N,N-dimethyl-formamide in tetrahydrofuran T=20°C; 2 h;

1: 72 percent / triethylamine / benzene 2: 29 percent / phosphoryl chloride / 2 h / Heating 3: 92 percent / NaOH / ethanol; H2O / 2 h / Heating 4: 93 percent / sodium carbonate, H2 / 5percent Pd/C / H2O / 1520 Torr / Ambient temperature 5: thionyl chloride / Heating View Scheme

1: 29 percent / phosphoryl chloride / 2 h / Heating 2: 92 percent / NaOH / ethanol; H2O / 2 h / Heating 3: 93 percent / sodium carbonate, H2 / 5percent Pd/C / H2O / 1520 Torr / Ambient temperature 4: thionyl chloride / Heating View Scheme

1: 92 percent / NaOH / ethanol; H2O / 2 h / Heating 2: 93 percent / sodium carbonate, H2 / 5percent Pd/C / H2O / 1520 Torr / Ambient temperature 3: thionyl chloride / Heating View Scheme

1: 94 percent / sodium carbonate, KMnO4 / H2O / 1 h / 60 °C 2: 93 percent / sodium carbonate, H2 / 5percent Pd/C / H2O / 1520 Torr / Ambient temperature 3: thionyl chloride / Heating View Scheme

1: 93 percent / sodium carbonate, H2 / 5percent Pd/C / H2O / 1520 Torr / Ambient temperature 2: thionyl chloride / Heating View Scheme

thionyl chloride Heating;