1: I2; NaHCO3 / ethanol 2: Lawesson's reagent / toluene / 0.5 h / Heating 3: H2S / ethanol / pH 7.4 4: I2; NaHCO3 / ethanol 5: Hg(OAc)2; AcOH / CHCl3 / 0.5 h / 20 °C 6: H2S / ethanol / pH 7.4 7: 90 percent / Lawesson's reagent / toluene / 0.5 h / Heating 8: 77 percent / Lawesson's reagent / toluene / 3 h / Heating 9: ethanol / Heating 10: P4S10 / xylene / 2 h / Heating 11: ethanol / Heating 12: Hg(OAc)2; AcOH / CHCl3 / 0.5 h / 20 °C 13: I2; NaHCO3 / ethanol 14: Lawesson's reagent / toluene / 0.5 h / Heating 15: H2S / ethanol / pH 7.4 16: P4S10 / xylene / 2 h / Heating 17: ethanol / Heating 18: P4S10 / xylene / 2 h / Heating 19: ethanol / Heating 20: P4S10 / xylene / 2 h / Heating 21: ethanol / Heating 22: I2; NaHCO3 / ethanol 23: H2S / ethanol / pH 7.4 24: P4S10 / xylene / 2 h / Heating 25: ethanol / Heating 26: P4S10 / xylene / 2 h / Heating View Scheme

Lawesson's reagent in toluene 0.5 h; Heating;