1: 87 percent / NaOH / H2O / 1) RT, 3 h; 2) reflux, 5 min 2: 70 percent / POCl3 / dimethylaniline 3: 98 percent / Na / Ambient temperature View Scheme

sodium Ambient temperature;

1: 70 percent / POCl3 / dimethylaniline 2: 98 percent / Na / Ambient temperature View Scheme