[3+2+1] cycloaddition involving alkynes, CO and bridging vinyliminium ligands in diiron complexes: a dinuclear version of the Dötz reaction?
作者:Luigi Busetto、Fabio Marchetti、Rita Mazzoni、Mauro Salmi、Stefano Zacchini、Valerio Zanotti
DOI:10.1039/b925207j
日期:——
The vinyliminium complex [Fe2μ-η1:η3-C(SiMe3)CHCN(Me)2}(μ-CO)(CO)(Cp)2][SO3CF3] reacts with HCCR (R = CPh2OH), affording a mixture of the 2,4,6-trisubstituted oxo-η5-cyclohexadienyl complex [Feη5-C6H2O(NMe2)(SiMe3)(R)}(Cp)], the 2,6-disubstituted phenol C6H3R′(NMe2)OH (R′ = CHPh2) and 1,2,4-trisubstituted ferrocene [1-NMe2-2-R-4-SiMe3-Fc]. The corresponding reaction with HCCR (R = CMe2OH) yields analogous products: [Feη5-C6H2O(NMe2)(SiMe3)(R′)}(Cp)] (R′ = CMeCH2), the phenol C6H3R′(NMe2)OH together with [1-NMe2-2-R-4-SiMe3-Fc].
乙烯基亚胺配合物[Fe2μ-η1:η3-C(SiMe3)CHCN(Me)2}(μ-CO)(CO)(Cp)2][SO3CF3]与 HCCR(R = CPh2OH)反应,生成 2,4,6-三取代氧代-η5-环己二烯络合物[Feη5-C6H2O(NMe2)(SiMe3)(R)}(Cp)]的混合物、2,6-二取代酚 C6H3R′(NMe2)OH(R′=CHPh2)和 1,2,4-三取代二茂铁[1-NMe2-2-R-4-SiMe3-Fc]。与 HCCR(R = CMe2OH)的相应反应得到类似的产物:[Feη5-C6H2O(NMe2)(SiMe3)(R′)}(Cp)](R′= CMeCH2)、苯酚 C6H3R′(NMe2)OH 和 [1-NMe2-2-R-4-SiMe3-Fc]。