反应条件
1: 88 percent / p-toluenesulfonic acid / 16 h / Heating 2: 88 percent / NaH / 1,2-dimethoxy-ethane / 2 h / Ambient temperature 3: 50 percent / LiHBEt3 / 1,2-dimethoxy-ethane / 1 h View Scheme
参考文献
Journal of Organic Chemistry, , vol. 47, # 11 p. 2043 - 2047