Table 2. Steric Factors Determining the Distribution of 3 and 4.

^aMethod A: 5% (IMes)AuCl/AgSbF₆, CH₂Cl₂, rt. Method B: 5% (p-CF₃−C₆H₄)₃PAuCl/ AgSbF₆, toluene, 0 °C.

^bIsolated yield after column chromatography.

^c2 equiv of alcohol was used.

^d4 equiv of alcohol was used.

^edr = 1.3:1.

^fSee the text.