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Nucleophilic substitution or dipolar 1,3-cycloaddition in reactions of cyanamide with 4-arylpyrimidine 1-oxides

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Abstract

Pyrimidine 1-oxides with cyanamide afforded 2-ureidopyrimidines as the result of the nucleophilic substitution of hydrogen, whereas the formation of similar 2-trichloroacetylaminopyrimidines occurs as dipolar 1,3-cycloaddition of the same oxides to trichloroacetonitrile under much more drastic conditions and in lower yields.

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Prokhorov, A.M., Kozhevnikov, D.N., Rusinov, V.L. et al. Nucleophilic substitution or dipolar 1,3-cycloaddition in reactions of cyanamide with 4-arylpyrimidine 1-oxides. Russian Chemical Bulletin 52, 1195–1197 (2003). https://doi.org/10.1023/A:1024729912415

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  • DOI: https://doi.org/10.1023/A:1024729912415

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