2-Aminopyridine → HCID 44199050, compound

Participants

Reaction Steps

3-(1-Oxo-1,3-dihydro-isoindole-2-yl)-3-phenyl-propionic acid (0.42 mmol, 1 eq), 2-amino pyridine (1.5 eq), HBTU [2-(1H-benzotriazol-1-yl)-1,1,3,3-tetramethyluroniumhexafluorophosphat], (1.5 eq) and N-ethyl diisopropylamine (1.5 eq) are suspended in chloroform and reacted in the microwave (90 min, 120° C., Emrys Optimizer). The resulting mixture is partitioned between chloroform and water. The organic phase is dried over Na2SO4, filtered and concentrated in vacuo. The crude product is dissolved in DMSO and purified by prep. LC/MS (reversed phase). 3-(1-Oxo-1,3-dihydro-isoindole-2-yl)-3-phenyl-N-pyridine-2-yl-propionamide (“A1”) is obtained as brown solid (36% yield); ES-MS (MH+)=358.2; 1H-NMR (DMSO-d6, 400 MHz): δ [ppm] 10.72 (s, 1H), 8.29 (d, 1H, 4.8 Hz), 7.97 (d, 1H, 8.3 Hz), 7.73-7.27 (m, 10H), 7.08-7.05 (m, 1H), 5.95-5.92 (m, 1H), 4.62 (d, 1H, 17.5 Hz), 4.18 (d, 1H, 17.5 Hz), 3.39-3.32 (m, 2H).

Provenance & Evidence