A facile one-pot synthesis of substituted pyridine-2,4(1H,3H)-diones from acyl(carbamoyl)ketene S,S-acetals.

[摘要]：A facile and efficient one-pot synthesis of substituted pyridine-2,4(1H,3H)-diones was developed. Subjected to DMF-DMA in DMF at 120? a series of acyl(carbamoyl)ketene dithioacetals was converted into the corresponding pyridine-2,4(1H,3H)-diones in high yields.

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