1: 60.5 g / aq. NaOH / methanol / 1 h / Heating 2: 89 percent / POCl3, N,N-dimethylaniline / 2 h / 150 °C View Scheme

sodium hydroxide in methanol 1 h; Heating;

1: 60.5 g / aq. NaOH / methanol / 1 h / Heating 2: 89 percent / POCl3, N,N-dimethylaniline / 2 h / 150 °C 3: 96 percent / NaBH4 / CHCl3; ethanol / 1.) 0 deg C, 2.) room temperature, 1 h 4: 84 percent / potassium carbonate / butan-2-one / Heating View Scheme