期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 134, 期 29, 页码 12002-12009出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja304401u
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资金
- AFOSR [FA9550-10-1-0170]
- NSF [CHE-0952753, CHE-1111563]
- Australian Research Council
- Direct For Mathematical & Physical Scien [1111563] Funding Source: National Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [0952753] Funding Source: National Science Foundation
- Division Of Chemistry [1111563] Funding Source: National Science Foundation
Oxidation of binuclear Pd(II) complexes with PhICl2 or PhI(OAc)(2) has previously been shown to afford binuclear Pd(III) complexes featuring a Pd-Pd bond. In contrast, oxidation of binuclear Pd(II) complexes with electrophilic trifluoromethylating (CF3+) reagents has been reported to afford mononuclear Pd(IV) complexes. Herein, we report experimental and computational studies of the oxidation of a binuclear Pd(II) complex with CF3+ reagents. These studies suggest that a mononuclear Pd(IV) complex is generated by an oxidation-fragmentation sequence proceeding via fragmentation of an initially formed, formally binuclear Pd(III), intermediate. The observation that binuclear Pd(III) and mononuclear Pd(IV) complexes are accessible in the same reactions offers an opportunity for understanding the role of nuclearity in both oxidation and subsequent C-X bond-forming reactions.
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