1: H2 / Raney-nickel / tetrahydrofuran; ethanol / 24 h / 735.5 Torr / Ambient temperature 2: 88 percent / trifluoracetic acid / H2O / 48 h / Ambient temperature View Scheme

With  hydrogen; nickel in  tetrahydrofuran; ethanol P=735.5 Torr; 24 h;  Ambient temperature;  Yield given;