is a well-established procedure for the synthesis of enantio-enriched amines. Five supported
cinchona-based picolinamides have been prepared and their activity tested in a model
reaction. The comparison of different supporting materials revealed that polystyrene gave
better results than silica in terms of stereoselectivity. The applicability of the solid-supported
catalyst of choice to the reduction of different imines was also demonstrated. Additionally, for …