反应条件
1: 1.) NaH / 1.) DME, 25 deg C, 2.) DME, reflux, 26 h
2: aq. H2SO4 / acetic acid / 20 h / Heating
3: p-toluenesulfonic acid / benzene / 7 h / Heating
4: 28.6 g / p-toluenesulfonic acid / benzene / Heating
5: Br2, CaCO3 / CHCl3; CCl4 / 0.5 h / 5 °C
6: 72 percent / LiBr2, Li2CO3 / dimethylformamide / 0.5 h / Heating
View Scheme
参考文献
Holland; Ratemi; Contreras
Canadian Journal of Chemistry, 1994 , vol. 72, # 1 p. 1 - 5