反应条件
1: 56 percent
2: p-toluenesulfonic acid / Heating
3: 1) CaCO3, Br2, 2) Li2CO3, / 1) CCl4, water, 0-5 deg C, 30 min, 2) DMF, 30 min, reflux
4: 95.8 percent / pyridine; ethanol / 22 h / Ambient temperature
5: 2N HCl / acetone / 5 h / Heating
View Scheme
参考文献
Bernady; Poletto; Nocera; et al.
Journal of Organic Chemistry, 1980 , vol. 45, # 23 p. 4702 - 4715
