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Efficient synthesis of biazoles by aerobic oxidative homocoupling of azoles catalyzed by a copper(I)/2-pyridonate catalytic system
Authors:Zhu Mingwen  Fujita Ken-ichi  Yamaguchi Ryohei
Institution:Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan.
Abstract:A highly efficient and convenient CuCl/2-pyridonate catalytic system for oxidative homocoupling of azoles affording a biazole product has been developed. With this system, a variety of biazoles have been effectively synthesized in good to excellent yields in the presence of a very small amount of copper catalyst (1.0 mol%). It was feasible to employ air as a green oxidant.
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