Bimetallic Palladium Catalysis: Direct Observation of Pd(III)-Pd(III) Intermediates

被引:409
作者
Powers, David C. [1 ]
Geibel, Matthias A. L. [1 ]
Klein, Johannes E. M. N. [1 ]
Ritter, Tobias [1 ]
机构
[1] Harvard Univ, Dept Chem & Chem Biol, Cambridge, MA 02138 USA
关键词
FORMING REDUCTIVE ELIMINATION; C-H BONDS; OXIDATIVE FUNCTIONALIZATION; COMPLEXES; SUBSTITUTION; ARYLATION; PLATINUM; CARBON;
D O I
10.1021/ja906935c
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Phl(OAc)(2) is a common oxidant for Pd-catalyzed C-H bond functionalizations. Mechanistic hypotheses since the 1960s have suggested a Pd(II)/Pd(IV) mechanism. Here we present evidence for the relevance of bimetallic Pd(III) complexes to catalysis. A bimetallic Pd(III) acetate was isolated and can afford product by bimetallic reductive elimination.
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页码:17050 / +
页数:4
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