反应条件
1: concd. H2SO4 / methanol 2: SOCl2, DMF / toluene / 0.5 h / Heating 3: NaN3 / acetone; H2O / 1 h 4: 1.5 h / Heating 5: 85 percent / K2CO3 / acetonitrile / 4 h / Heating 6: 77 percent / 30percent ethanolic HCl / ethyl acetate / 1 h / Ambient temperature 7: 1.) FeCl3*6H2O, activated carbon, 2.) hydrazine monohydrate / 1.) MeOH, THF, reflux, 30 min, 2.) MeOH, THF, reflux, 14 h 8: 78 percent / ethanol / 1.5 h / Heating View Scheme
参考文献
Kubo, Keiji; Kohara, Yasuhisa; Imamiya, Eiko; Sugiura, Yoshihiro; Inada, Yoshiyuki; et al.
Journal of Medicinal Chemistry, 1993 , vol. 36, # 15 p. 2182 - 2195
