反应详情

A solution of 5-formylimidazo[1,5-a]pyridine (1.46 g) in 15 ml of dry dimethylsulfoxide is added to a solution of sodium 5-(triphenylphosphoranyl)valerate (4.4 g) in 50 ml of dry dimethylsulfoxide at room temperature (Helv. Chem. Acta 63 1430 (1980)). The reaction is stirred for 3 hours, hydrolyzed with water and neutralized with dilute sulfuric acid. Extraction with ethyl acetate and chromatography or silica gel yields 5-(5-carboxypent-1-enyl)-imidazo[1,5-a]pyridine.

1. extractionExtraction with ethyl acetate and chromatography or silica gel