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Fréchet‐Type Pallado‐Dendrimers Containing Bis(pyrazolyl)methane Ligands
Author(s) -
SánchezMéndez Alberto,
de Jesús Ernesto,
Flores Juan C.,
GómezSal Pilar
Publication year - 2010
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200900869
Subject(s) - chemistry , palladium , dendrimer , cationic polymerization , methyl acrylate , catalysis , methane , aryl , medicinal chemistry , ether , polymer chemistry , stereochemistry , organic chemistry , copolymer , alkyl , polymer
Neutral and cationic {bis(3,5‐dimethylpyrazol‐1‐yl)methane}palladium(II) complexes of general formula [PdClX{RCH(3,5‐Me 2 pz) 2 }] (X = Cl or Me) or [PdMe(MeCN){RCH(3,5‐Me 2 pz) 2 }][BAr f 4 ], where R is a benzyl or benzyloxycarbonyl group or a poly(aryl ether) Fréchet‐type dendron, have been synthesized and fully characterized, including by X‐ray diffraction methods in some cases. These palladium complexes have been evaluated as catalyst precursors in the Heck reaction between para ‐iodotoluene and methyl acrylate. The active catalytic species formed from these precursors are apparently not coordinated to the bis(pyrazolyl)methane ligands.