1: palladium 10 on activated carbon; hydrogen / methanol / 30 °C / 760.05 Torr 2: pyridine / 72 h / 20 °C View Scheme

1.1: triethylamine / acetonitrile / 6 h / 70 °C 1.2: 14 h / 20 °C 2.1: palladium 10 on activated carbon; hydrogen / methanol / 30 °C / 760.05 Torr 3.1: pyridine / 72 h / 20 °C View Scheme

1.1: pyridine / acetonitrile / 21 h / 5 °C 2.1: triethylamine / acetonitrile / 6 h / 70 °C 2.2: 14 h / 20 °C 3.1: palladium 10 on activated carbon; hydrogen / methanol / 30 °C / 760.05 Torr 4.1: pyridine / 72 h / 20 °C View Scheme

pyridine T=20°C; 72 h;