Methylamine → HCID 22050313, compound

Participants

Reaction Steps

A solution of 3-[3-bromo-4-[(2,4-difluorobenzyl)oxy]-6-methyl-2-oxopyridin-1(2H)-yl]-4-fluorobenzoic acid (1 g, 2.1 mmol) in N,N-dimethylformamide (20 mL) was cooled to −10 C. Isobutyl chloroformate (0.27 mL, 2.1 mmol) and N-methyl morpholine (0.23 mL, 2.1 mmol) were added to the reaction vessel. After stirring at −10 C for 20 minutes, a solution of N-methyl amine (2.1 mL, 4.2 mmol, 2 M in THF) was added and the reaction mixture was warmed to room temperature as it stirred for 18 hours. The reaction mixture was concentrated in vacuo, suspended in water, filtered and washed with water, ethyl acetate and diethyl ether. 1H NMR (400 MHz, CD3OD) δ 8.03 (dddd, J=3.0, 6.4, 9.2 and 11.6 Hz, 1H), 7.81 (dd, J=3.0 and (0.2 Hz, 1H), 7.66 (q, J=10.4 Hz, 1H), 7.47 (t, J=12 Hz, 1H), 7.06 (t, J=12 Hz, 2H), 6.67 (s, 1H), 5.38 (s, 2H), 2.91 (s, 3H), 2.10 (s, 3H) ppm. 19F NMR (400 MHz, CD3OD) δ −111.50 (1F), −115.97 (1F), −120.16 ppm. ES-HRMS m/z 481.0346 (M+H calcd for C21H17BrF3N2O3 requires 481.0369).

Provenance & Evidence