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ORGANIC LETTERS
卷 13, 期 6, 页码 1278-1281出版社
AMER CHEMICAL SOC
DOI: 10.1021/ol1030487
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- National Science Council, Taiwan, ROC
Michael addition of carbethoxymethylenetriphenylphosphorane (a Wittig reagent) to nitroalkenes, followed by a reaction with ethyl formylformate and cinnamaldehydes, or formaldehyde and cinnamaldehydes, provided the respective pentasubstituted cyclopentanecarbaldehydes bearing a quaternary carbon center and pentasubstituted cyclohexanecarbaldehydes having five contiguous stereocenters with excellent enantioselectivities (up to >99% ee).
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