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• W2102885909 endingPage "n/a" @default.
• W2102885909 startingPage "n/a" @default.
• W2102885909 abstract "Carbonnitrogen bond formation can be catalyzed by copper in very low concentrations (≈100 ppm), with mechanistic features that are distinct from those in the high-concentration regime. The reaction was studied by initial rate kinetics, competitive Hammett studies, and DFT calculations. The deprotonation of the model nucleophile, pyrrole, is limited by mass transfer with the heterogeneous base. The positive reaction order in dimethylethylenediamine was explained by this reagent working not only as a ligand to Cu, but also as a facilitator for mass transfer. The selectivity-determining step in the competitive Hammett study is oxidative addition. Alternative mechanisms for this step, such as single-electron transfer, atom transfer, or σ-bond metathesis, can be excluded based on the observed Hammett behavior and DFT calculations." @default.
• W2102885909 created "2016-06-24" @default.
• W2102885909 creator A5007498431 @default.
• W2102885909 creator A5017286408 @default.
• W2102885909 creator A5080715730 @default.
• W2102885909 date "2014-01-01" @default.
• W2102885909 modified "2023-10-17" @default.
• W2102885909 title "Mechanistic Aspects of Submol % Copper-Catalyzed CN Cross-Coupling" @default.
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