The aza-Michael reactions of amines with alpha,beta-unsaturated compounds have efficiently been carried out using phosphate impregnated titania containing 84.5% of TiO2 and 15.5% of [Ti4H11(PO4)(9)]center dot nH(2)O (n = 1-4) as a heterogeneous catalyst. Solvent-free condition, recyclability of the catalyst, very good yield and scaling up of the reactions are important attributes in this catalysis. Aromatic amines do not participate effectively in the reaction.