反应条件
1: 1.) O3, 2.) Me2S, TsOH / 1.) -78 deg C, 2.) RT, 3 h 2: 1.) BuLi, 4A molecular sieve, SiO2 / 1.) DME, hexane, -78 deg C, 30 min, 2.) DME, hexane, a) -78 deg C, 30 min, b) reflux, overnight 3: 96 percent / TsOH / acetone / 4 h / 50 °C 4: 81 percent / TiCl4, Zn / 1,2-dimethoxy-ethane / 3 h / Ambient temperature View Scheme
参考文献
Yue, Xiangjun; Li, Yulin
Synthesis, 1996 , # 6 p. 736 - 740
