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[reaction: see text]The copper-catalyzed asymmetric conjugate addition of dialkylzinc onto various nitro-olefins has been carried out with excellent results. An enantiomeric excess of up to 94% was obtained using 0.5% Cu(OTf)2 and 1% of chiral trivalent phosphorus ligand.
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Alexakis et al. (2000) studied this question.
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