Reversal Phenomenon of Reaction Velocity in a Mixed Reaction System: Silylations between Simple Alcohols and α- or β-Hydroxyketones Using Anilinosilanes and Catalytic TBAF Agent
We encountered a unique phenomenon of reaction velocity reversal during the silylation between mixed simple alcohols (A; AOH) and α- or β-hydroxyketones (B; BOH). The present reaction system using anilinosilanes 1a [PhNH(TMS)] (TMS-A) and 1b [PhNH(TES)] (TES-A) with the catalytic TBAF (0.02 equiv) reagent showed that the order of silylation−velocity between the independent system and the mixed system