期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 18, 期 24, 页码 7486-7492出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201200379
关键词
alcohols; asymmetric catalysis; copper; enantioselectivity; hydrosilylation
资金
- National Natural Science Foundation of China [21172049, 21032003, 91127010, 21072039]
- Public Welfare Technology and Application Program of Zhejiang Province [2010C31042]
- Special Funds for the Key Innovation Team of Zhejiang Province [2010R50017]
With certain amounts of sodium tert-butoxide and tert-butanol as additives, catalytic amounts of an inexpensive and easy-to-handle copper source Cu(OAc)2.H2O, a commercially available and air-stable non-racemic dipyridylphosphine ligand, as well as the stoichiometric desirable hydride donor polymethylhydrosiloxane (PMHS), formed a versatile in situ catalyst system for the enantioselective reduction of a broad spectrum of prochiral diaryl and aryl heteroarylketones in air, in high yields and with good to excellent enantioselectivities (up to 96?%). In particular, the practical viability of this process was evinced by its successful applications in the asymmetric synthesis of optically enriched potent antihistaminic drugs orphenadrine and neobenodine.
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