biscyclopentadienyliron(II); dihydrogen peroxide; dimethyl sulfoxide in water T=40 - 50°C; 0.333333 h;

potassium hydroxide in tert-butyl alcohol 10 h; Heating;

N-iodo-succinimide; acetic acid in acetonitrile T=65°C; 5 h; Industrial scale;

1: With sulfuric acid T=0°C; 0.0833333 h; 2: With nitric acid T=20 - 50°C; 5.08333 h;

1: potassium carbonate; iodine / H2O / 13 h / 20 - 50 °C 2: POCl3 / dimethylformamide / 2.5 h / 80 °C View Scheme

bromine; sodium acetate; acetic acid T=80°C; 14 h;

Lawesson's reagent in toluene

1: potassium carbonate; iodine / H2O / 13 h / 20 - 50 °C 2: 920 mg / silver(I) carbonate / hexane; tetrahydrofuran / 25 h / 40 °C View Scheme

1: potassium carbonate; iodine / H2O / 13 h / 20 - 50 °C 2: 920 mg / silver(I) carbonate / hexane; tetrahydrofuran / 25 h / 40 °C 3: 82 percent / tetrakis(triphenylphosphine)palladium(0) / dimethylformamide / 8 h / 80 °C View Scheme

1.1: potassium carbonate; iodine / H2O / 13 h / 20 - 50 °C 2.1: 920 mg / silver(I) carbonate / hexane; tetrahydrofuran / 25 h / 40 °C 3.1: 82 percent / tetrakis(triphenylphosphine)palladium(0) / dimethylformamide / 8 h / 80 °C 4.1: diisobutyl aluminum hydride / toluene / 12 h / 20 °C 4.2: 43 percent / sodium borohydride / methanol / 12 h / 20 °C 5.1: 66 percent / POCl3 / dimethylformamide / 0.67 h / 100 °C View Scheme