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Metallodendritic Catalysis for Redox and CarbonCarbon Bond Formation Reactions: A Step towards Green Chemistry.
Author(s) -
Astruc Didier,
Heuzé Karine,
Gatard Sylvain,
Méry Denise,
Nlate Sylvain,
Plault Lauriane
Publication year - 2005
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.200404247
Subject(s) - chemistry , catalysis , sonogashira coupling , redox , dendrimer , carbon fibers , cerium , metathesis , homogeneous catalysis , heterogeneous catalysis , organic chemistry , inorganic chemistry , combinatorial chemistry , palladium , polymerization , materials science , polymer , composite number , composite material
Metallodendritic catalysts combine the advantages of homogeneous and heterogeneous catalysts: they are soluble and perfectly well defined on the molecular level, and yet they can be recovered by precipitation, ultra‐filtration or ultra‐centrifugation (as biomolecules) and recycled several times. In this article, we summarize our recent work in this field with examples operating under ambient conditions in metathesis, Pd‐catalyzed Sonogashira coupling, redox catalysis of nitrate and nitrite cathodic reduction to ammonia and various oxidation reactions by H 2 O 2 catalyzed by polyoxometallates. The dendritic effects on the catalytic efficiencies are scrutinized, i.e., the comparison of the metallodentritic catalysts with their monomeric models and among the dendrimer generations. It is concluded that metallostars or low‐generation metallodendrimers usually are optimized catalysts in terms of efficiency and recovery/re‐use.