A simple method for the synthesis of 2-benzylazaspiro[4.4]nonanes via the reaction of low reactivity ethylidenecyclopentane derivatives with N-benzyl azomethine ylide obtained in situ was proposed.
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The study was carried out with the support of the Russian Foundation for Basic Research within the framework of the scientific project No. 18-33-00075 mol_a.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, 2019, 55(7), 676–678
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Zaitseva, E.R., Smirnov, A.Y., Baleeva, N.S. et al. Synthesis of spirocyclic pyrrolidines from cyclopentylideneacetic acid derivatives. Chem Heterocycl Comp 55, 676–678 (2019). https://doi.org/10.1007/s10593-019-02516-3
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DOI: https://doi.org/10.1007/s10593-019-02516-3