Transition metal complexes, especially iridium(III) complexes with 2-arylpyridine ligands such as fac-[Ir(ppy)₃] (ppyH = 2-phenylpyridine) have attracted much attention as phosphors for organic lightemitting diodes (OLED). We report on a novel synthesis method for the production of facial trisortho-metalated iridium(III) complexes fac-[Ir(L)₃] (L = 2-arylpyridine) by the reaction of IrCl₃·nH₂O with a large excess of the corresponding 2-arylpyridine under microwave irradiation. The method does not require "dehalogening reagent" such as AgCF₃SO₃, and fac tris-ortho-metalated Iridium(III) complexes were obtained rapidly, selectively and efficiently compared to the procedure with standard oil-bath heating.