反应条件
1: 78 percent / sulfur trioxide pyridine, triethylamine, dimethylsulfoxide / toluene / 0.33 h / Ambient temperature 2: TiCl4, molecular sieves / CH2Cl2 / 1 h / -78 °C 3: 93 percent / aq. HCl / ethyl acetate / 13 h / 100 °C View Scheme
参考文献
Takemoto, Yoshiji; Matsumoto, Teruyo; Ito, Yoshio; Terashima, Shiro
Tetrahedron Letters, 1990 , vol. 31, # 2 p. 217 - 218
