反应条件
1: 86 percent / Amberlyst-15 / benzene / 12 h / Heating 2: 1.) NaH, 2.) DMAP / 1.) THF, 0 deg C, 2.) THF, 0 deg C to room temp., 20 h 3: 70 percent / K2CO3, CuO / dimethylformamide / 1.5 h / Heating 4: 58 percent / TMEDA, sec-BuLi / tetrahydrofuran; cyclohexane / -78 deg C to room temp., then overnight View Scheme
参考文献
Danishefsky; Lee
Journal of the American Chemical Society, 1989 , vol. 111, # 13 p. 4829 - 4837
