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Preparation and Reactions of Sulfides02:26

Preparation and Reactions of Sulfides

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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Bench-stable reagents for modular access to persulfuranyl scaffolds.

Renzhe Li1, Chang Liu1, Chao Hu1

  • 1Department of Biochemistry, The University of Texas Southwestern Medical Center, Dallas, TX, USA.

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Researchers developed a new method for pentafluorosulfanylation using stable reagents. This breakthrough expands access to SF5-containing molecules for various applications.

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Area of Science:

  • Organic Chemistry
  • Medicinal Chemistry
  • Materials Science

Background:

  • The pentafluorosulfanyl (SF5) group is a valuable isostere for tert-butyl and trifluoromethyl groups.
  • Previous synthetic methods for incorporating the SF5 group have been limited, hindering its widespread application.

Purpose of the Study:

  • To develop a general and accessible platform for pentafluorosulfanylation.
  • To expand the synthetic accessibility of molecules containing the SF5 group and related persulfuranyl moieties.

Main Methods:

  • A novel pentafluorosulfanylation platform utilizing bench-stable solid reagents.
  • Radical generation via decarboxylation and β-scission sequence.
  • Adaptable reagent design for other persulfuranyl groups (e.g., SCF3, SF5).

Main Results:

  • Established an operationally simple and general method for SF5 radical generation.
  • Enabled a variety of straightforward chemical transformations.
  • Demonstrated adaptability to synthesize trifluoromethyl tetrafluorosulfanyl and aryl tetrafluorosulfanyl compounds.

Conclusions:

  • The developed platform significantly enhances the accessibility of SF5-containing molecules.
  • This methodology provides practitioner-friendly access to challenging and biologically relevant sulfur(VI) entities.
  • The reagent design offers versatility for synthesizing diverse persulfuranyl compounds.