Abstract:
Imidazolone-activated donor–acceptor cyclopropanes undergo alcohol-assisted ring opening under the co-action of p-toluenesulfonic acid. Under the optimized conditions, cyclopropanes and alcohols are coupled in 1,3-fashion with the retention of heterocyclic fragment. Substrates with aromatic donor groups provide the addition products in 75–99% yields as mixtures of two diastereomers.
Keywords:
donor–acceptor cyclopropanes, spirocyclic compounds, imidazolones, alcohols, nucleophilic ring opening.
Citation:
V. A. Ikonnikova, E. A. Zhigileva, A. V. Kuleshov, V. V. Shirokova, M. S. Baranov, A. A. Mikhaylov, “Nucleophilic ring opening of imidazolone activated donor–acceptor cyclopropanes with alcohols”, Mendeleev Commun., 31:5 (2021), 657–658
Linking options:
https://www.mathnet.ru/eng/mendc1013
https://www.mathnet.ru/eng/mendc/v31/i5/p657
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