1: Me2S / copper(I) iodide / tetrahydrofuran / 1 h / -78 °C 2: 46 percent / 5N KOH / 3 h / Heating View Scheme

1: 90.5 percent / CuI / tetrahydrofuran / 1.) -10 deg C, 1 h, 2.) 20-25 deg C, 4 h 2: 94 percent / 10percent HCl / acetone / 3 h / 20 - 22 °C 3: 93 percent / NaBH4 / ethanol / 2 h / 18 - 20 °C 4: 85 percent / pyridine / 5 h / 20 °C View Scheme

1: 66 percent / NEt3 / tetrahydrofuran / 0.33 h / -70 - -60 °C 2: 92 percent / conc. H2SO4 / ethanol; H2O / 0.33 h / Heating 3: 90 percent / 500 °C / 10 Torr 4: 71 percent / NEt3 / 3-benzyl-5-(2-hydroxyethyl)-4-methyl-1,3-thiazolium chloride / 15 h / 65 °C View Scheme

1: 66 percent / NEt3 / tetrahydrofuran / 0.33 h / -70 - -60 °C 2: 92 percent / conc. H2SO4 / ethanol; H2O / 0.33 h / Heating 3: 90 percent / 500 °C / 10 Torr 4: 76 percent / NEt3 / 3-benzyl-5-(2-hydroxyethyl)-4-methyl-1,3-thiazolium chloride / 15 h / 65 °C View Scheme

1: 66 percent / NEt3 / tetrahydrofuran / 0.33 h / -70 - -60 °C 2: 92 percent / conc. H2SO4 / ethanol; H2O / 0.33 h / Heating 3: 90 percent / 500 °C / 10 Torr View Scheme

[Fe(S-2-Naphthyl)2]2(nmp)3 in tetrahydrofuran T=0°C; 1 h; Inert atmosphere;