Abstract
Diacetyl ketene N,S-acetal was used for the synthesis of 5-acetyl-6-amino-4-methylsulfanylpyrimidines substituted at the exocyclic nitrogen atom, which were further oxidized with m-chloroperbenzoic acid to the corresponding methylsulfonylpyrimidines. Reactions of hydrazines with these pyrimidines containing vicinal Ac and MeS (or MeSO2) groups were used for the preparation of new 4-aminopyrazolo[3,4-d]pyrimidine derivatives.
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Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 330–340, February, 2012.
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Komkov, A.V., Voronkova, V.A., Shashkov, A.S. et al. Synthesis of 4-aminopyrazolo[3,4-d]pyrimidine derivatives from 5-acetyl-6-amino-4-methylsulfanyl- or 5-acetyl-6-amino-4-methylsulfonylpyrimidines. Russ Chem Bull 61, 332–342 (2012). https://doi.org/10.1007/s11172-012-0046-1
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DOI: https://doi.org/10.1007/s11172-012-0046-1