Selective Acceptorless Dehydrogenation of Primary Amines to Imines by Core–Shell Cobalt Nanoparticles

Xinjiang Cui, Wu Li, Kathrin Junge, Zhaofu Fei, Matthias Beller, Paul J. Dyson

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

Core–shell nanocatalysts are attractive due to their versatility and stability. Here, we describe cobalt nanoparticles encapsulated within graphitic shells prepared via the pyrolysis of a cationic poly-ionic liquid (PIL) with a cobalt(II) chloride anion. The resulting material has a core–shell structure that displays excellent activity and selectivity in the self-dehydrogenation and hetero-dehydrogenation of primary amines to their corresponding imines. Furthermore, the catalyst exhibits excellent activity in the synthesis of secondary imines from substrates with various reducible functional groups (C=C, C≡C and C≡N) and amino acid derivatives.

Original languageEnglish
Pages (from-to)7501-7507
Number of pages7
JournalAngewandte Chemie International Edition in English
Volume59
Issue number19
DOIs
StatePublished - 4 May 2020
Externally publishedYes

Keywords

  • amines
  • cobalt
  • dehydrogenation
  • heterogeneous catalysis
  • imines

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