dipotassium hydrogenphosphate; sodium hydrogensulfide in water; isopropyl alcohol Ambient temperature;

1: 95 percent / aq. NaOH / ethanol / 15 h / Ambient temperature 2: 86 percent / K2HPO4, NaHS*2H2O / propan-2-ol; H2O / Ambient temperature View Scheme

1: 85 percent / peracetic acid / ethyl acetate; acetic acid / 1 h / Ambient temperature 2: 5 percent / I2, DMSO, H2SO4 / 2 h / 100 °C View Scheme