Tandem C(sp2)–OMe Activation/C(sp2)–C(sp2) Coupling in Early Transition-Metal Complexes: Aromatic C–O Activation beyond Late Transition Metals

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• 作者：Vasily Radkov ; Thierry Roisnel ; Alexander Trifonov ; Jean-François Carpentier ; Evgueni Kirillov
• 刊名：Journal of the American Chemical Society
• 出版年：2016
• 出版时间：April 6, 2016
• 年：2016
• 卷：138
• 期：13
• 页码：4350-4353
• 全文大小：321K
• ISSN：1520-5126

文摘

We report on combined structural, kinetic, and computational studies unraveling the mechanism of a unique, highly selective intramolecular C(sp²)–OMe cleavage/C(sp²)–C(sp²) coupling tandem reaction in group 3 metal (Y and Sc) complexes of amidine-amidopyridinate ligands. The latter process represents a rare stoichiometric model of the nonredox cleavage of inert C(sp²)–O bonds relevant to cross-coupling reactions of aromatic ethers catalyzed by late transition metals.