1: 68 percent / N2H4*H2O / methanol / 8 h / Heating 2: 1.) KOH / 1.) EtOH, reflux, 1 h, 2.) EtOH, reflux, 6 h View Scheme

1: 69 percent / K2CO3 / acetone / 40 h / Heating 2: 68 percent / N2H4*H2O / methanol / 8 h / Heating 3: 1.) KOH / 1.) EtOH, reflux, 1 h, 2.) EtOH, reflux, 6 h View Scheme

potassium hydroxide 1.) EtOH, reflux, 1 h, 2.) EtOH, reflux, 6 h; Yield given. Multistep reaction;