An improved seven-step synthesis of 4-chloro-7H-pyrrolo[2,3-d]pyrimidine from dimethyl malonate with 31% overall yield is described. The procedure is operationally simple and practical for the synthesis of the 4-chloro-7H-pyrrolo[2,3-d]pyrimidine building block.
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This research was financially supported by The National Key Technology R&D Program (No. 2015BAK45B00). We also thank the Laboratory of Organic Functional Molecules, the Sino-French Institute of ECNU for support.
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Published in Khimiya Geterotsiklicheskikh Soedinenii, 2018, 54(6), 638–642
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Zhang, YL., Xu, CT., Liu, T. et al. An improved synthesis of 4-chloro-7H-pyrrolo[2,3-d]pyrimidine. Chem Heterocycl Comp 54, 638–642 (2018). https://doi.org/10.1007/s10593-018-2320-0
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DOI: https://doi.org/10.1007/s10593-018-2320-0