Table 2. Substrate scope ^{a , b , c , d} .

^aConditions: nucleophile (1 equiv.), 16 (10 mol%), NaH₂PO₄ (6 equiv.), ArN₂BF₄ (1.2 equiv.), cyclohexane (0.025 M).

^bConditions: nucleophile (1 equiv.), 17 (10 mol%), NaH₂PO₄ (6 equiv.), ArN₂BF₄ (1.2 equiv.), MTBE (0.025 M).

^cIsolated yield.

^dEnantiomeric excess determined by chiral phase HPLC.