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6-Methyluracil and 5-nitro-6-methyluracil react with variable molar quantities of benzoyl chloride in acetonitrile-pyridine at room temperature to give 1-N, 3-N-dibenzoyl-6-methyluracil 3b and 1-N-benzoyl-5-nitro-5-methyluracil 4b.The reactive rates of de