Combination of CuBr2 and multi-functional ligand bearing a bidentate nitrogen unit,a phenol group and a TEMPO moiety as catalyst for the aerobic oxidation of primary alcohols |
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Authors: | Yuecheng Zhang Mengjia Cui Wenchan Ma Jiquan Zhao |
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Institution: | School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China |
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Abstract: | A novel ligand (L) bearing a bidentate nitrogen ligand unit, a phenol group and a TEMPO moiety has been synthesized. The ligand has been used as a catalyst precursor for the copper-catalyzed aerobic oxidation of alcohols to aldehydes, in the presence of K2CO3. The complex obtained in-situ from the ligand with copper(II) bromide (CuBr2) in a 2:1 acetonitrile/water mixture, selectively catalyzes the aerobic oxidation of primary benzylic and allylic alcohols to their corresponding aldehydes, and no over-oxidation products are detected. |
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Keywords: | Corresponding author Fax: +86 22 60202926 Alcohols Aerobic oxidation Multifunctional ligand TEMPO Bidentate nitrogen ligand |
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