2-Methoxyethylamine → 9-morpholin-4-yl-5H-benzo[c][1,8]naphthyridin-6-one

Participants

Reaction Conditions

Reaction Steps

9-Chloro-5H-benzo[c][1,8]naphthyridin-6-one (50 mg, 0.22 mmol), 2-methoxy-ethylamine (24 mg, 0.33 mmol), palladium(II) acetate (2 mg, 0.01 mmol), 2-dicyclohexylphosphino-2′,4′,6′-triisopropylbiphenyl (8 mg, 0.02 mmol), and sodium tert-butoxide (63 mg, 0.65 mmol) were suspended in dioxane (2 mL), and stirred overnight at 100° C. The reaction mixture was added directly to a Biotage column. The crude product was purified via Biotage silica-gel chromatography eluting with a gradient of 0 to 10% MeOH in CH2Cl2 to provide 26 (20 mg, 34% yield) as a white solid. LC-MS (M+H=270, obsd.=270). 1H NMR (400 MHz, d6-DMSO): δ 11.48 (s, 1H), 8.67 (d, 1H), 8.42 (dd, 1H), 7.98 (d, 1H), 7.38 (d, 1H), 7.24 (dd, 1H), 6.95 (dd, 1H), 6.67 (t, 1H), 3.55 (t, 2H), 3.42 (t, 2H), 3.30 (s, 3H).

Provenance & Evidence