The cationic rhodium complex [Rh(cod)][BF] effectively catalyses the 1,4-addition of organotrialkoxysilanes to α-substituted acrylic esters. The reactions are promoted by heating in an oil-bath or more conveniently in a microwave reactor allowing rapid access to a useful range of functionalised products including 2-alkyl succinates and α-amino acid derivatives.
Hargrave, J. D., Herbert, J., Bish, G., & Frost, C. G. (2006). Rhodium-catalysed addition of organotrialkoxysilanes to α-substituted acrylic esters. Organic and Biomolecular Chemistry, 4(17), 3235-3241. https://doi.org/10.1039/b606977k