Pyridine → HCID 66685413, compound

Participants

Reaction Steps

(E)-Methyl 2-((2-(hex-4-en-1-yloxy)-2-oxoethyl)amino)-2-oxoacetate (0.24 g, 1 eq) and DCM (2.4 mL) were added to a vessel with stirring followed by the addition of pyridine (95 mg, 1.2 eq). Tf2O (0.42 g, 1.5 eq) was then added over 45 min at ambient temperature and the mixture was stirred at ambient temperature for 48 h. The mixture was washed with 20 wt % aqueous NaOAc (2×1.5 mL), 10 wt % aqueous citric acid (3×1.5 mL), and water (1×1.5 mL). The organic layer was then concentrated under reduced pressure to provide the title compound as a solid. 1H NMR (300 MHz, CDCl3) δ ppm 8.10 (s, 1H), 4.15-4.25 (m, 2H), 3.94 (s, 3H), 2.71 (t, J=6.56 Hz, 2H), 2.47 (s, 3H), 2.00-2.18 (m, 2H); 13C NMR (75 MHz, CDCl3) δ ppm 166.71, 153.50, 138.69, 136.72, 135.67, 130.36, 65.93, 52.35, 22.18, 21.49, 14.57; HRMS (M+H) m/z, calcd for C11H14NO3, 208.0974; found 208.0981.

Provenance & Evidence