1: 60 percent / [(t-Bu)3PH]BF4; Cy2NMe / Herrmann's palladacycle / dimethylformamide; H2O / 1 h / 160 °C / microwave irradiation 2: 79 percent / ammonium formate / Pd on carbon / ethanol / 0.67 h / 80 °C / microwave irradiation 3: 50 percent / H2SO4; sodium nitrite; urea / H2O / 1 h / Heating 4: NaOH / ethanol / 8 h / Heating View Scheme

1: 60 percent / [(t-Bu)3PH]BF4; Cy2NMe / Herrmann's palladacycle / dimethylformamide; H2O / 1 h / 160 °C / microwave irradiation 2: 79 percent / ammonium formate / Pd on carbon / ethanol / 0.67 h / 80 °C / microwave irradiation 3: 50 percent / H2SO4; sodium nitrite; urea / H2O / 1 h / Heating View Scheme