carbon dioxide; potassium hydrogencarbonate T=275°C; P=18387.7 Torr;

manganese(IV) oxide in tetrachloromethane 5 h;

antimony trichloride T=145°C;

1: 75 percent / pyridine / 0 - 5 °C 2: 40 percent / AlCl3 / nitrobenzene / 0 - 5 °C 3: methanol 4: NaBH4 / methanol 5: pyridine / benzene 6: various solvent(s) / 6 h / Heating 7: 25 percent / LiAlH4 / tetrahydrofuran / 1.) 3 h, room temp., 2.) 8 h, reflux View Scheme