摘要:
Heating a gaseous mixture of ferrocene and acetylene (1.6.3 mol ratio) at 450-degrees-C results in the formation of methylferrocene. When (C2H2)-C-13 is the substrate, GC/MS analysis reveals that the methylferrocene fraction consists of predominately two compounds: methylferrocene-C-13(1) and methylferrocene-C-13(6) in a 1:2.5 ratio. A mechanism involving initial addition of the alkyne C-H bond across the Fe-Cp bond to generate an (ethynyl-eta4-cyclopentadiene)iron hydride is proposed to explain both products.