Eight novel poly(amide-imide)s were synthesized under microwave irradiation by using a domestic microwaveoven from the polycondensation reactions of N.N’-(pyromellitoyl)-bis-L-alanine diacid chloride(1)with eight differentderivatives of hydantoin compounds(2a-h)in the presence of a small amount of a polar organic medium such as o-cresol.The polycondensation proceeded rapidly,compared with the conventional solution polycondensation and was completedwithin 8-10 min,producing a series of new poly(amide-imide)s(3a-h)with inherent viscosities about 0.35-0.68 dL/g inhigh yields.The obtained PAIs(3a-h)were fully characterized by means of FT-IR spectroscopy,elemental analyses,inherentviscosity(ηinh),solubility and specific rotation measurements.All of the resulting polymers show optical rotation and areoptically active.Thermal properties of the poly(amide-imide)s were investigated by using thermal gravimetric analysis(TGA). Eight novel poly (amide-imide) s were synthesized under microwave irradiation by using a microwave digest from the polycondensation reactions of N.N ’- (pyromellitoyl) -bis-L-alanine diacid chloride (1) with eight different derivatives of hydantoin compounds 2a-h) in the presence of a small amount of a polar organic medium such as o-cresol.The polycondensation proceeded rapidly, compared with the conventional solution polycondensation and was completedwithin 8-10 min, producing a series of new poly (amide- The obtained PAIs (3a-h) were fully characterized by means of FT-IR spectroscopy, elemental analyzes, inherent viscosity (ηinh), solubility and (iii-h) with inherent viscosities of 0.35-0.68 dL / specific rotation measurements. All of the polymers polymers show optical rotation and aretically active. Thermo properties of the poly (amide-imide) s were investigated by using thermal gravimetric analysis (TGA).