Dimethylformamide → 1-(4-methoxybenzyl)-1H-indole-4-carbonitrile

Participants

Reaction Steps

1-(Chloromethyl)-4-methoxybenzene (30.3 g, 193 mmol) was added to a slurry of 1H-indole-4-carbonitrile (25.0 g, 176 mmol) and NaH (7.74 g, 193 mmol) in DMF (586 mL, 176 mmol) at 0° C., and the resulting mixture was stirred at ambient temperature for 24 hours. The reaction mixture was poured into water and extracted with ethyl acetate (3×). The combined organic layers were washed with water and brine, dried (Na2SO4) and concentrated to afford a crude residue, which was purified by column chromatography eluting with an ethyl acetate/hexanes gradient to give 1-(4-methoxybenzyl)-1H-indole-4-carbonitrile (46.0 g, 175 mmol, 99%). 1H NMR (400 MHz, CDCl3) 7.89 (d, J=8.2 Hz, 1H), 7.81 (d, J=3.1 Hz, 1H), 7.54 (d, J=7.4 Hz, 1H), 7.26 (t, J=7.8 Hz, 1H), 7.21 (d, J=8.6 Hz, 2H), 6.87 (d, J=8.6 Hz, 2H), 6.64 (d, J=2.7 Hz, 1H), 5.44 (s, 2H), 3.70 (s, 3H).

Provenance & Evidence