9-Bromomethylanthracene → 9-(Azidomethyl)anthracene

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A solution of 9-bromomethyl-anthracene (7.85 g, 29.0 mmol) and sodium azide (7.79 g, 120 mmol) in dimethylformamide (DMF, 190 mL) was heated at 50° C. for 30 minutes. The mixture was cooled to room temperature, and extracted with ether, and the ether layers were washed with water, dried over MgSO4 and concentrated to give 9-azidomethyl-anthracene as yellow crystals (5.92 g, 87% yield). 1H NMR (CDCl3) δ 8.53 (1H, s), 8.31 (2H, d), 8.07 (2H, d), 7.61 (2H, dd), 7.53 (2H, dd), 5.35 (2H, s).

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