1: 78 percent / conc. HCl / 4 h / Heating 2: 75 percent / SOCl2 / 2 h / Heating 3: 77 percent / POCl3, DMF / 2 h / Heating 4: 9 percent / MCPBA / 1,2-dichloro-ethane / 39 h / 65 °C 5: 67 percent / K2CO3 / H2O / 2 h / Ambient temperature 6: 30 percent / 1 N NaOH / 2 h / Heating View Scheme

1: 77 percent / nitrobenzene / 3 h / 170 - 180 °C 2: 33 percent / 10percent NaOH / 3 h / Heating 3: 75 percent / SOCl2 / 2 h / Heating 4: 77 percent / POCl3, DMF / 2 h / Heating 5: 9 percent / MCPBA / 1,2-dichloro-ethane / 39 h / 65 °C 6: 67 percent / K2CO3 / H2O / 2 h / Ambient temperature 7: 30 percent / 1 N NaOH / 2 h / Heating View Scheme

1: 33 percent / 10percent NaOH / 3 h / Heating 2: 75 percent / SOCl2 / 2 h / Heating 3: 77 percent / POCl3, DMF / 2 h / Heating 4: 9 percent / MCPBA / 1,2-dichloro-ethane / 39 h / 65 °C 5: 67 percent / K2CO3 / H2O / 2 h / Ambient temperature 6: 30 percent / 1 N NaOH / 2 h / Heating View Scheme

1: 75 percent / SOCl2 / 2 h / Heating 2: 77 percent / POCl3, DMF / 2 h / Heating 3: 9 percent / MCPBA / 1,2-dichloro-ethane / 39 h / 65 °C 4: 67 percent / K2CO3 / H2O / 2 h / Ambient temperature 5: 30 percent / 1 N NaOH / 2 h / Heating View Scheme

1: 9 percent / MCPBA / 1,2-dichloro-ethane / 39 h / 65 °C 2: 67 percent / K2CO3 / H2O / 2 h / Ambient temperature 3: 30 percent / 1 N NaOH / 2 h / Heating View Scheme

1: 77 percent / POCl3, DMF / 2 h / Heating 2: 9 percent / MCPBA / 1,2-dichloro-ethane / 39 h / 65 °C 3: 67 percent / K2CO3 / H2O / 2 h / Ambient temperature 4: 30 percent / 1 N NaOH / 2 h / Heating View Scheme

1: 67 percent / K2CO3 / H2O / 2 h / Ambient temperature 2: 30 percent / 1 N NaOH / 2 h / Heating View Scheme

sodium hydroxide 2 h; Heating;