反应条件
1: 70 percent / PDC / dimethylformamide / 72 h / Ambient temperature 2: 1.) CH3CHO, SmI2, 2.) NaOMe / 1.) THF, -10 deg C, 2 h, 2.) CH2Cl2, CH3OH, 12 h 3: 75 percent / pyridine / -30 °C 4: 80 percent / BF3*Et2O / methanol / Ambient temperature View Scheme
参考文献
Tetrahedron: Asymmetry, , vol. 5, # 11 p. 2195 - 2208