Ethanol → 4-(2-Methyl-1H-imidazo[4,5-C]pyridin-1-YL)benzoic acid

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Reaction Conditions

Reaction Steps

A mixture of 4-(2-methylimidazo[4,5-c]pyrid-1-yl)benzonitrile (12.0 g, 51.3 mmol) and 40% aqueous sodium hydroxide (55 ml) in absolute ethanol (55 ml) was heated at reflux for 11/2 hours. The solvent was removed under reduced pressure, and the brown residue was dissolved in water. The solution was chilled to 0° C. by the addition of ice. Glacial acetic acid (ca 33 ml) was added slowly. The buff solid which precipitated was filtered off, washed with water, and dried in vacuo at 70° C. Yield 9.14 g (70%).

Provenance & Evidence