Schmitt HL, Martymianov D, Green O, Delcaillau T, Park Kim YS, Morandi B. Regiodivergent Ring-Expansion of Oxindoles to Quinolinones.
J Am Chem Soc 2024;
146:4301-4308. [PMID:
38335924 PMCID:
PMC10885155 DOI:
10.1021/jacs.3c12119]
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Abstract
The development of divergent methods to expedite structure-activity relationship studies is crucial to streamline discovery processes. We developed a rare example of regiodivergent ring expansion to access two regioisomers from a common starting material. To enable this regiodivergence, we identified two distinct reaction conditions for transforming oxindoles into quinolinone isomers. The presented methods proved to be compatible with a variety of functional groups, which enabled the late-stage diversification of bioactive oxindoles as well as facilitated the synthesis of quinolinone drugs and their derivatives.
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