water; sodium hydroxide in ethanol Heating;

1: 41 percent / polyphosphoric acid / 720 h / Ambient temperature; homogenization at 50 deg C at the beginning of the reaction 2: 83 percent / NaOH / H2O / Heating View Scheme

1: 17.5 percent / AlCl3 / CS2 / 1 h / Ambient temperature 2: 83 percent / NaOH / H2O / Heating View Scheme

1: 41 percent / polyphosphoric acid / 720 h / Ambient temperature; homogenization at 50 deg C at the beginning of the reaction 2: 83 percent / NaOH / H2O / Heating View Scheme