反应条件
1: 98.1 percent / DMAP / CH2Cl2 / 4 h / 40 °C 2: aq. K2CO3 / methanol / Ambient temperature 3: 88.9 percent / 80percent aq. CF3COOH / 3 h / Ambient temperature 4: 2.) p-toluenesulfonic acid / 1.) toluene, reflux, 30 min, 2.) toluene, reflux, 3 h View Scheme
参考文献
Tetrahedron Asymmetry, , vol. 9, # 13 p. 2285 - 2291
