STUDIES ON THE DIASTEREO- SELECTIVE REDUCTION OF 2-ACETYL-2-ALKYL- γ-BUTYROLACTONES WITH BORON HYDRIDES*
摘要:
Reduction of 2-acetyl-2-alkyl-gamma-butyrolactone derivatives with boron hydrides in the presence and absence of several chelating agents were studied. This process is influenced more by steric than chelation factors, yielding the isomeric alcohols syn (13-23) and anti (14-24) in good diastereomeric excess.