| Summary: | 碩士 === 國立中正大學 === 化學暨生物化學研究所 === 103 === Copper is an earth-abundant, inexpensive, high recycling rate and non-toxic metal element. It is the most common metals in industrial and daily necessities. In addition, it is essential to all living organisms as trace dietary minerals. Their chemistry as being catalysts has been established since at the turn of the twentieth century.
In this present study, three copper(I) complexes { CuBr(Pybim) (6), CuBr(Mesbim) (7) and [Cu(Pybim)2]PF6 (8)} were synthesized from direct reaction of imidazolium salts (Pybim)HBr (2) and (Mesbim)HBr (4) with CuBr or Cu(CH3CN)4PF6 in the presence of NaOtBu. The structure of copper(I) complexes 6, 7 and 8 were analyzed by using NMR, AA, IR, and ESI-mass. According to the analyzed data, we determined the compositions of copper(I) complexes, copper(I) complexes 6 and 7 were one ligand binding to copper and copper(I) complexes 8 was two ligand binding to copper.
We utilized copper(I) complexes { CuBr(Pybim) (6), CuBr(Mesbim) (7) and [Cu(Pybim)2]PF6 (8)} as catalysts to catalyze A3-coupling and synthesis of N-sulfonylamidines. Furthermore we used microwave flash heating conditions to promote catalysis reactions, in order to reduce reaction time, increase the efficiency of reactions and reach the goal of green chemistry.
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