National Changhua University of Education Institutional Repository : Item 987654321/18969
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题名: Chemoselective Aerobic Oxidation of Unproteced Diols Catalyzed by Pd-(NHC) (NHC = N-heterocyclic carbene) Complexes
作者: Lorenzo Bettucci;Claudio Bianchini;Werner Oberhauser;Hsiao, Tsun-Hung;Lee, Hon Man
贡献者: 化學系
日期: 2010-05
上传时间: 2014-08-14T04:30:22Z
出版者: Elsevier
摘要: Neutral Pd(X)(η3-allyl) (X = Cl, OAc (acetate)) complexes bearing mono-coordinating NHC ligands have been synthesized, characterized and employed to catalyze the aerobic oxidation of unprotected 1,2- and 1,3-diols selectively to hydroxy ketones. A comparison of the catalytic performance of these precursors with a reference system has shown that the precursor with the ligands N,N′-bis(adamantyl)imidazol-2-ylidene and chloride is the most efficient for the chemoselective oxidation of 1,2-diols is concerned. High-pressure 1H NMR (HPNMR) experiments in combination with catalytic batch reactions have provided valuable information on the activation of the precursor as well as on the stability of the catalysts.
關聯: Journal of Molecular Catalysis A-Chemical, 322(1-2): 63-72
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