Table 2. Scope of the Reaction with Various Borate and Silane Nucleophiles^a,b,c.

^aReactions performed with 1a (0.5 mmol), nucleophile 2 (0.6 mmol), HFIP (2.0 mL), and BAC-1 (0.05 mmol) at rt for 16 h.

^bIsolated yields.

^cCrude residue was purified by flash chromatography; see Supporting Information for details.

^dReaction performed on a 1.0 g scale (benzhydryl alcohol); see Supporting Information for details.

^eA complex mixture of products was obtained as determined by the ¹H NMR spectrum of the crude material.