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Recent advances in the catalytic synthesis of 3-aminooxindoles: an update.

3-Substituted-3-aminooxindoles are versatile scaffolds and they are common core structural motifs found in many natural products and biologically active compounds. In the last few years, a variety of synthetic methodologies have been developed for the synthesis of this moiety. In this review, we are presenting the recent advances in the catalytic synthesis of 3-aminooxindole derivatives.