2006
DOI: 10.1021/om060889d
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Intermolecular Cross-Coupling of Simple Arenes via C−H Activation by Tuning Concentrations of Arenes and TFA

Abstract: Formation of unsymmetrical biaryls from simple arenes has been achieVed successfully in a catalytic system of Pd(OAc) 2 /CF 3 CO 2 H(TFA)/K 2 S 2 O 8 just by tuning the concentrations of arenes and TFA under mild conditions. A proposed mechanism containing two-step aromatic C-H actiVation on this noVel intermolecular cross-coupling of arenes is also suggested and partly supported by experiments.

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Cited by 230 publications
(106 citation statements)
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“…In more recent studies, Lu and co-workers described palladiumcatalyzed oxidative coupling reactions between two unfunctionalized arenes in the presence of K 2 S 2 O 8 (Scheme 41). [77,78] Although the yields were relatively low, the reaction occurred under mild conditions. With respect to ensuring regioselectivity, a noteworthy alternative to the above-mentioned cross-dehydrogenative coupling reactions is represented by palladium-catalyzed decarboxylative [79][80][81] direct arylation.…”
Section: Dehydrogenative Arylationmentioning
confidence: 99%
“…In more recent studies, Lu and co-workers described palladiumcatalyzed oxidative coupling reactions between two unfunctionalized arenes in the presence of K 2 S 2 O 8 (Scheme 41). [77,78] Although the yields were relatively low, the reaction occurred under mild conditions. With respect to ensuring regioselectivity, a noteworthy alternative to the above-mentioned cross-dehydrogenative coupling reactions is represented by palladium-catalyzed decarboxylative [79][80][81] direct arylation.…”
Section: Dehydrogenative Arylationmentioning
confidence: 99%
“…Große Fortschritte wurden dabei von Lu und Mitarbeitern durch Pd II / Pd 0 -Katalyse erzielt, obgleich das Produktverhältnis der Heterokupplung und Homokupplung für die breite präparative Anwendung noch nicht befriedigend ist (Schema 51). [77] Der Austausch eines Arenpartners gegen einen elektronenreichen Heterocyclus verbesserte die Selektivität für die Heterokupplung wesentlich (Schema 52). [78] Itahara et al berichtetem zuvor über die substöchiometrische Kupplung von N-Acetylindol mit Benzol.…”
Section: Kupplung Von C(aryl)-h-bindungen Mit Arenen: Eine Verwandte unclassified
“…[73] Während die Methode von Shi et al den Einsatz stö-chiometrischer oder cokatalytischer Mengen Kupfer(II)-Salze erfordert, [73] [77,78] Die Ausbeuten waren relativ niedrig, die Reaktion verlief aber unter sehr milden Bedingungen.…”
Section: Eisenkatalysierte Direkte Arylierungen Mit Metallorganischenunclassified