Conjugate addition of diethylzinc to α,β-unsaturated lactones catalyzed by copper–phosphite complexes

Abstract
Highly enantioselective conjugate addition of diethylzinc to α,β-unsaturated lactones was achieved by using chiral diphosphite–copper catalysts; the structure of a chiral diphosphite–copper(I) catalyst was determined by single crystal X-ray diffraction.

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