Phenyl 2-(6-amino-2-oxo-3,4-dihydroquinolin-1(2H)-yl)ethyl(methyl)carbamate → HCID 178480394, compound

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Reaction Steps

A solution of compound 8 (321.6 mg, 1.24 mmol) in dry ethanol (10 mL) was treated with compound 6 (707 mg, 2.48 mmol) at room temperature. The reaction mixture was stirred for 16 hours at room temperature then diluted with saturated NaHCO3 solution (50 mL) and extracted with CH2Cl2 (2×50 mL). The combined organic fractions were washed with brine (50 mL), dried (Na2SO4) and concentrated to give a brown residue. The crude product was purified by column chromatography on silica gel (MeOH:CH2Cl2, 2:98 followed by 2 N NH3 in MeOH:CH2Cl2, 4:96 to 5:95) to give compound 39 (374.6 mg, 81.9%) as a yellow residue. 1H-NMR (DMSO-d6) δ 1.56-1.79 (m, 9H), 1.97 (t, 2H, J=10.5 Hz), 2.16 (s, 3H), 2.65 (brs, 2H), 2.80 (d, 2H, J=10.2 Hz), 2.91 (brs, 2H), 3.12 (m, 1H), 6.30 (brs, 2H), 6.59 (m, 2H), 6.89 (d, 1H, J=8.9 Hz), 7.07 (t, 1H, J=4.5 Hz), 7.57 (d, 1H, J=5.1), 7.70 (d, 1H, J=3.5 Hz); ESI-MS (m/z, %) 369 (MH+, 35), 272 (100). ESI-HRMS calculated for C21H29N4S (MH+), calculated: 369.2101; observed: 369.2107; HPLC-purity: 97.31% by area.

Provenance & Evidence