Table 2. (A–F) Substrate Scope for the Hydrogenation of Aryl Germane Derivatives Using Nishimura’s Catalyst (4) under Optimized Reaction Conditions and Reaction Condition-Based Sensitivity Assessmenta.
Reaction conditions: 5 (0.2 mmol), H2 (80 bar), 4 (5 mol %, based on total metal loading), T = 50 °C, TFE (1.5 mL), and reaction time (t) = 40 h; the diastereomeric ratio was determined by GC analysis.
GC yield was reported because of the low boiling point of the products.
t = 60 h.
t = 32 h.
t = 24 h.
NMR yield was reported because of difficult isolation.
Yb(OAc)3·4H2O (10 mol %) was used.