“…Reactions were generally run 0.5-2 h at ~22 °C. For isolation, the methanol was removed under vacuum and the residue was treated with acetonitrile to dissolve the alkyltrifluoroborates (15), DICHED (10), and any unchanged boronic ester 7, leaving the excess unchanged potassium bifluoride (12) were not so thoroughly tested, but with R 1 = Ph or (R)-4-azido-1-phenylbutyl, conversions were ~70 % [11]. The efficient recovery of the valuable chiral diol is a significant advantage of the potassium bifluoride reaction.…”