Dimethyl Sulfoxide → HCID 178516530, compound

Participants

Reaction Steps

2-(1-naphthyl)-7-oxo-4,7-dihydropyrazolo[1,5-a]pyrimidine-6-carboxylic acid (2.00 g, 6.55 mmol) is stirred in dimethyl sulfoxide (5.06 mL, 71.2 mol) in a 350 mL sealed reaction vessel. Sodium chloride (0.545 g, 9.33 mol) is dissolved in water (2.26 mL) and added to the reaction mixture. The reaction is heated at 150° C. for 3 days during which time an additional 8 mL of DMSO is added along with 15 mL of additional water. The resulting precipitate is collected in a Buchner funnel to provide 2-(naphthalen-1-yl)pyrazolo[1,5-a]pyrimidin-7(4H)-one (1.48 g, 87%). LCMS: (AA) M+1 262.

Provenance & Evidence