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Dendrimers or Nanoparticles as Supports for the Design of Efficient and Recoverable Organocatalysts?
Author(s) -
Keller Michel,
Perrier Arnaud,
Linhardt Roland,
Travers Laurie,
Wittmann Sebastian,
Caminade AnneMarie,
Majoral JeanPierre,
Reiser Oliver,
Ouali Armelle
Publication year - 2013
Publication title -
advanced synthesis and catalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.541
H-Index - 155
eISSN - 1615-4169
pISSN - 1615-4150
DOI - 10.1002/adsc.201300120
Subject(s) - dendrimer , trimethylsilyl , catalysis , nanoparticle , carbon fibers , cobalt , polymer , chemistry , ether , chemical engineering , materials science , nanotechnology , organic chemistry , polymer chemistry , engineering , composite material , composite number
The Jørgensen–Hayashi catalyst [( S )‐α,α‐diphenylprolinol trimethylsilyl ether] was grafted onto the surface of two different supports: phosphorus dendrimers (generations 1 to 3) and magnetic, polymer‐coated cobalt/carbon (Co/C) nanobeads. These new supported catalysts displayed high activities and selectivities in the Michael additions of a wide range of aldehydes to different nitroolefins. Moreover, the dendrimer of the third generation displayed excellent recycling abilities since it could be recovered and reused in 7 consecutive runs without loss of activity.