acetic acid; potassium nitrate T=60°C; 1.16667 h; Inert atmosphere;

1: With sulfuric acid; nitric acid T=-20 - -10°C; 0.5 h; Inert atmosphere; 2: in water T=-10 - 5°C; 0.5 h; Inert atmosphere; 3: in methanol; water 48 h; Inert atmosphere;

acetic acid; potassium nitrate T=20 - 60°C;

10 palladium on activated charcoal; hydrogen in ethanol T=30°C; P=2250.23 Torr; 2 h;

1.1: potassium carbonate / dimethyl sulfoxide / 20 h / 20 °C 2.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / 0 °C 2.2: 15 h / 0 - 20 °C 3.1: [Rh(CO)2(Me2NCH2CH2NMe2)][RhCl2(CO)2]; carbon monoxide / tetrahydrofuran / 20 h / 100 °C / 5171.62 Torr / Autoclave View Scheme

1: aqueous NaOH 2: iron-powder; aqueous acetic acid View Scheme

potassium carbonate in dimethyl sulfoxide T=20°C; 20 h;

sodium hydroxide