Selective and stepwise bromodemethylation of the silyl ligand in iron(II) silyl complexes with boron tribromide

Takahito Watanabe, Hisako Hashimoto, Hiromi Tobita

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5 Citations (Scopus)

Abstract

Treatment of Cp*(CO)2FeSiMe2R (Cp* = C5Me5, R = Me and Ph) with 1 equiv of BBr3 at room temperature afforded Cp*(CO)2FeSiBrMeR (R = Me and Ph) and MeBBr2 in high yields via bromodemethylation of the silyl ligand. Cp*(CO)2FeSiBrMeR (R = Me and Ph) was further converted to Cp*(CO)2FeSiBr2R (R = Me and Ph) quantitatively on addition of another equivalent of BBr3 and heating. Treatment of Cp*(CO)2FeSiMe2SiMe3 with 1 equiv of BBr3 at room temperature led to selective bromodemethylation at the α-silicon atom to produce Cp*(CO)2FeSiBrMeSiMe 3, which was also converted to Cp*(CO)2FeSiBr 2SiMe3 on heating with another equivalent of BBr 3 at 40°C in quantitative yield. The solid-state structure of Cp*(CO)2FeSiBr2SiMe3 was confirmed by X-ray crystal structure determination.

Original languageEnglish
Pages (from-to)4150-4153
Number of pages4
JournalOrganometallics
Volume23
Issue number17
DOIs
Publication statusPublished - 2004 Aug 16

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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