反应条件
1: chlorosulfuric acid / 1) 120 deg C, 1 h 2) 150 deg C, 2 h 2: 94 percent / SOCl2 / benzene / 8 h / Heating 3: 71 percent / KF, Ph4PBr / acetonitrile / 16 h / Heating 4: 45 percent / KF, PPh4Br / tetrahydrothiophene 1,1-dioxide; toluene / 210 °C / 270 Torr 5: 82 percent / 25 aq. NH3 / H2O / 2 h 6: 65 percent / Br2, aq. KOH / H2O / 1 h / 0 - 88 °C View Scheme
参考文献
Bulletin of the Chemical Society of Japan, , vol. 63, # 7 p. 2010 - 2017
