Benzyl 1-(2-hydroxy-2-methylpropyl)-5-methyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxylate → 1-(2-Hydroxy-2-methylpropyl)-5-methyl-3-oxo-2-phenyl-2,3-dihydropyrazole-4-carboxylic Acid

Participants

Reaction Steps

To a stirring solution of benzyl 1-(2-hydroxy-2-methylpropyl)-5-methyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxylate (300 mg, 789 μmol) in MeOH (10 mL) was purged with argon for 10 min. To this solution was added Pd/C (40 mg), and the mixture was stirred for 3 h under balloon of hydrogen. Reaction was monitored by LCMS. The reaction mixture was filtered through a bed of celite and concentrated under reduced pressure to give the title compound (220 mg, 96.1% yield) as an off-white solid. MS (ESI pos. ion) m/z: 291 (MH+). Calc'd exact mass for C15H18N2O4 290.

Provenance & Evidence