Novel intramolecular rearrangement of 5-carbamoyluraclls into barbituric acids☆

Add time:08/28/2019    Source:sciencedirect.com

Heating of 5-carbamoyl- (1) and 5-thiocarbamoyl-3-methyl-1-phenyluracil (5) derivatives in ethanolic sodium ethoxide causes a novel intramolecular rearrangement to give 5-anilinomethylenebarbituric acids(2) and 5-anilinomethylene-4-thiobarbituric and(6), respectively.

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