Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 19, Pages 7501-7507Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201915526
Keywords
amines; cobalt; dehydrogenation; heterogeneous catalysis; imines
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Funding
- Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung Funding Source: Medline
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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 equivalent to C and C equivalent to N) and amino acid derivatives.
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