[volksmacke]

How to carry out this transformation?

I was thinking to just treat it with a base under elevated temperature and hope for the best.
Although the presence of the tertiary carboanion intermediate makes me a bit uneasy.

Is it feasible considering the release of strain from that three membered ring?   

Edit: actually the mechanism would be rather concerted capture of a proton, and the base less nucleophilic... Still, could it be carried out in principle?