Sodium Carbonate → 3-Benzyloxy-7-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidine-2-carboxylic acid N'-[2-(4-fluoro-phenyl)-acetyl]-hydrazide

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Reaction Steps

The product from Example 9.1 (160 mg, 0.524 mmol) and sodium carbonate (106 mg, 1 mmol) were mixed with anhydrous tetrahydrofuran (25 mL) and then cooled in ice bath. To this stirred solution was added 4-fluorophenylacetyl chloride (90 mg, 0.55 mmol) dropwise. The mixture was stirred at room temperature for 2 h then concentrated in vacuo. The residue was portioned between ethyl acetate and water and the organic phase washed with water, dried (Na2SO4) and concentrated in vacuo. Short column chromatography afforded the desired compound (210 mg, yield 86%)

Provenance & Evidence