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- W2134740919 abstract "Certain 2,5-dihydroxypyrazines and related systems undergo 1,4-cycloaddition reactions. Dimethyl acetylenedicarboxylate reacts to give bicyclic adducts which readily undergo a retro-Diels-Alder reaction with elimination of cyanic acid and formation of substituted pyridones. 5-Ethoxy-1,3-dimethylpyrazin-2-one (16) has been synthesised and shown to undergo ready cycloaddition reactions even with non-activated double bonds. The implications of these reactions relative to the biosynthesis of the mould metabolite brevianamide A and related compounds are discussed." @default.
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- W2134740919 date "1973-01-01" @default.
- W2134740919 modified "2023-10-03" @default.
- W2134740919 title "Pyrazine chemistry. Part V. Diels-Alder reactions of some 2,5-dihydroxypyrazines" @default.
- W2134740919 doi "https://doi.org/10.1039/p19730000404" @default.
- W2134740919 hasPublicationYear "1973" @default.
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