1-Bromo-3-chloropropane → 2-(3-Chloropropylthiomethyl)-thiophene

Beteiligte Stoffe

Reaktionsschritte

1.5 ml of a 30% sodium methylate solution in methanol is added in drops to 1.0 g of thiophen-2-yl-methanethiol in 8 ml of anhydrous acetonitrile at 0° C. After 5 minutes, the drop-by-drop addition of 1.1 ml of 1-bromo-3-chloropropane is carried out. Then, the reaction solution is allowed to stir for 5 hours at room temperature. For working-up, the batch is diluted with ethyl acetate, washed with water and common salt solution, dried on magnesium sulfate and concentrated by evaporation in a vacuum. Chromatography of the crude product on silica gel with a hexane-ethyl acetate gradient yields 1.3 g of 2-(3-chloropropylthiomethyl)-thiophene as an oil.

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