Water → 2-Bromo-3-Dodecylthiophene

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To a solution of 3-dodecylthiophene (5.00 g, 19.8 mmol) in CHCl3/HOAc (1:1) (Vt=20.0 mL) at 0° C. was added NBS (3.52 g, 19.8 mmol) in portions over a period of 45 minutes. The reaction mixture was stirred for 1 hour at 0° C., and overnight at room temperature. The reaction mixture was poured into water (50.0 mL) and extracted with chloroform (3×50.0 mL). The combined organic phases were washed with water (50.0 mL), NaOH solution, and dried over MgSO4. After filtration through Celite, the chloroform was removed in vacuo, and the product was obtained as a colorless oil (6.05 g, 93% yield). 1H NMR (CDCl3): δ 0.84-1.54 (m, 23H), 2.53 (t, 2H), 6.76 (d, 1H, J=4.5 Hz), 7.15 (d, 1H, J=4.5 Hz).

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