Sodium Acetate → HCID 178502636, compound

Participants

Reaction Steps

O-Methyl-hydroxylamine hydrochloride (23 mg, 0.27 mmol) was added to a stirred cold (0° C.) mixture of 5-phenyl-1H-pyrazole-3-carboxylic acid {2-[4-(2-formyl-phenoxy)-piperidin-1-yl]-2-oxo-ethyl}-amide (100 mg, 0.23 mmol) and sodium acetate (56 mg, 0.7 mmol) in MeOH (10 mL) and stirring was continued at ambient temperature for 4 hrs. The reaction mixture was diluted with water, extracted with ethyl acetate, dried over sodium sulfate, and the organic layer was concentrated under reduced pressure. The residue was purified by preparative HPLC to afford 33 mg (31.13% yield) of 5-phenyl-1H-pyrazole-3-carboxylic acid (2-{4-[2-(methoxyimino-methyl)-phenoxy]-piperidin-1-yl}-2-oxo-ethyl)-amide. LC/MS [M+H]+: 462.2, 96.3%. 1H NMR (300 MHz, DMSO-d6): δ13.7 (s, 1H), 8.4 (s, 1H), 8.1 (t, 1H), 7.8 (t, 2H), 7.7 (d, 1H), 7.5-7.34 (m, 4H), 7.2 (d, 1H), 7.1 (s, 1H), 7.0 (t, 1H), 4.8 (bs, 1H), 4.2 (b, 2H), 3.9 (s, 3H), 3.8-3.6 (bs, 2H), 3.5 (b, 2H), 2.1-1.9 (b, 2H), 1.8-1.6 (b, 2H).

Provenance & Evidence