a Reactions were carried out on a 50 mg scale at 0.19 mmol of (Ss)-1a. b The diastereoisomeric ratio was determined by 1H NMR of the crude product. c The yield was determined by 1H NMR analysis of the crude product using CH2Br2 as an internal standard.
a Reactions were carried out on a 50 mg scale at 0.19 mmol of (Ss)-1a.b The diastereoisomeric ratio was determined by 1H NMR of the crude product.c The yield was determined by 1H NMR analysis of the crude product usingCH2Br2 as an internal standard.