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 View Scheme

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: 57.4 percent / CHCl3 / 16 h / Heating View Scheme

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: 83 percent / POCl3, N,N-diethylaniline / 13 h / 107 °C 2: 58 percent / H2O; acetonitrile / 1 h / 20 °C View Scheme

1: 83 percent / POCl3, N,N-diethylaniline / 13 h / 107 °C 2: 58 percent / H2O; acetonitrile / 1 h / 20 °C 3: 72 percent / 1 N aq. NaOH / ethanol / 0.08 h / 60 °C View Scheme

N,N-diethylaniline; trichlorophosphate T=107°C; 13 h;