反应条件
1: 48 percent / EtNO2, 34percent HBF4
2: 1) (i-Pr)2NLi, 2) I2 / 1) THF, hexane, -75 deg C, 4 h, 2) THF, -75 deg C, 1 h
3: 1) K2CO3 / 2) Pd(PPh3)4 / 1) EtOH, toluene, 0.5 h, 2) reflux, 48 h
4: 78 percent / Pd(PPh3)4 / toluene / 60 h / Heating
5: 83 percent / pyridinium chloride / 0.25 h / 210 °C
View Scheme
参考文献
Rocca; Marsais; Godard; Queguiner
Tetrahedron, 1993 , vol. 49, # 16 p. 3325 - 3342
