Sodium Hydroxide → HCID 57665106, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of methyl 5-ethoxy-1-{4-[(ethylamino)carbonyl]phenyl}-1H-1,2,3-triazole-4-carboxylate (159 mg, 0.5 mmol) obtained in Example 1212a) in methanol (5 ml) was added 1N sodium hydroxide (2 ml) and the mixture was stirred at 60° C. for 30 min. The solvent was evaporated, and the residue was adjusted to pH 2-3 with 1N hydrochloric acid. The precipitated crystals were collected by filtration, dried and dissolved in DMF (5 ml). Cyclopropylamine (29 mg, 0.5 mmol), HOBt (84 mg, 0.55 mmol) and WSC (105 mg, 0.55 mmol) were successively added, and the reaction mixture was stirred at room temperature overnight. The solvent was evaporated under reduced pressure, water (5 ml) was added to the residue, and the precipitated crystals were collected by filtration and dried to give the title compound as a white powder (140 mg, 82%).

Provenance & Evidence