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A Highly Recyclable Magnetic Core‐Shell Nanoparticle‐Supported TEMPO catalyst for Efficient Metal‐ and Halogen‐Free Aerobic Oxidation of Alcohols in Water
Author(s) -
Karimi Babak,
Farhangi Elham
Publication year - 2011
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201100047
Subject(s) - catalysis , alcohol oxidation , halogen , allylic rearrangement , chemistry , nanoparticle , steric effects , magnetic nanoparticles , metal , chemical engineering , organic chemistry , nanotechnology , materials science , alkyl , engineering
Upping the tempo! A new, stable, TEMPO‐based organocatalyst, supported on magnetic iron nanoparticles, provides a highly efficient heterogeneous catalyst 1 for the metal‐ and halogen‐free aerobic oxidation of a wide range of primary, secondary, allylic, and even sterically hindered alcohols in water. After use, the catalyst was magnetically separated (see image) and reused for 20 consecutive rounds of reaction, without any significant loss in catalytic activity.