Scheme 2. Synthesis of 5,5-diallyl cyclic sulfamidate imines. Reaction conditions: (i) 1 (1.0 equiv.), 2 (1.1 equiv.), [Pd(π-C3H5)Cl]2 (5 mol%), L1 (15 mol%), CH2Cl2, rt, 1 h. Yield determined by 1H NMR integration against an internal standard (dimethyl sulfone or trans-stilbene oxide). Enantiomeric ratio determined by chiral HPLC.
