Ammonium Hydroxide → HCID 178508010, compound

Participants

Reaction Conditions

Reaction Steps

Stannous chloride dihydrate (1.6 g, 0.0070 mol) was added in one portion to a stirred solution of (6-nitro-3H-imidazo[4,5-b]pyridin-2-yl)-methanol (450 mg, 0.0023 mol) in 10% aqueous hydrochloric acid (20 mL) at 50° C. The mixture was stirred at 50° C. for approx. 2 hours then allowed to cool to room temperature. The mixture was cooled further to 0° C. and then basified to ca. pH 8 using conc. NH4OH. The aqueous layer was then filtered through Celite® to remove tin salts, and the filtrate was concentrated under vacuum to leave a crude solid (380 mg; yield assumed quantitative) which was used directly in the next step (amide formation).

Provenance & Evidence