In situ IR and NMR spectroscopic investigation of the formation and structure of protonated diacetylketene tetrachloroaluminate

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Abstract

In situ IR and multinuclear NMR are used to monitor the formation of protonated diacetylketene tetrachloroaluminate (1) in the reaction of acetyl chloride and AlCl3 in both dichloromethane and in 1-butyl-3-methylimidazolium chloride ([bmim]Cl). The existence of a fast equilibrium between two enolic forms of protonated diacetylketene (with [AlCl4] as the counterion) is established. The structure of 1 is determined by the rarely used 13C(1H)–13C(1H) COSY experiment.

Original languageEnglish
Pages (from-to)2861-2865
Number of pages5
JournalJournal of the Chemical Society. Perkin Transactions 1
Volume2
Issue number24
DOIs
Publication statusPublished - Aug 29 2002

ASJC Scopus subject areas

  • Chemistry(all)

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