Sodium Hydroxide → HCID 59464220, compound

Participants

Reaction Steps

To a stirred solution of methyl 1-(5-{[(5-{[4-(4-chlorophenoxy)phenyl]amino}-1,3,4-oxadiazol-2-yl)carbonyl]amino}pyridin-2-yl)piperidine-4-carboxylate (Example 638; 340 mg, 0.62 mmol) in MeOH (5 mL) was added 2M NaOH (1.5 mL, 3.10 mmol) and the reaction mixture was allowed to stir at ambient temperature overnight. The solvent was evaporated and the aqueous residue adjusted to pH ˜1-2 with 2M HCl, the solid was filtered and dried to give the title compound (284 mg, 0.531 mmol, 86%); 1H NMR δ 1.79-1.90 (m, 2H), 2.14-2.19 (m, 2H), 2.78-2.84 (m, 1H), 3.33-3.40 (m, 2H), 4.35-4.39 (m, 2H), 7.23 (d, 2H), 7.37 (d, 2H), 7.43 (d, 1H), 7.64 (d, 2H), 7.88 (d, 2H), 8.33 (d, 1H), 8.73 (s, 1H), 11.26 (s, 1H), 11.36 (s, 1H); CO2H not seen; MS m/e MH+ 535.

Provenance & Evidence