Acceleration of halogen-exchange reaction of lead(II) fluoride in organic solvent

Junko Ichihara, Masao Takahashi, Shuichi Emura, Tatsunori Tochio, Yoshiaki Ito, Takeshi Mukoyama

Research output: Contribution to journalArticle

Abstract

A combination of lead (II) fluoride and a small amount of sodium bromide accelerates the halogen-exchange reaction of benzyl bromide to benzyl fluoride in acetonitrile. By analyzing Br K-EXAFS for both the combined reagent and aliquots taken from the reaction mixture, bromide-participating species has been found in both the combined reagent and the initial stage of the reaction. Such species disappeared with proceeding of the reaction and a new lead compound, Pb3.0 Br1.1F5.9 (1) was formed. The evidence suggests that the bromide-participating species initially formed in the combined process between lead fluoride and sodium bromide act the high reactivity for the organic fluorination.

Original languageEnglish
Pages (from-to)602-603
Number of pages2
JournalJournal of Synchrotron Radiation
Volume6
Issue number3
DOIs
Publication statusPublished - May 1 1999

Keywords

  • Br K-EXAFS
  • Combined solid reagent
  • Lead fluoride
  • Organic fluorination

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Instrumentation

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