Conclusions
When tetraaminopyrimidine is reacted with 1-arylsulfony1-4-methylimidazolin-2-ones, the presence of an electron-donor substituent in the aromatic ring of the arylsulfamido moiety favors the formation of 6-methy1-2,4-diaminopteridine, while an electron-acceptor substituent favors the formation of the isomeric 7-methyl-2,4-diaminopteridine.
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1910–1913, August, 1982.
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Zav'yalov, S.I., Zavozin, A.G. Reaction of tetraaminopyrimidine with 1-arylsulfonyl-4-methylimidazolin-2-ones. Russ Chem Bull 31, 1700–1703 (1982). https://doi.org/10.1007/BF00956918
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DOI: https://doi.org/10.1007/BF00956918