sulfuric acid; nitric acid T=-25 - 0°C;

1: sodium methylate / methanol 2: hydrogen 3: pyridine / CHCl3 4: 75 percent / LiAlH4 / tetrahydrofuran / 0 °C 5: 80 percent / pyridinium chlorochromate / CH2Cl2 View Scheme

sodium methylate in methanol T=55 - 60°C; 1 h;