A new microwave-assisted, three-component reaction of 5-aminopyrazole-4-carboxylates: Selective synthesis of substituted 5-aza-9-deaza-adenines

Felicia Phei Lin Lim, Nathan R. Halcovitch, Edward R.T. Tiekink, Anton V. Dolzhenko

    Research output: Contribution to journalArticleResearchpeer-review

    11 Citations (Scopus)


    A series of 5-aza-9-deaza- analogues of purine was effectively prepared using highly selective annulation of 1,3,5-triazine ring onto 5-aminopyrazole-4-carboxylates via a one-pot, multicomponent, microwave-assisted approach. The products were obtained in good yields and high purity. This catalyst-free method was demonstrated to be scalable and highly reproducible in different microwave reactors. Some structural features of the prepared compounds were studied in details using dynamic NMR spectroscopy and X-ray crystallography.

    Original languageEnglish
    Pages (from-to)1868-1879
    Number of pages12
    Issue number15
    Publication statusPublished - 12 Apr 2018


    • Dynamic NMR spectroscopy
    • Multicomponent reaction
    • Purine isostere
    • Pyrazole
    • Pyrazolo[1,5-a][1,3,5]triazine
    • Triazine

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