1.1: potassium bis(trimethylsilyl)amide / tetrahydrofuran / 0.5 h / -78 °C 1.2: 75 percent / HMPA; acetic acid / tetrahydrofuran 2.1: H2 / Pd(OH)2/C / methanol; H2O / 24 h / 20 °C / 3750.3 Torr View Scheme

hydrogen; palladium dihydroxide in methanol; water T=20°C; P=3750.3 Torr; 24 h;

1: 81 percent / potassium bis(trimethylsilyl)amide; HMPA / tetrahydrofuran / 2 h / -78 - -70 °C 2: H2 / Pd(OH)2/C / methanol; H2O / 24 h / 20 °C / 3750.3 Torr View Scheme