Table 2.

Arylboration of various alkenes.

Yield reported as the average of at least two experiments. Diastereomeric ratio (d.r.) was determined by ¹H NMR spectroscopic analysis of the unpurified reaction mixture. Enantiomeric ratio (e.r.) was determined by high performance liquid chromatography (HPLC) analysis (with a chiral column) of the purified products.

^[a]Yield determined by ¹H NMR analysis with an internal standard.

^[b]5 mol% copper catalyst (4) was added in two portions (see the Supporting Information for details).

^[c]KOSiMe₃ was used instead of NaOtBu.