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CH Bond Activation by [{(Diimine)Pd(μ‐OH)} 2 ] 2+ Dimers: Mechanism‐Guided Catalytic Improvement
Author(s) -
Bercaw John E.,
Hazari Nilay,
Labinger Jay A.,
Oblad Paul F.
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200804455
Subject(s) - diimine , catalysis , chemistry , mechanism (biology) , reaction mechanism , photochemistry , stereochemistry , medicinal chemistry , combinatorial chemistry , physics , organic chemistry , quantum mechanics
Clearly different : The mechanism of CH activation by air‐ and water‐tolerant complexes of the type [{(diimine)Pd(μ‐OH)} 2 ] 2+ (see scheme; Ar= t Bu 2 C 6 H 3 , solv=MeOH or trifluoroethanol) and [(diimine)Pd(OH 2 ) 2 ] 2+ has been investigated. Surprisingly, there are significant mechanistic differences in activation by the dimeric Pd complex and the analogous Pt species , with the Pd species found to be considerably more reactive.