反应条件
1: 87 percent / Br2, Ag2SO4, cc H2SO4, / 1 h 2: 68 percent / H2, / PtO2, / acetic acid / Ambient temperature 3: 2.) PPA, 3.) cc HCl, / 1.) 150 deg C, 1 h, 2.) 150 deg C, 30 min, 3.) AcOH, H2O, reflux, 2 h, 4: 25 percent / hexamethylphosphoric acid triamide / 7 h / 160 °C View Scheme
参考文献
Chemical and Pharmaceutical Bulletin, , vol. 37, # 8 p. 2103 - 2108
