反应条件
1: NH2OH*HCl, AcONa / methanol 2: CHCl3 / isomerization 3: 82 percent / NaH / dimethylformamide 4: 76 percent / KOH / dimethylsulfoxide; tetrahydrofuran 5: H2 / catalytic hydrogenation 6: HCOOH / ethanol / Heating 7: 68 percent / Na2S2 / aq. ethanol / Heating View Scheme
参考文献
Heterocycles, , vol. 31, # 12 p. 2121 - 2124