1: 96 percent / dimethylformamide / 0.42 h / 180 °C / microwave irradiation 2: 80 percent / H2 / Pd/C / ethyl acetate / 17 h 3: 79 percent / Fremy's salt; sodium hydrogen phosphate buffer / acetone / 3 h View Scheme

1: 96 percent / dimethylformamide / 0.42 h / 180 °C / microwave irradiation 2: 80 percent / H2 / Pd/C / ethyl acetate / 17 h View Scheme