4.8 Article

Electrophilic Difluoro(phenylthio)methylation: Generation, Stability, and Reactivity of α-Fluorocarbocations

Journal

ORGANIC LETTERS
Volume 15, Issue 22, Pages 5666-5669

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ol402631t

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Funding

  1. Center of Excellence for Innovation in Chemistry (PERCH-CIC)
  2. Office of the Higher Education Commission
  3. Mahidol University under the National Research Universities Program of Thailand

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Electrophilic difluoro(phenylthio)methylation of allylsilanes has been achieved using bromodifluoro(phenylthio)methane (PhSCF2Br) and silver hexafluoroantimonate (AgSbF6). The structural assignment and observation of alpha-fluorocarbocation were substantiated by NMR and theoretical calculations. Detailed mechanistic and electronic studies have provided a fundamental understanding of the reactivity and stability of the difluoro(phenylthio)methylium cation (PhSCF2+).

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