1: 83 percent / POCl3, N,N-diethylaniline / 13 h / 107 °C 2: 51.5 percent / NaOH / ethanol / 4 h / Heating 3: 80 percent / 30percent aq. NaOH / ethanol / 0.03 h / Heating 4: 32 percent / ethanol / 7 h / Heating View Scheme

1: 80 percent / 30percent aq. NaOH / ethanol / 0.03 h / Heating 2: 32 percent / ethanol / 7 h / Heating View Scheme

1: 51.5 percent / NaOH / ethanol / 4 h / Heating 2: 80 percent / 30percent aq. NaOH / ethanol / 0.03 h / Heating 3: 32 percent / ethanol / 7 h / Heating View Scheme

in ethanol 7 h; Heating;