期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 56, 期 37, 页码 11242-11247出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201702478
关键词
chitosan; cobalt; hydrodehalogenation; hydrogen; non-noble metals
资金
- state of Mecklenburg Vorpommern
- F. Hoffmann-La Roche AG
Hydrodehalogenation is a straightforward approach for detoxifications of harmful anthropogenic organohalide-based pollutants, as well as removal of halide protecting groups used in multistep syntheses. A novel sustainable catalytic material was prepared from biowaste (chitosan) in combination with an earth-abundant cobalt salt. The heterogeneous catalyst was fully characterized by transmission electron microscope, X-ray diffraction, and X-ray photoelectron spectroscopy measurements, and successfully applied to hydrodehalogenation of alkyl and (hetero) aryl halides with broad scope (> 40 examples) and excellent chemoselectivity using molecular hydrogen as a reductant. The general usefulness of this method is demonstrated by successful detoxification of non-degradable pesticides and fire retardants. Moreover, the potential of the catalyst as a deprotection tool is demonstrated in a multistep synthesis of (+)-peronatin B (alkaloid).
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