Abstract
The condensation of 5-aminouracil with aromatic aldehydes gave the appropriate C-arylimines, which were used in [2+3] cycloaddition with nitrile oxides derived from 4-substituted benzaldoximes. As a result of the dipolar cycloaddition reaction several hitherto unknown 5-(3,5-diphenyl-1,2,4-oxadiazol-4(5H)-yl)pyrimidine-2,4(1H,3H)-diones have been obtained in satisfactory yields.
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The authors thank the National Science Centre in Poland (grant no. N N204347840) for financial support.
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Jakubiec, D., Walczak, K.Z. Aldimines of 5-aminouracil as reagents in 1,3-dipolar cycloaddition reaction. Monatsh Chem 142, 1155–1161 (2011). https://doi.org/10.1007/s00706-011-0616-1
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DOI: https://doi.org/10.1007/s00706-011-0616-1