Fig. 2: Substrate scope.

aGeneral reaction conditions: NaHMDS (0.4 mmol, 2 M in THF), propargyl alcohol (0.2 mmol), HBpin (0.4 mmol), THF (2 ml), room temperature, 6 h, then quenching with aqueous NH4Cl solution. bIsolated yield. cNaHMDS (0.24 mmol), HBpin (0.2 mmol), 0 °C, 12 h. A The scope of tertiary allylic alcohols. B The scope of secondary and primary allylic alcohols. C The scope of conjugated enyne and diene subsets.