toluene-4-sulfonic acid in toluene 3 h; Heating;

1: 75 percent / KOH, H2O / ethanol / 20 h / Heating 2: HCl(g) / 0.5 h 3: SOCl2 / CH2Cl2 / Ambient temperature 4: BBr3 / CH2Cl2 / 1 h / Ambient temperature 5: 2 N ethanol. NaOH / 4 h / Ambient temperature 6: p-toluenesulfonic acid / toluene / 3 h / Heating View Scheme

1: 91 percent / S / 6 h / Heating 2: 75 percent / KOH, H2O / ethanol / 20 h / Heating 3: HCl(g) / 0.5 h 4: SOCl2 / CH2Cl2 / Ambient temperature 5: BBr3 / CH2Cl2 / 1 h / Ambient temperature 6: 2 N ethanol. NaOH / 4 h / Ambient temperature 7: p-toluenesulfonic acid / toluene / 3 h / Heating View Scheme

1: 69 percent / SnCl4 / CH2Cl2 / 20 h / Ambient temperature 2: 91 percent / S / 6 h / Heating 3: 75 percent / KOH, H2O / ethanol / 20 h / Heating 4: HCl(g) / 0.5 h 5: SOCl2 / CH2Cl2 / Ambient temperature 6: BBr3 / CH2Cl2 / 1 h / Ambient temperature 7: 2 N ethanol. NaOH / 4 h / Ambient temperature 8: p-toluenesulfonic acid / toluene / 3 h / Heating View Scheme

1: HCl(g) / 0.5 h 2: SOCl2 / CH2Cl2 / Ambient temperature 3: BBr3 / CH2Cl2 / 1 h / Ambient temperature 4: 2 N ethanol. NaOH / 4 h / Ambient temperature 5: p-toluenesulfonic acid / toluene / 3 h / Heating View Scheme

1: SOCl2 / CH2Cl2 / Ambient temperature 2: BBr3 / CH2Cl2 / 1 h / Ambient temperature 3: 2 N ethanol. NaOH / 4 h / Ambient temperature 4: p-toluenesulfonic acid / toluene / 3 h / Heating View Scheme

1: BBr3 / CH2Cl2 / 1 h / Ambient temperature 2: 2 N ethanol. NaOH / 4 h / Ambient temperature 3: p-toluenesulfonic acid / toluene / 3 h / Heating View Scheme