Catalytic [2+2+1] Cross-Cyclotrimerization of Silylacetylenes and Two Alkynyl Esters To Produce Substituted Silylfulvenes
作者:Yu Shibata、Ken Tanaka
DOI:10.1002/anie.201105517
日期:2011.11.11
Three become one: The cationic rhodium(I) complex [Rh(cod)2]BF4 catalyzes the [2+2+1] cross‐cyclotrimerization of silylacetylenes and twoalkynylesters, leading to substitutedsilylfulvenes (see scheme; cod=1,5‐cyclooctadiene). The reductive complexation of the silylfulvene product with RhCl3 in EtOH furnished the corresponding dinuclear electron‐deficient cyclopentadienyl rhodium(III) complex.