Lithium hydroxide, monohydrate → 4-((4-chlorophenyl)((4-methoxybenzyl)amino)methyl)-1-cyclopropyl-3-methyl-1H-pyrazole-5-carboxylic acid

Participants

Reaction Steps

In a 100-mL flask was introduced 4-((4-chlorophenyl)((4-methoxybenzyl)amino)methyl)-1-cyclopropyl-3-methyl-1H-pyrazole-5-carboxylate (Step 23.6) (2.22 g, 4.89 mmol) and LiOH.H2O (0.616 g, 14.67 mmol) in dioxane (15 mL) and H2O (6 mL). The reaction mixture was stirred for hr at rt, quenched with 0.5N HCl (100 mL), and diluted with EtOAc (100 mL). The resulting suspension was filtered to afford the title compound (2.30 g, 4.59 mmol, 94% yield) as a colorless solid. tR: 3.86 min (HPLC 1); tR: 0.87 min (LC-MS 2); ESI-MS: 426 [M+H]+ (LC-MS 2).

Provenance & Evidence