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CF2H-synthon enables asymmetric radical difluoroalkylation for synthesis of chiral difluoromethylated amines
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CF2H-synthon enables asymmetric radical difluoroalkylation for synthesis of chiral difluoromethylated amines
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CF2H-synthon enables asymmetric radical difluoroalkylation for synthesis of chiral difluoromethylated amines
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Journal Article
CF2H-synthon enables asymmetric radical difluoroalkylation for synthesis of chiral difluoromethylated amines
2025
Overview
The difluoromethyl group is a crucial fluorinated moiety with distinctive biological properties, and the synthesis of chiral CF₂H-containing analogs has been recognized as a powerful strategy in drug design. To date, the most established method for accessing enantioenriched difluoromethyl compounds involves the enantioselective functionalization of nucleophilic and electrophilic CF₂H synthons. However, this approach is limited by lower reactivity and reduced enantioselectivity. Leveraging the unique fluorine effect, we design and synthesize a radical CF₂H synthon by incorporating isoindolinone into alkyl halides for asymmetric radical transformation. Here, we report an efficient strategy for the asymmetric construction of carbon stereocenters featuring a difluoromethyl group via nickel-catalyzed Negishi cross-coupling. This approach demonstrates mild reaction conditions and excellent enantioselectivity. Given that optically pure difluoromethylated amines and isoindolinones are key structural motifs in bioactive compounds, this strategy offers a practical solution for the efficient synthesis of CF₂H-containing chiral drug-like molecules.
The difluoromethyl group is a crucial fluorinated moiety, and the synthesis of chiral CF₂H-containing analogs is a powerful strategy in drug design and screening. Here, the authors report a strategy for the asymmetric construction of carbon stereocenters featuring a difluoromethyl group via nickel-catalyzed Negishi cross-coupling.
