Fig. 1. Properties of acetyl donors. (a) Chemical structures of the catalysts and acetyl donors. (b) Screening of acetyl donors. The pKa value of each leaving group conjugate acid is shown in parentheses. (c) Comparison of NMD and Ac-5 using 7 (
) and 8 (■) at 30 °C. The average and SD (bars) are indicated (n = 3 independent experiments).
