Efficient synthesis of biazoles by aerobic oxidative homocoupling of azoles catalyzed by a copper(I)/2-pyridonate catalytic system |
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Authors: | Zhu Mingwen Fujita Ken-ichi Yamaguchi Ryohei |
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Institution: | Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan. |
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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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