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The enantioselective addition of anilines to azoalkenes was accomplished through the use of a chiral phosphoric acid catalyst. The resulting α-arylamino hydrazones were obtained in good yields and excellent enantioselectivities and provide access to enantioenriched α-arylamino ketones. A serendipitous kinetic resolution of racemic α-arylamino hydrazones is also described.

N-Bromolactams are used as tunable electrophiles to achieve the first asymmetric bromofunctionalization of allenes yielding a wide range of pyrrolidines, isoxazolidine (XI), and pyrazolidine (XIII) in high yields and enantioselectivities.