V.  Nair, Menon, R. S., Biju, A. T., Sinu, C. R., Paul, R. Rajan, Jose, A., and Sreekumar, V., ?Employing homoenolates generated by NHC catalysis in carbon-carbon bond-forming reactions: state of the art?, Chemical Society Reviews, vol. 40, no. 11, pp. 5336-5346, 2011.