反应条件
1: 50 percent / conc. aq. H2SO4 / methanol / 19 h / Heating 2: 1.) n-BuLi / 1.) THF, hexane, -78 deg C, 15 min, 2.) THF, hexane, a) from -78 deg C to 0 deg C, 2.5 h, b) RT, 0.5 h 3: 87 percent / formic acid / 1.5 h / 80 °C View Scheme
参考文献
Synthetic Communications, , vol. 23, # 14 p. 1967 - 1971