The thermal decomposition of geminal diazides 1a, b leading to pyrazolo[4,3-d]pyrimidines 4ab and the photochemical decomposition of 1a yielding uracil-5-carboxylate 6 is described; the single crystal X-ray analysis of 4a is also reported.
C. O. Kappe and G. Färber, J. Chem. Soc., Perkin Trans. 1, 1991, 1342 DOI: 10.1039/P19910001342
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