174692-32-1Relevant academic research and scientific papers
Reaction of alkylzirconocene cation complexes with (R-C=C-)2SiR2 reagents: Preparation of heterodimetallic compounds containing a μ-alkyayl ligand bridge between zirconium and silicon
Roettger, Dirk,Erker, Gerhard,Froehlich, Moland,Kotila, Sirpa
, p. 5 - 9 (1996)
The methylzirconocene cation, employed as the [Cp2ZrCH3(THF)]+BPh4- reagent la reacts with (R′C=C)2SiR2 substrates (6a-d) by means of carbometallation of an alkynyi group to yield the mixed metal ring systems 8a-d, containing both a 1,1-disubstituted ,u-alkenyl and an alkynyi bridge between zirconium and silicon (e.g. shown by X-ray crystal structure analyses of complexes 8a and 8c). A similar addition reaction takes place upon treatment of the (butadiene)zirconocene/tris(pentafluorophenyl)borane 1:1 addition product 9 with (CH3-C=C)2Si(CH3)2 (6c) to give 10. Here the incipient alky] zirconocene cation character of the metallocene/borate betaine complex 9 shows up in the alkynyl silane carbometallation reaction.
