Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 133, Issue 15, Pages 5732-5735Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja200957n
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Funding
- National Science Foundation [CHE-9629688, CHE-0543585]
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Benzoquinone (BQ) and O-2 are among the most common stoichiometric oxidants in Pd-catalyzed oxidation reactions. The present study provides rare insights into mechanistic differences between BQ and O-2 in their reactivity with a well-defined Pd-hydride complex, Pd(IMes)(2)(H)(O2CPh) (1). BQ promotes the reductive elimination of PhCO2H from 1 and catalyzes the formation of a Pd-II-OOH complex when this reaction is carried out under aerobic conditions. These results have important implications for Pd-catalyzed oxidation reactions.
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