1.1: benzotriazol-1-ol / dichloromethane / 0.17 h 1.2: 4 h / Inert atmosphere 2.1: hydrogen / palladium-on-charcoal / water; tetrahydrofuran / 20 °C / 760.05 Torr View Scheme

1.1: 1,1'-carbonyldiimidazole / tetrahydrofuran / 0.17 h / 0 °C / Inert atmosphere 1.2: Reflux 2.1: hydrogen / palladium 10 on activated carbon / tetrahydrofuran / 20 °C / 760.05 Torr View Scheme