Hydrochloric Acid → HCID 44231886, compound

Participants

Reaction Steps

A solution of ethyl 3-(4-(2-(5-amino-8-methylbenzo[f][1,7]naphthyridin-2-yl)ethyl)-3-methylphenyl)propanoate (from Example 66) in 1 N NaOH, THF and methanol (1:5:2, 0.1 N) was heated at 60° C. for 3 hours. After cooling to room temperature the reaction mixture was neutralized with 1 N HCl to pH7, and was concentrated to give a crude residue which was purified by chromatography (silica gel, 0-20% methanol in dichloromethane) to afford (E)-ethyl 3-(4-(2-(5-amino-8-methylbenzo[f][1,7]naphthyridin-2-yl)ethyl)-3-methylphenyl)acrylate as a white solid. 1H NMR: (methanol-d4): δ 8.73 (d, 1H), 8.54 (d, 1H), 8.20 (d, 1H), 7.45 (s, 1H), 7.37 (d, 1H), 7.00-6.97 (m, 2H), 6.92 (d, 1H), 3.19 (t, 2H), 3.04 (t, 2H), 2.81 (t, 2H), 2.53 (t, 2H), 2.50 (s, 3H), 2.25 (s, 3H). LRMS [M+H]=400.2

Provenance & Evidence