Citation:
Zhen QIAO, Xue Yan SHI, Qing Hua BIAN, Shi Cong HOU, Min WANG. Asymmetric Induction of Chiral 1,1'-Bis (oxazolinyl) ferrocenes as Ligands in Metal-Catalyzed Cyclopropanation and Diels-Alder Reactions[J]. Chinese Chemical Letters,
;2004, 15(9): 1015-1018.
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Four chiral 1,1'-bis(oxazolinyl)ferrocenes(1a-1d) have been prepared and used as ligands in the copper catalyzed asymmetric cyclopropanation of styrene with ethyl diazoacetate (EDA) and the magnesium catalyzed Diels-Alder reaction between 3-acryloyl-2-oxazolidinone and cyclopentadiene. Enantioselectivities up to 24% and 41%, respectively, for cyclopropanation and Diels-Alder reaction were observed.
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