反应条件
1: 1.) acetic anhydride, 2.) 10percent aq. NaOH / 1.) acetic anhydride, 70 deg C, 2 h, 2.) from 20 to 70 deg C, 1 h 2: NaNO2, AcOH / H2O / 2 h / Ambient temperature 3: Na2S2O4, 25percent aq. NH4OH / 20 - 50 °C 4: 2.) 2.2 M aq. NaOH / 1.) reflux, 2 h, 2.) reflux, 45 min View Scheme
参考文献
Merlos; Gomez; Vericat; Bartroli; Garcia-Rafanell; Forn
European Journal of Medicinal Chemistry, 1990 , vol. 25, # 8 p. 653 - 658