Perrhenic acid as catalyst for hydrosilylation of aldehydes and ketones and dehydrogenative silylation of alcohols

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Abstract

Hydrosilylation of aldehydes and ketones with dimethylphenylsilane was catalyzed by perrhenic acid, HReO4, to give silylated ethers in good yields. These hydrosilylation reactions appear to be radical processes, since they were inhibited in the presence of 5,5-dimethyl-4,5-dihydro-3H-pyrrole-N-oxide (DMPO) and Ph2NH, two well-known radical scavengers. Perrhenic acid also catalyzes the dehydrogenative silylation of alcohols in neat conditions at 25 °C. It is selective for the silylation of hydroxyl groups in the presence of alkenes and alkyl halides (RCl).

Original languageEnglish
Pages (from-to)1057-1059
Number of pages3
JournalCatalysis Communications
Volume8
Issue number7
DOIs
Publication statusPublished - 1 Jul 2007

Keywords

  • Dehydrogenative silylation
  • Hydrosilylation
  • Oxides
  • Perrhenic acid
  • Rhenium

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