Sodium Hydroxide → 1152534-54-7

Participants

Reaction Steps

1M NaOH (5 ml) was added to a solution of ethyl 5-(4-{2-[(aminocarbonyl)amino]ethoxy}phenyl)-1-(4-methoxyphenyl)-1H-pyrazole-3-carboxylate (1.75 g) in THF (15 ml) and MeOH (10 ml). The reaction mixture was stirred at ambient temperature and concentrated in vacuo. The residue was dissolved in H2O and acidified by 1M HCl. white precipitates were collected and washed successively with H2O and IPE to give 5-(4–12-[(aminocarbonyl)amino]-ethoxy}phenyl)-1-(4-methoxyphenyl)-1H-pyrazole-3-carboxylic acid (1.58 g) as a white powder.

Provenance & Evidence