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Published on: January 19, 2016
Photoredox-Catalyzed Radical Dideuterofluoromethylation Using a Cyclic Sulfoximine Scaffold
Gabriel Goujon1, Ivo Leito2, Märt Lõkov2
1Université Paris-Saclay, UVSQ, CNRS, UMR 8180, Institut Lavoisier de Versailles, 78035 Versailles Cedex, France.
Researchers developed novel reagents for incorporating non-PFAS fluorinated motifs like CD2F and CF2D, crucial for medicinal chemistry. This work provides new tools for drug discovery, avoiding controversial per- and polyfluoroalkyl substances (PFAS).
Area of Science:
- Medicinal Chemistry
- Organic Synthesis
- Isotope Chemistry
Background:
- Fluorine and deuterium are vital in medicinal chemistry.
- Per- and polyfluoroalkyl substances (PFAS) face controversy, necessitating alternative reagents.
- Previous work utilized cyclic sulfoximines as synthetic reagents.
Purpose of the Study:
- To develop novel reagents for introducing non-PFAS fluorinated motifs (CD2F and CF2D).
- To synthesize and characterize new cyclic sulfoximine reagents.
- To compare the properties and reactivity of cyclic and open analogues.
Main Methods:
- Synthesis of novel cyclic sulfoximines.
- Measurement of pKa values for comparison.
- Preparation of deuterated analogues.
- Evaluation of reagents as radical sources.
Main Results:
- Successful synthesis of new cyclic sulfoximines containing CD2F and CF2D fragments.
- Comparison of pKa values revealed differences between cyclic and open analogues.
- Deuterated versions of the target compounds were accessed.
- Cyclic and open fragments demonstrated utility as reagents and radical sources.
Conclusions:
- The developed reagents offer a non-PFAS alternative for incorporating valuable fluorinated motifs in drug discovery.
- Cyclic sulfoximines provide a stable and effective platform for accessing these novel fluorinated building blocks.
- This research expands the toolkit for medicinal chemists seeking to leverage fluorine and deuterium in molecular design.
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