1,4-dioxane; iodine; potassium iodide Reagens 4: Wasser, Reagens 5: wss. Natronlauge;

1: aluminium chloride; sulfur 2: aluminium chloride; carbon disulfide 3: dioxane; iodine; potassium iodide / Reagens 4: Wasser, Reagens 5: wss. Natronlauge View Scheme

sodium tetrahydroborate; nickel dichloride in tetrahydrofuran; methanol 1 h; Ambient temperature;