Water → HCID 59277773, compound

Participants

Reaction Steps

3-Bromo-7-methylimidazo[1,2-α]pyridine (4.2 g, 20.0 mmol) and 3-aminophenylboronic acid (4.0 g, 25.8 mmol) were suspended in 1,2-dimethoxyethane (80 ml) and sodium carbonate (40 ml of a 2M solution) and the resulting solution degassed for 25 minutes. Tetrakis(triphenylphosphine)palladium(0) (250 mg, 0.2 mmol) was added and the mixture heated at reflux for 17 hours. The cooled reaction mixture was poured into water (150 ml), extracted with ethyl acetate (3×70 ml) and the combined organics dried over anhydrous magnesium sulphate. The solution was filtered and concentrated in vacuo to yield 3-(3-aminophenyl)-7-methylimidazo[1,2-α]pyridine as a colourless oil (4.5 g, 100%) which was used without further purification. 1H NMR (400 MHz, CDCl3) δH 2.38 (3H, s), 3.58 (2H, br s), 6.60 (1H, d, J 7), 6.70 (1H, d, J 8), 6.81 (1H, s), 6.91 (1H, d, J8), 7.24-7.28 (1H, m), 7.39 (1H, s), 7.57 (1H, s), 8.23 (1H, d, J 7); m/z (ES+) 224 (M++H).

Provenance & Evidence