反应条件
1: 90 percent / p-TsOH / diethyl ether / Ambient temperature 2: 80 percent / liq. NH3, HMPA / 1) -70 deg C, 3h, 2) RT, overnight 3: 1) n-BuLi / 1a) Et2O, cyclohexane, 0 deg C, 1h, 1b) RT, 30 min, 2a) 1h, 0 deg C, 2b) 1h, RT 4: 90 percent / p-TsOH / methanol / Ambient temperature 5: NEt3 / CH2Cl2 / 1) 0 deg C, 30 min, 2) RT, 2h 6: 73 percent / LiBr / tetrahydrofuran / 2 h / Heating 7: 1) Mg / 1) Et2O, 2) Et2O, RT, overnight 8: 90 percent / Bu4NF / tetrahydrofuran / 0.17 h / Ambient temperature 9: p-TsOH / methanol / 10 h / Ambient temperature View Scheme
参考文献
Becker, D.; Sahali, Y.; Raviv, M.
Phytochemistry (Elsevier), 1990 , vol. 29, # 7 p. 2065 - 2067
