3-Bromo-4-methoxybenzaldehyde → 5-Formyl-2-methoxybenzonitrile

Participants

Reaction Conditions

Reaction Steps

Add copper (I) cyanide (4.58 g, 51.2 mmol) to a solution of 3-bromo-4-methoxy-benzaldehyde (10.0 g, 46.5 mmol) in N,N-dimethylformamide (0.2 M). Heat the solution to 120° C. and stir the solution for 1 d. Quench with potassium carbonate (sat) and extract with diethyl ether (5×). Wash organic layers with water, dry with sodium sulfate, and concentrate to afford the title compound (5.00 g, 31.0 mmol, 67%): 1H NMR (400 MHz, DMSO-d6) δ 4.04 (s, 3H), 7.47 (d, J=8.6 Hz, 1H), 8.20 (m, 1H), 8.33 (m, 1H), 9.91 (s, 1H).

Provenance & Evidence