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A novel approach to stereodivergent synthesis of carbocyclic α‐quaternary amino acid derivatives, bearing two contiguous stereocenters, is proposed through sequential dual Cu/Ir‐catalyzed asymmetric allylation and ring‐closing metathesis. A variety of five and six‐membered carbocyclic α‐quaternary amino acid derivatives could be readily achieved in good to high yields with exclusive regioselectivities,...
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