Abstract
Heating 5-azauracil 1 with 3-methyl-1-phenylpyrazol-5-one 2 in boiling butanol gave dipyrazolylmethane 3 and biuret 4; under similar conditions, indoles 5 react with 1 to yield stable 6-indolyl derivatives of 2,4-dioxohexahydro-s-triazine 6.
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