Ethanol → HCID 15617192, compound

Participants

Reaction Steps

A solution of 2-[4-(trifluoromethyl)phenyl]-3H-imidazo[4,5-b]pyridine-3-acetic acid ethyl ester (17.7 g, 0.051 mole), potassium hydroxide pellets (4.5 g, 0.080 mole), 95% ethanol (150 ml), and water (10 ml) was refluxed for 21/2 hrs. The ethanol was evaporated in vacuo, the residue acidified with glacial acetic acid, and the mixture filtered. The filter cake was suspended in water (300 ml) and filtered. The filter cake was air dried (17 g) and recrystallized from ethanol-water to give 12.21 g (75%) of a white solid, mp 240°-241° C.

Provenance & Evidence