Table 2. Assessment of Phosphetane-Catalyzed Allylic Reductiona.
See Supporting Information for full experimental details. Isolated yields are reported unless otherwise stated. Ratios (γ:α) determined by 1H NMR integration unless otherwise stated.
Determined by GC analysis.
Reaction time 10 h due to thermal instability of substrate.
TBDPS = tert-butyldiphenylsilyl.
TBS = tert-butyldimethylsilyl.
d.r. and relative stereochemistry of major isomer determined after TBS deprotection.