An efficient procedure for protection of carbonyls in Brønsted acidic ionic liquid [Hmim]BF4

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Abstract

Protection of carbonyls as acetals or ketals using Brønsted acidic ionic liquid [Hmim]BF4 as catalyst as well as solvent was investigated. Satisfactory results were obtained for the protection of carbonyls as cycloacetals or ketals with diols. The product can be separated conveniently from the reaction system, and the ionic liquid can be reused after removal of water.

Original languageEnglish
Pages (from-to)4963-4965
Number of pages3
JournalTetrahedron Letters
Volume45
Issue number25
DOIs
StatePublished - 14 Jun 2004

Keywords

  • Carbonyls
  • Ionic liquid
  • Protection

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