Ethanol → HCID 20094553, compound

Participants

Reaction Steps

Ethanol (1.2 ml), ion-exchanged water (0.3 ml), and potassium hydroxide (45 mg) were added to 1-[3-bromo-2-(2-ethoxycarbonylphenyl)-2H-indazol-5-yl]methyl-2-butyl-4-chloro-5-(hydroxymethyl)-1H-imidazole (106 mg, 0.205 mmol) as obtained in Example 2, and the mixture was stirred at room temperature for one day. The mixture was concentrated in an evaporator, and partitioned by ion-exchanged water (2.5 ml) and diethyl ether (5 ml). The water layer was separated and conc. hydrochloric acid was dropwise added thereto to adjust its pH to 5-6. The resultant solid was filtered off and washed twice with ion-exchanged water (1 ml). One drop of conc. hydrochloric acid was added to the filtrate to precipitate solid, which was filtered off, washed with water, and combined with the previously-obtained solid. They were dried in vacuo at 37° C. for two days to give 56 mg of 1-[3-bromo-2-(2-carboxyphenyl)-2H-indazol-5-yl]methyl-2-butyl-4-chloro-5 -(hydroxymethyl)-1-H-imidazole.

Provenance & Evidence