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A catalytic asymmetric nucleophilic addition of tertiary carbon nucleophiles to 2 H-azirines was established in the presence of the chiral N,N'-dioxide/CuII complex. Various chiral aziridines with vicinal tetrasubstituted stereocenters were… Click to show full abstract
A catalytic asymmetric nucleophilic addition of tertiary carbon nucleophiles to 2 H-azirines was established in the presence of the chiral N,N'-dioxide/CuII complex. Various chiral aziridines with vicinal tetrasubstituted stereocenters were obtained in high yields with excellent diastereoselectivities and enantioselectivities. Moreover, on the basis of the control experiments, X-ray structures of the products, and catalyst, a possible transition state was proposed to explain the stereoselectivity.
Journal Title: Organic letters
Year Published: 2018
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