双(三甲基甲硅烷氧基)甲基硅烷(MD'M)的氢化硅烷化中的作用。 ; 通常,发现1-官能化产物的活性和选择性很高。