Potassium Carbonate → HCID 86743156、化合物

関与物質

反応手順

To a mixture of 0.8 g of 3-ethoxycarbonyl-9-mercapto-4H-pyrido[1,2-a]pyrimidin-4-one II-1, 0.5 g of powdery potassium carbonate and 25 ml of acetone is added 0.7 g of 4-n-butoxybenzoyl chloride with stirring, and the resultant mixture is stirred at room temperature for 2 hours. The resultant precipitate is filtered and distributed in water-chloroform. The chloroform layer is washed with saturated brine, dried over sodium sulfate and concentrated. The residue (1.1 g) is chromatographed on a column of silica gel, eluting with ethyl acetate. Concentration of the eluate affords 0.7 g of the titled compound.

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