Potassium Carbonate → HCID 86743157, compound

Participants

Reaction Steps

To a mixture of 30 g of 3-ethoxycarbonyl-9-mercapto-4H-pyrido[1,2-a]pyrimidin-4-one II-1, 2.49 g of powdery potassium carbonate and 500 ml of acetone is added 23.8 g of 4-methoxycarbonylbenzoyl chloride with stirring, and the resultant mixture is stirred at room temperature for 1 hour. The reaction mixture is concentrated to dryness in vacuo and the residue is distributed in water-chlofororm. The chloroform layer is washed with saturated brine, dried over sodium sulfate and concentrated in vacuo. The residue is recrystallized from ethyl acetate to give 43 g of the titled compound Ie-66.

Provenance & Evidence