The alkylidene alkyl complex depicted above can experience α-hydrogen abstraction to afford a transient titanium alkylidyne. The complex shown above is perhaps one of the most reactive species prepared in our laboratories. Any solvent it touches it C-H activate it or ring-open it (or both)! For some more information about this species: Bailey, B. C., etal. J. Am. Chem. Soc. 2005, 127, 16016-16017.