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A general synthesis of chiral 1,3‐disubstituted allylsilanes is established through copper(I)‐catalyzed asymmetric 1,4‐conjugate silylation of α,β‐unsaturated sulfones and subsequent Julia‐Kocienski olefination. By modification of McQuade's NHC ligand, the catalytic asymmetric conjugate silylation with a broad substrate scope is achieved in high enantioselectivity. The following Julia‐Kocienski olefination...
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