反应条件
1: 73 percent / 48 percent HBr (aq.), acetic anhydride / 120 h / Heating
2: 92 percent / P2S5 / pyridine / 48 h / Heating
3: 70 percent / methanolic sodium methoxide / 24 h / 60 °C
4: 52 percent / 1M potassium tert-butoxide / dimethylformamide / 0.5 h / Ambient temperature
View Scheme
参考文献
Johnsen, Bjoern A.; Undheim, Kjell
Acta Chemica Scandinavica, Series B: Organic Chemistry and Biochemistry, 1984 , vol. 38, # 2 p. 109 - 112
