Dimethylformamide → 2-Bromo-4,6-dimethoxybenzaldehyde

Participants

Reaction Steps

To a mixture of 1-bromo-3,5-dimethoxybenzene (21.7 g, 100.0 mmol) in DMF (80 mL) was added POCl3 (15 mL, 150 mmol) at 0° C. The reaction mixture was stirred at room temperature for 30 min and then heated to 100° C. for an additional 30 min. After cooling to room temperature, the mixture was poured onto ice (200 g). The precipitate was collected by filtration and dried under high vacuum to give the title compound as a yellow solid (19.4 g, Yield: 79%). 1H NMR (400 MHz, CDCl3) δ 12.33 (s, 1H), 10.11 (s, 1H), 6.47 (s, 1H), 6.39 (s, 1H), 5.49 (t, J=3.13 Hz, 1H), 3.78-3.90 (m, 1H), 3.52-3.72 (m, 1H), 2.54 (s, 3H), 1.77-2.03 (m, 3H), 1.53-1.70 (m, 3H); MS (ESI) m/z=285 [M+H]+.

Provenance & Evidence