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Dendritic Phosphonates and the in situ Assembly of Polyperoxophosphotungstates: Synthesis and Catalytic Epoxidation of Alkenes with Hydrogen Peroxide
Author(s) -
Vasylyev Maxym V.,
Astruc Didier,
Neumann Ronny
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.200404207
Subject(s) - chemistry , hydrogen peroxide , tungstic acid , catalysis , phosphonate , acetonitrile , adamantane , dendrimer , solvent , aqueous solution , in situ , peroxide , organic chemistry , polymer chemistry , combinatorial chemistry
First and second‐generation rigid dendrimers based on polyphenylated tetrahedral adamantane cores with four or sixteen peripheral phosphonate moieties, PD1 and PD2, respectively, were synthesized and characterized. Further reaction of the dendritic phosphonates with tungstic acid in the presence of hydrogen peroxide led to the stepwise in situ formation of mono‐ and dinuclear phosphoperoxotungstates. These assemblies were effective catalysts for the epoxidation of alkenes in an aqueous acetonitrile solvent.