Nitrogen → HCID 59375654, compound

Participants

Reaction Steps

To a solution of 9-bromo-6-[(1,2,2-trimethylpropyl)amino]benzo[c]-1,6-naphthyridin-1(2H)-one (150 mg, 0.040 mmol) in Et3N (3.0 mL) was added the phenylacetylene (50 mg, 0.05 mmol), CuI (10 mg) and PdCl2(PPh3)2 (10 mg). The mixture was stirred under reflux and N2 atmosphere for 12 h. After cooling to room temperature, the mixture was diluted with water (5 mL) and extracted with ethyl acetate (3×5 mL). The combined organic layers were washed with brine (5 mL), dried over magnesium sulfate, filtered, and concentrated to a crude residue that was purified by preparative TLC to afford 9-(phenylethynyl)-6-[(1,2,2-trimethylpropyl)amino]benzo[c]-1,6-naphthyridin-1(2H)-one. 1H-NMR (300 MHz, MeOH): δ 10.03 (s, 1H), 8.26 (d, J=8.3 Hz, 1H), 7.70 (d, J=9.0 Hz, 1H) 7.39 (m, 1H), 6.62 (m, 4H), 3.30 (s, 1H), 1.27 (d, J=6.9 Hz, 2H), 1.03 (s, 9H). LRMS calculated for C26H25N3O [M+H]+, 396; found 396.

Provenance & Evidence