Table 3. Enantioselective Sulfenylation of Various Silyl Enol Ethers.

^aYield of isolated, analytically pure product. All reactions were carried out on a 1.0 mmol scale.

^bThe enantiomeric ratio was determined by CSP-SFC analysis or CSP-HPLC analysis, as required.

^c10 mol % Lewis base was used in this instance.

^d% conversion determined by GC analysis using biphenyl as an internal standard.

^eAfter one recrystallization from MeOH.