Table 2.
Conditions: Nucleophile (1 equiv.), 16 (10 mol%), NaH2PO4 (6 equiv.), ArN2BF4 (1.2 equiv.), cyclohexane (0.025M).
Conditions: Nucleophile (1 equiv.), 17 (10 mol%), NaH2PO4 (6 equiv.), ArN2BF4 (1.2 equiv.), MTBE (0.025M).
Isolated yield.
Enantiomeric excess determined by chiral phase HPLC.