2004
DOI: 10.1016/j.tet.2004.04.070
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Palladium complexes with ethylene-bridged bis(N-heterocyclic carbene) for C–C coupling reactions

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Cited by 162 publications
(105 citation statements)
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References 29 publications
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“…Quarternary ammonium bromides, such as TBAB, were found to be highly beneficial. The relatively low activity of 92 was later confirmed independently by Lee et al [169] as well as Biffis and co-workers. [241] Lee and co-workers explored a range of N-benzyl-substituted chelating, doubly ligated Pd-NHC complexes.…”
Section: Carbopalladations Of Alkenes and The Heck-mizoroki Reactionmentioning
confidence: 60%
“…Quarternary ammonium bromides, such as TBAB, were found to be highly beneficial. The relatively low activity of 92 was later confirmed independently by Lee et al [169] as well as Biffis and co-workers. [241] Lee and co-workers explored a range of N-benzyl-substituted chelating, doubly ligated Pd-NHC complexes.…”
Section: Carbopalladations Of Alkenes and The Heck-mizoroki Reactionmentioning
confidence: 60%
“…Durch 1 H-NMR-Spektroskopie und ESI-MS wies die Gruppe um Cavell die Produkte der reduktiven Eliminierung des NHCLiganden (1-substituierte Imidazoliumsalze) nach, ebenso wie alle postulierten Aryl-oder Alkylpalladium-Zwischenstufen im Heck-Mizoroki-Katalysezyklus. [145] Erwähnenswert ist, dass der Katalysator aus der ursprünglichen Arbeit von Herrmann et al [4,105] [169] und von Biffis et al [241] bestätigt. Lee und Mitarbeiter erforschten eine Reihe von zweifach ligierten NHC-Pd-Komplexen mit N-Benzyl-substituierten Chelatliganden.…”
Section: G Organ Et Alunclassified
“…[259] Ausgesprochen viele Arylbromide wurden in hohen Ausbeuten mit n-Butylacrylat gekuppelt (28, Schema 80), darunter aktivierte, nichtaktivierte und sogar desaktivierte (zweifach ortho-substituierte) Arylbromide. Umgekehrt reagierte para-Bromtoluol (27) [169] Andere NHC-Pd-Prä-katalysatoren brachten bei der Heck-Mizoroki-Arylierung von einfachen Chlorarenen niedrige Ausbeuten (3-35 %). [49,245,258,261,264] Die Gruppen um Andrus und Beller untersuchten auch weniger übliche Abgangsgruppen.…”
Section: G Organ Et Alunclassified
“…Ltd. (Mumbai, India) and were used without further purification. The 1-i-propylimidazole [16] and 1-benzylimidazole [17] were prepared according to the literature procedures.…”
Section: General Proceduresmentioning
confidence: 99%