ChemInform Abstract: Studies on Fused Pyrimidine Derivatives. Part 6. Characterization of a Perhydro‐5,6‐di(methylene)‐2,4‐dioxopyrimidine Intermediate and Its Cycloaddition Reactions Leading to Quinazoline Derivatives.

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<jats:title>Abstract</jats:title><jats:p>The dioxopyrimidinecarbaldehyde hydrazone (I) reacts with N‐methylmaleimide (II) to form the cycloadducts (III).</jats:p>

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