MnIIILx/t-BuOOH-induced activation of dioxygen for the oxygenation of cyclohexene |
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Affiliation: | 1. School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, PR China;2. The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, PR China |
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Abstract: | Several manganese (III) complexes (MnIIILx) in combination with tert-butyl hydroperoxide (t-BuOOH) activate dioxygen (O2) to oxygenate cyclohexene (c-C6H10) to its ketone, alcohol, and epoxide. The product profiles depend on the ligand and solvent matrix. With picolinate (PA), bipyridine (bpy), or triphenylphosphine oxide (OPPh3) as the ligand in py/HOAc (2:1 molar ratio) dominant product is the ketone [c-C6H8(O)] whereas Schiff–base complexes produce c-C6H8(O), c-C6H9(OH) and the epoxide in almost equal yields. However, in MeCN c-C6H8(O) is the dominant product for all of the complexes. |
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