sulfuric acid T=45°C; 0.116667 h;

1: 71 percent / 2.5 M aq. NaOH / tetrahydrofuran / 48 h / Heating 2: 8.4 percent / conc. sulfuric acid / 0.12 h / 45 °C View Scheme

1: 1) n-BuLi, 2) iodine / 1) THF, hexane, -78 deg C, 1 h, then up to RT, 3 h, 2) -78 deg C up to RT, 18 h 2: 8.4 percent / conc. sulfuric acid / 0.12 h / 45 °C View Scheme