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http://ir.ncue.edu.tw/ir/handle/987654321/18969
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| Title: | Chemoselective Aerobic Oxidation of Unproteced Diols Catalyzed by Pd-(NHC) (NHC = N-heterocyclic carbene) Complexes |
| Authors: | Lorenzo Bettucci;Claudio Bianchini;Werner Oberhauser;Hsiao, Tsun-Hung;Lee, Hon Man |
| Contributors: | 化學系 |
| Date: | 2010-05
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| Issue Date: | 2014-08-14T04:30:22Z
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| Publisher: | Elsevier |
| Abstract: | 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. |
| Relation: | Journal of Molecular Catalysis A-Chemical, 322(1-2): 63-72 |
| Appears in Collections: | [化學系] 期刊論文
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