反应条件
1: 66 percent / conc. H2SO4 / 3 h 2: 66 percent / pyridine / 1 h / 0 °C 3: DMAP / acetonitrile / 2 h / Ambient temperature 4: 72 percent / AIBN, Bu3SnH / toluene / 6 h / 80 °C 5: HCOOH / 2 h / 50 °C 6: pyridine / 2 h / Ambient temperature 7: 1.) hexamethyldisilazane, (NH4)2SO4, 2.) trimethylsilyl triflate / 1.) reflux, 1,2-dichloroethane, RT, 1.5 h 8: 72 percent / NaOEt / 24 h / Ambient temperature 9: 77 percent / methanol / 4 h / Heating View Scheme
参考文献
Rhie; Pfleiderer
Nucleosides and Nucleotides, 1994 , vol. 13, # 6-7 p. 1425 - 1452
