Formal Substitution of Bromocyclopropanes with Nitrogen Nucleophiles

A highly chemo- and diastereoselective protocol toward amino-substituted donor−acceptor cyclopropanes via the formal nucleophilic displacement in bromocyclopropanes is described. A wide range of N-nucleophiles, including carboxamides, sulfonamides, azoles, and anilines, can be efficiently employed in this transformation, providing expeditious access to stereochemically defined and densely functionalized cyclopropylamine derivatives.