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The bisoxindole motif is present in a variety of biologically active compounds. Here, we report an enantioselective oxidative homocoupling reaction of 2-oxindoles in the presence of a chiral bisguanidinium hypoiodite catalyst, providing access to the corresponding optically active bisoxindoles in excellent yields and with moderate to high diastereo- and enantioselectivities.
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Odagi et al. (2024) studied this question.
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