反应条件
1: 1.) BuLi, 2.) t-BuOK, 3.) LiBr / 1.) THF-hexane, -30 deg C, 2.) -90 deg C, 15 min, -80 deg C, 1 h, 3.) -20 deg C -> 5 deg C, -5 deg C, 10 min
2: S / tetrahydrofuran; hexane / 2 h / 35 °C
3: t-BuOH / tetrahydrofuran; hexane / 2 h / 35 °C
View Scheme
参考文献
Hanecamp, Jaap C.; Klusener, Peter A. A.; Brandsma, Lambert
Synthetic Communications, 1989 , vol. 19, # 15 p. 2691 - 2702