Hydrochloric Acid → HCID 68683347, compound

Participants

Reaction Conditions

Reaction Steps

Methyl (1-{5-[({5-[(2,4,5-trifluorophenyl)amino]-1,3,4-oxadiazol-2-yl}carbonyl)-amino]pyridin-2-yl}piperidin-4-yl)acetate (Example 319, 216 mg, 0.44 mmol) was suspended in a mixture of MeOH (4 ml) and THF (8 mL). Lithium hydroxide (4.4 mL of a 1M aqueous solution) was added. The resulting clear solution was heated at 45° C. for 15 minutes then cooled and acidified to pH ˜2 with dropwise addition of concentrated aqueous HCl. Volatile material was removed by evaporation and the residue was washed with water then dried to give the title compound (182 mg, 87%) as a solid; 1H NMR δ 1.16-1.45 (2H, m), 1.76-1.93 (2H, m), 1.98-2.13 (1H, m), 2.28 (2H, d), 3.12 (2H, t), 4.28 (2H, d), 7.25-7.41 (1H, m), 7.70-7.88 (1H, m), 8.13-8.32 (2H, m), 8.55 (1H, d), 11.16 (1H, s), 11.29 (1H, s); MS m/e MH+ 477.

Provenance & Evidence