A transformation with promising versatility: The vinyl zirconium complex 1 can be prepared readily in situ from the educts mentioned in the title and reacts with electrophiles, including other transition metal complexes, to give polysubstituted olefins (see scheme; n=0–2, Cp=C5H5). A five-membered zirconacycle en route to the vinyl complex apparently isomerizes to give the stable E isomer before elimination.
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Farhat et al. (2002) studied this question.
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