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Silver-Assisted [3 + 2] Annulation of Nitrones with Isocyanides: Synthesis of 2,3,4-Trisubstituted 1,2,4-Oxadiazolidin-5-ones

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NIAID Data Ecosystem2026-03-11 收录
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https://figshare.com/articles/dataset/Silver-Assisted_3_2_Annulation_of_Nitrones_with_Isocyanides_Synthesis_of_2_3_4-Trisubstituted_1_2_4-Oxadiazolidin-5-ones/11878161
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A silver-assisted method for [3 + 2] annulation of nitrones with isocyanides has been developed. The developed protocol allows access to a variety of 2,3,4-trisubstituted 1,2,4-oxadiazolidin-5-one derivatives as single diastereomers in good to excellent yields using silver oxide as the catalyst and molecular oxygen as the terminal oxidant. A plausible mechanism involving a nucleophilic addition/cyclization/protodeargentation/oxidation pathway is proposed on the basis of experimental results.
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2020-02-04
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