1: 92 percent / sulphuryl chloride / acetic acid / 3 h / Ambient temperature 2: 83 percent / Fremy's salt, K2HPO4 / H2O / 24 h / Ambient temperature 3: 39 percent / NaOH / H2O / 2 h / Heating 4: 1.) H2, 2.) NaOAc / 1.) 10percent Pd-carbon / 1.) ethyl acetate, 1 h, 2.) 100 deg C, 15 min View Scheme

1: 1.) aq. NaOH / 1.) H2O, reflux, 3 h, 2.) benzene, animal charcoal, reflux, 1 h 2: Fremy's salt, K2HPO4 / H2O / 24 h / Ambient temperature 3: 39 percent / NaOH / H2O / 2 h / Heating 4: 1.) H2, 2.) NaOAc / 1.) 10percent Pd-carbon / 1.) ethyl acetate, 1 h, 2.) 100 deg C, 15 min View Scheme

1: Fremy's salt, K2HPO4 / H2O / 24 h / Ambient temperature 2: 39 percent / NaOH / H2O / 2 h / Heating 3: 1.) H2, 2.) NaOAc / 1.) 10percent Pd-carbon / 1.) ethyl acetate, 1 h, 2.) 100 deg C, 15 min View Scheme

1: 83 percent / Fremy's salt, K2HPO4 / H2O / 24 h / Ambient temperature 2: 39 percent / NaOH / H2O / 2 h / Heating 3: 1.) H2, 2.) NaOAc / 1.) 10percent Pd-carbon / 1.) ethyl acetate, 1 h, 2.) 100 deg C, 15 min View Scheme

1: 39 percent / NaOH / H2O / 2 h / Heating 2: 1.) H2, 2.) NaOAc / 1.) 10percent Pd-carbon / 1.) ethyl acetate, 1 h, 2.) 100 deg C, 15 min View Scheme

hydrogen; sodium acetate; palladium on activated charcoal 1.) ethyl acetate, 1 h, 2.) 100 deg C, 15 min; Yield given. Multistep reaction;

sulfuric acid