反应条件
1: 1) NaNO2, AcOH 2) Zn dust, AcOH / 1) H2O, 25 deg C, overnight 2) reflux, 24 h
2: 82 percent / KOH, NH2NH2*H2O / bis-(2-hydroxy-ethyl) ether / 3 h / Heating
3: 1) 30percent H2O2 2) K2CO3 / 1a) MeOH/H2O, 50 deg C, 2 h b) reflux, 2 h 2) H2O, overnight
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