Fig. 6: Substrate scope of hydrogenation over the Co1/NPC catalyst.

Reaction conditions: 1 mmol nitroarenes; 10 mL EtOH; 5 mg catalyst; 110 °C; 3 MPa H2. †EtOH/H2O, v-v = 4:1, 10 mL; §H2, 2 MPa; ‡temperature, 120 °C. In all cases, complete conversions of nitroarenes were observed.