Enantioselective Borylative Functionalization of Internal Alkenes: A Platform for Constructing Vicinal Stereocenters†

Vicinal stereogenic centers are ubiquitous structural scaffolds in both natural products and synthetic compounds, yet their enantioselective construction remains a significant challenge in organic synthesis. Organoboron compounds are of paramount importance in synthetic chemistry due to their ability to undergo facile transformations, yielding diverse essential chemical bonds such as carbon-carbon, carbon-oxygen, carbon-nitrogen, and carbon-halogen bonds. Transition-metal-catalyzed asymmetric borylative functionalizations of internal alkenes offer a promising strategy for the enantioselective installation of two adjacent chiral centers across carbon-carbon bonds. By leveraging the versatile transformations of the newly introduced boryl unit, this approach holds great potential for expanding the structural diversity of vicinal stereogenic scaffolds. In this concise review, we aim to highlight recent advancements in transition-metal-catalyzed asymmetric borylative functionalizations of internal alkenes, underscore their utility as a versatile approach for constructing vicinal stereogenic centers, and discuss unsolved challenges and future directions in this field.

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