反应条件
1: 74 percent / conc. H2SO4 / Heating 2: 81 percent / H2 / 5percent Pd/C / ethanol / 4 h 3: 1) NaNO2/HCl, 2) KI, I2 / acetic acid, H2O, 1) 45 min., 2) 2.1) < 10 deg C, 2.5 h, 2.2) RT, overnight 4: 81 percent / KOH / aq. ethanol / Heating View Scheme
参考文献
Journal of Medicinal Chemistry, , vol. 32, # 9 p. 2104 - 2110