N-Bromosuccinamide → HCID 22050601, compound

Participants

Reaction Steps

methyl 3-[3-bromo-4-[(2,4-difluorobenzyl)oxy]-6-methyl-2-oxopyridin-1(2H)-yl]-4-chlorobenzoate was prepared by reacting methyl-4-chloro-3-[4-[(2,4-difluorobenzyl)oxy]-6-methyl-2-oxopyridin-1(2H)-yl]benzoate (2.3 g, 5.47 mmol) with N-bromosuccinamide (0.97 g, 5.47 mmol) in acetonitrile (10 mL) at 0° C., using a similar procedure as described in step 3 of Example 465, to give 1.80 g (66.2%) of the desired product. 1H NMR (400 MHz, DMSO-d6) δ 8.06-8.03 (m, 2H), 7.86 (d, J=9.70 Hz, 1H), 7.68 (q, J=7.62, 1H), 7.34 (dt, J=10.07, 2.46 Hz, 1H), 7.17 (dt,J=8.72, 2.90 Hz, 1H), 6.73 (s, 1H), 5.33 (s, 2H), 3.85 (s, 3H), 1.91 (s, 3H). ES-MS m/z 495.9757 (M−H calcd for C21H14BrClF2NO4, requires 495.9795).

Provenance & Evidence