Fig. 2: Regioselective and enantioselective cyclizative aminoboration.

A Copper-catalyzed alkene cis-aminoboration. B Sterically controlled formation of 5-membered N-heterocycle by copper-catalyzed cyclizative aminoboration. C Coordinatively controlled formation of chiral 6-membered N-heterocycle by enantioselective copper-catalyzed cyclizative aminoboration.