1: 88.8 percent / 10percent aq. HCl / ethanol / 20 h / Heating 2: 1) 0.5 M MeONa, 2) TiCl3, NaOAc / 1) MeOH, 23 deg C, 10 min 2) aq. MeOH, 4 h View Scheme

1: 88.8 percent / 10percent aq. HCl / ethanol / 20 h / Heating 2: 1) 0.5 M MeONa, 2) TiCl3, NaOAc / 1) MeOH, 23 deg C, 10 min 2) aq. MeOH, 4 h 3: 59.1 percent / NH2OH*HCl / ethanol / 20 h / 165 °C View Scheme