hydrogen; triethylamine; palladium dihydroxide in ethanol T=20°C; P=2585.74 Torr; 8 h;

1: NCS / dimethylformamide / 72 h / 20 °C 2: 18.45 g / HNO3; AcOH; Ac2O / 18 h / 20 °C 3: 98 percent / Et3N; H2 / Pd(OH)2/C / ethanol / 8 h / 20 °C / 2585.74 Torr View Scheme

1: 18.45 g / HNO3; AcOH; Ac2O / 18 h / 20 °C 2: 98 percent / Et3N; H2 / Pd(OH)2/C / ethanol / 8 h / 20 °C / 2585.74 Torr View Scheme

acetic acid; isopentyl nitrite 1.5 h;