反应条件
1: 70 percent / H2SO4 conc. / 10 h / Heating 2: 84 percent / Ba(OH)2*8H2O / methanol / Ambient temperature 3: 80 percent / Pb(OAc)4, Cu(OAc)2 / pyridine; benzene / 2 h / Heating 4: 1.) SeO2, TBHP, 2.) Me2S / 1.) CH2Cl2, 25 deg C, 30 h, 2.) AcOH, 4h 5: 1.) diborane, 2.) NaOAc, 30percent H2O2 / 1.) THF, 25 deg C, 2 h, 2.) THF-H2O, 25 deg C, 2 h 6: 80 percent / Et3N / CH2Cl2 / 0 deg C, 0.5 h; RT, 3 h 7: 70 percent / Na2S*H2O, S / dimethylformamide / 24 h / 90 °C 8: 0.120 g / KOH / methanol / 24 h / Ambient temperature View Scheme
参考文献
Synthetic Communications, , vol. 17, # 11 p. 1339 - 1348
