Vanadium bis-phosphine imido and oxo chloride alkylidenes have been extensively applied in the ring-closing metathesis of various acyclic olefins. However, their reactions involving ethylene have shown limited productivity due to rapid decomposition. The primary degradation pathway involving V bis-phosphine imido complexes is β-H elimination at an unsubstituted metallacyclobutane. In contrast, β-H elimination is disfavored for V oxo species, but bimolecular decomposition precludes its high productivity. Herein, we present the synthesis of V imido NHC complexes that are the most productive V catalysts toward various terminal olefins in ring-closing metathesis reactions. Experimental and computational studies suggest that β-H elimination and bimolecular decomposition are disfavored for V imido NHC complexes.
CITATION STYLE
Tejeda, G., Belov, D. S., Fenoll, D. A., Rue, K. L., Tsay, C., Solans-Monfort, X., & Bukhryakov, K. V. (2022). Vanadium Imido NHC Complexes for Ring-Closing Olefin Metathesis Reactions. Organometallics, 41(4), 361–365. https://doi.org/10.1021/acs.organomet.2c00013
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