Ethanol → HCID 86692838, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 3-(1-naphthyl)-1H-pyrazol-5-amine (654 mg, 3.12 mmol) and dimethyl malonate (0.394 mL, 3.44 mmol) in anhydrous ethanol (9.44 mL, 162 mmol) is added 0.5 M sodium methoxide in methanol (12.5 mL, 6.25 mmol). The mixture is heated at 120° C. under a nitrogen atmosphere overnight. The reaction mixture is cooled to room temperature and the solvent is removed in vacuo. The residue is suspended in water and the precipitate is collected in a Buchner funnel to provide 2-(1-naphthyl)pyrazolo[1,5-a]pyrimidine, 7-diol (534 mg, yield 62%). LCMS: (AA) M+1 278; 1H NMR (400 MHz, DMSO) δ 10.17 (s, 1H), 8.73 (dd, J=8.2, 4.8 Hz, 1H), 7.99-7.88 (m, 2H), 7.72 (dd, J=7.1, 1.1 Hz, 1H), 7.58-7.49 (m, 4H), 5.83 (s, 1H), 4.14 (s, 1H).

Provenance & Evidence