A 1,2-Dibromosilene: Generation, spectroscopic observation, and isomerization to a silacyclohexane via facile 1,2-bromine shift

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Abstract

1,2-Dihalosilene is a hitherto unknown but potentially useful functionalizable compound for new silenes and silicon-carbon triply bonded species. We successfully generate 1,2-dibromosilene 1 by the reaction of tetrabromo derivative 2 with BuLi. The formation of 1 is confirmed by NMR studies and trapping experiments. Silene 1 survives under -80 °C, but 1 thermally isomerizes to silacyclohexane 6 via a 1,2-bromine shift to form bis(silyl)carbene 11 and the subsequent intramolecular C-H insertion.

Original languageEnglish
Pages (from-to)1155-1157
Number of pages3
JournalChemistry Letters
Volume46
Issue number8
DOIs
Publication statusPublished - 2017

Keywords

  • Bis(silyl)carbene
  • Bromine shift
  • Silene

ASJC Scopus subject areas

  • Chemistry(all)

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