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Another method of radical formation is the elimination process. It is the opposite of the addition route and is driven by the instability of the radical. For example, as depicted in Figure 1, dibenzoyl peroxide yields a pair of unstable radicals upon homolysis. Given its instability, this radical spontaneously undergoes elimination via a C–C bond cleavage to form a relatively more stable phenyl radical. The mechanism involves cleavage of the bond between the α and β positions...
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Radicals adjacent to electron-donating groups are called nucleophilic radicals. These radicals readily react with electrophilic alkenes. The SOMO–LUMO interactions are the driving force for the reaction, where the high-energy SOMO of the electron-rich, nucleophilic radicals interacts with the low-energy LUMO of the electron-deficient, electrophilic alkenes. Such SOMO–LUMO interactions are the basis of reactive radical traps, affecting the selectivity in radical reactions. For...
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Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
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Radicals can be formed by adding a radical to a spin-paired molecule. This is typically observed with unsaturated species, where the addition of a radical across the π bond leads to the production of a new radical by dissolving the π bond. For example, the addition of a Br radical to an alkene yields a carbon-centered radical.
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Catalytic Decarboxylative Radical Sulfinylation.

Shi-Hui He1, Guang-Le Chen1, Xing-Yu Gong1

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Summary
This summary is machine-generated.

This study introduces a new method for creating functionalized sulfoxides using dual photoredox and copper catalysis. This practical and scalable approach enables the modification of complex molecules, including pharmaceuticals.

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Area of Science:

  • Organic Chemistry
  • Catalysis
  • Medicinal Chemistry

Background:

  • Sulfoxides are crucial components in many biologically active compounds.
  • Existing methods for sulfoxide synthesis can be limited in scope or require harsh conditions.

Purpose of the Study:

  • To develop a mild, redox-neutral method for synthesizing functionalized sulfoxides.
  • To enable late-stage functionalization of complex molecules, including pharmaceuticals.

Main Methods:

  • Utilized dual photoredox and copper catalysis.
  • Employed redox-active esters derived from carboxylic acids.
  • Investigated the reaction with various carboxylic acid types (tertiary, secondary, primary).

Main Results:

  • Successfully synthesized a diverse range of functionalized sulfoxides.
  • Demonstrated wide functional group compatibility.
  • Confirmed the reaction's scalability and practicality.

Conclusions:

  • The developed method offers a versatile and efficient route to sulfoxides.
  • This approach is valuable for late-stage modification of pharmaceutical compounds.
  • The reaction's mild conditions and broad scope enhance its utility in synthetic chemistry.