CAS: 80537-07-1

2-Phenylpyrazolo[1,5-a]pyridine-3-carboxylic acid is a reagent that is used to fluorinate methyl esters. It can be used to monitor the reaction by spectroscopy. 2-Phenylpyrazolo[1,5-a]pyridine-3-carboxylic acid reacts with acid methyl esters to form acid methyl esters in the presence of selectfluor. The product can be purified by extraction with ethanol and recrystallization or by column chromatography.