Diisopropylethylamine → HCID 44200989, compound

Participants

Reaction Conditions

Reaction Steps

6-Methylnicotinic acid (0.67 g, 4.89 mmol), HATU (1.86 g, 4.89 mmol), and DIPEA (0.85 mL, 4.89 mmol) were stirred in dry DMF (20 mL) for 1 h before 17 (1.5 g, 4.44 mmol) was added at rt. The stirring was continued for 1 h before it was heated at 100° C. for 5 h. After cooling and filtration, the mixture was purified by preparative LC/MS to give 1,7-dimethyl-3-(2-methyl-5-(5-(6-methylpyridin-3-yl)-1,2,4-oxadiazol-3-ylamino)phenyl)-1,6-naphthyridin-2(1H)-one (A51) as a solid. 1H NMR (400 MHz, d6-DMSO) δ 9.27 (d, J=2.0 Hz, 1H), 9.10 (s, 1H), 8.73 (dd, J=2.0, 8.4 Hz, 1H), 8.07 (s, 1H), 7.94 (s, 1H), 7.85 (d, J=8.4 Hz, 1H), 7.50 (d, J=2.4 Hz, 1H), 7.46 (dd, J=2.4, 8.4 Hz, 1H), 7.29 (d, J=8.4 Hz, 1H), 3.85 (s, 3H), 2.87 (s, 3H), 2.79 (s, 3H), 2.19 (s, 3H). MS m/z 439.2 (M+1).

Provenance & Evidence