potassium hydroxide in ethanol T=0°C;

potassium hydroxide

potassium hydroxide

1.1: Mg; mercury(II) chloride / diethyl ether / 0.5 h / Heating 1.2: 78 percent / diethyl ether / 0.33 h / -80 °C 2.1: 86 percent / imidazole / dimethylformamide / 24 h / 20 °C 3.1: n-BuLi / tetrahydrofuran / 0.33 h / -80 °C 3.2: 68 percent / HMPA / tetrahydrofuran / 0 °C 4.1: 99 percent / nBu4NF / tetrahydrofuran / 3 h / 45 °C View Scheme