The C-C bond forming reactions are of fundamental importance in chemistry. As a result there is ever growing interest for chemists to develop new methods for C-C bond formation. We report here three dimensional nano-cage mesoporous aluminosilicate materials Al-KIT-5 which exhibited very good catalytic activity for Mukaiyama-aldol and Mukaiyama-Michael reactions under solvent free condition. Mukaiyama-aldol and Mukaiyama-Michael reactions of silyl ketene acetal with aldehyde and alpha, beta-unsaturated carbonyl compounds produced beta-hydroxy esters and 1, 5-dicarbonyl compounds, respectively in good yields. The product selectivity was found to be 100 % in a short reaction period. The high acidity, 3D pores, and a huge space in the nano-cages materials make them attractive candidate for carrying out important organic reactions. The catalyst provide a simple, easy to handle method, and could be used to solve the problems of corrosion, toxicity, waste production, and high cost that are being currently encountered by the conventional homogeneous catalysts.