Synthesis and Catalytic Properties of Gold(III) Complexes with Triazine Ligand

Abstract

Gold catalysts were found to have high catalytic activities.[1] They can be stabilized by ligands such as triazine, bipyridine, or terpyridine.[2] It was found to be an effective catalyst in the addition of nucleophiles to triple bonds. In relation to this work, we have adopted 2,4-diamino-6-(2-pyridyl)-1,3,5-triazine 1 to form the gold(III) complex 2.[3] The gold(III) complex 2 was characterized and it demonstrated catalytic hydration of aromatic alkyne (yield 10~80%). We have optimized the condition with the use of a mixture of water and methanol (v:v, 1:5) as the solvent system with catalytic amount of sulfuric acid. The reaction was carried out at 65 °C for 1 hour unless specify. The catalytic results were compared with KAuCl4.