反应条件
1: 92 percent / potassium t-butoxide / tetrahydrofuran; dimethylformamide / 1.) -20 deg C, 1 h, 2.) 20 deg C, 1 h 2: 80.4 percent / ethyl alcohol, sodium / tetrahydrofuran / 12 h 3: 48 percent hydrobromic acid / propan-2-ol / 3 h / 50 °C 4: air / propan-2-ol / 3 h / 25 °C View Scheme
参考文献
Bulletin of the Chemical Society of Japan, , vol. 55, # 4 p. 1325 - 1326
