A scalable de novo synthesis of difluoromethyl pyridines from inexpensive materials is reported. The pyridyl subunit is built around the difluoromethyl group rather than a late stage introduction of this moiety. This user-friendly approach allows access to a diverse range of substitution patterns on all positions on the ring system and on the difluoromethyl group.
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http://dx.doi.org/10.1021/ol500402e | DOI Listing |
Chem Commun (Camb)
January 2025
School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, Jiangxi, 330031, China.
We present a highly efficient and versatile nickel-catalyzed protocol for the reductive cross-coupling of unactivated CFH-substituted electrophiles with a wide variety of aryl and alkenyl halides. This novel approach offers high catalytic reactivity and broad functional group compatibility, enabling late-stage fluoroalkylation of drug molecules.
View Article and Find Full Text PDFNat Commun
January 2025
Department of Pharmacy, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.
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.
View Article and Find Full Text PDFNat Commun
January 2025
Department of Chemistry, Graduate School of Science, Hokkaido University, Sapporo, Japan.
Organofluorine compounds have greatly benefited the pharmaceutical, agrochemical, and materials sectors. However, they are plagued by concerns associated with Per- and Polyfluoroalkyl Substances. Additionally, the widespread use of the trifluoromethyl group is facing imminent regulatory scrutiny.
View Article and Find Full Text PDFJACS Au
November 2024
School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, P. R. China.
The incorporation of aromatic difluoromethyl motifs has proven to be a fruitful strategy for enhancing the therapeutic profiles of modern pharmaceutical candidates. While the defluorofunctionalization of trifluoromethylarenes offers a promising pathway toward diverse aromatic difluoromethyl compounds, current methods are predominantly limited to two-component reactions. Multicomponent cascade reactions (MCRs) involving a transient aromatic difluoromethyl radical are still uncommon and highly sought after, owing to their capacity to rapidly generate challenging molecular structures.
View Article and Find Full Text PDFChem Sci
December 2024
School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology Nanjing 210094 China
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