Palladium(I)-Bridging Allyl Dimers for the Catalytic Functionalization of CO2

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• 作者：Damian P. Hruszkewycz ; Jianguo Wu ; Nilay Hazari ; Christopher D. Incarvito
• 刊名：Journal of the American Chemical Society
• 出版年：2011
• 出版时间：March 16, 2011
• 年：2011
• 卷：133
• 期：10
• 页码：3280-3283
• 全文大小：807K
• 年卷期：v.133,no.10(March 16, 2011)
• ISSN：1520-5126

文摘

In general, the chemistry of both 畏¹-allyl and 畏³-allyl Pd complexes is extremely well understood; 畏¹-allyls are nucleophilic and react with electrophiles, whereas 畏³-allyls are electrophilic and react with nucleophiles. In contrast, relatively little is known about the chemistry of metal complexes with bridging allyl ligands. In this work, we describe a more efficient synthetic methodology for the preparation of Pd^I-bridging allyl dimers and report the first studies of their stoichiometric reactivity. Furthermore, we show that these compounds can activate CO₂ and that an N-heterocyclic carbene-supported dimer is one of the most active and stable catalysts reported to date for the carboxylation of allylstannanes and allylboranes with CO₂.