1: 84 percent / hydrogen / 10percent palladium on carbon / tetrahydrofuran; ethanol / 3 h / 760 Torr 2: 88 percent / hydrogen / 10percent palladium on carbon / ethanol / 15 h / 3040 Torr View Scheme

pyridine; hydrogen; palladium on activated charcoal 24 h; Ambient temperature; Yield given. Yields of byproduct given;