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Beilstein J. Org. Chem. 2022, 18, 469–478, doi:10.3762/bjoc.18.49
Graphical Abstract
Figure 1: Representative bioactive dispirooxindoles.
Scheme 1: Reductive cyclization for the synthesis of dispirocyclopentanebisoxindole derivatives.
Scheme 2: Substrate scope of product 3 (part 1). Reaction conditions: substrates: 1 (1 mmol) and 2 (0.5 mmol)...
Scheme 3: Substrate scope of product 3 (part 2). Reaction conditions: substrates: 1 (1 mmol) and 2 (0.5 mmol)...
Figure 2: ORTEP diagram of product 3g (CCDC NO. 2072521).
Figure 3: NOESY Spectra of compound 3e.
Scheme 4: Plausible mechanism of the reaction.
Figure 4: HRMS spectrum of the crude reaction mixture after 1 hour of the reaction.
Scheme 5: Control experiment.