Coupling of Carbomethoxy and Vinylidene Ligand in Molybdenum Complexes
Resource
Organometallics 19 (3): 269-274
Journal
Organometallics
Journal Volume
19
Journal Issue
3
Pages
269-274
Date Issued
2000
Author(s)
Abstract
Treatment of [Cp(dppe)(CO)Mo=C=C(Ph)CH2CH=CH2]I (2) with MeONa caused nucleophilic attack to occur at the terminal CO ligand. This is followed by a coupling reaction of the resulting carbomethoxy group with Cα of the vinylidene ligand accompanied with coordination of the terminal olefin to afford Cp(dppe)MoC(COOMe)=-C(Ph)CH2CH==CH2 (5). Similar coupling was observed when [Cp(dppe)(CO)Mo=C=C(Ph)CH2Ph]I (3) was treated with MeONa, but the reaction afforded the neutral allylic complex Cp(dppe)Mo[CH-(COOMe)C(Ph)CHPh] (6). The structures of complexes 5 and 6 have been determined by X-ray diffraction analysis.
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Type
journal article
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