反应条件
1: 1) LDA, 2) bromine / 1) THF, -75 deg C, 4 h, 2) -75 deg C, 0.5 h 2: 1) n-BuLi, TMEDA / 1) Et2O, -60 deg C, 0.5 h, 2) Et2O, -75 deg C, 2 h 3: 85 percent / MnO2 / toluene / 12 h / Heating 4: 65 percent / PTSA / toluene / 24 h / Heating 5: 1) LDA, 2) iodine / 1) THF, -75 deg C, 4 h, 2) THF, -75 deg C, 3 h View Scheme
参考文献
Marsais; Pineau; Nivolliers; Mallet; Turck; Godard; Queguiner
Journal of Organic Chemistry, 1992 , vol. 57, # 2 p. 565 - 573
