Ein hocheffizienter Katalysator für die Telomerisation von 1,3‐Dienen mit Alkoholen: die erste Synthese eines Monocarbenolefinpalladium(
            <scp>0</scp>
            )‐Komplexes

Jackstell, Ralf; Andreu, Mario Gómez; Frisch, Anja C.; Selvakumar, Kumaravel; Zapf, Alexander; Klein, Holger; Spannenberg, Anke; Röttger, Dirk; Briel, Oliver; Karch, Ralf; Beller, Matthias

doi:10.1002/1521-3757(20020315)114:6<1028::aid-ange1028>3.0.co;2-#

Cited by 65 publications

(9 citation statements)

References 51 publications

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“…b Pd(IMes)(dvds) = 1,3-dimesitylimidazole-2-ylidene-palladium(0)-g 2 ,g 2 -1,1,3,3-tetramethyl-1,3-divinyldisiloxane [67]. also a high yield of benzonitrile at relatively low catalyst concentration was obtained ( [7][8].…”

Section: Resultsmentioning

confidence: 99%

Improving palladium-catalyzed cyanation of aryl halides: development of a state-of-the-art methodology using potassium hexacyanoferrate(II) as cyanating agent

Schareina

Zapf

Beller

2004

Journal of Organometallic Chemistry

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178

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Section: Resultsmentioning

confidence: 99%

Improving palladium-catalyzed cyanation of aryl halides: development of a state-of-the-art methodology using potassium hexacyanoferrate(II) as cyanating agent

Schareina

Zapf

Beller

2004

Journal of Organometallic Chemistry

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178

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“…[8] So far only one phosphine-free monocarbenepalladium(0) complex, 1,3-dimesitylimidazol-2-ylidenepalladium(0)-h 2 ,h 2 -1,1,3,3-tetramethyl-1,3-divinyldisiloxane (1; [(IMes)Pd 0 (dvds)] has been synthesized and characterized by us. [9] Complex 1 was prepared by reacting the palladium(0) diallylether complex [(Pd 2 (dae) 3 ] [10] with 1,3-dimesitylimidazol-2-ylidene carbene (IMes) [11] in the presence of excess of 1,1,3,3tetramethyl-1,3-divinyldisiloxane (dvds) at À 30 8C. In this complex, the central palladium atom is coordinated by two olefin units from H 2 CCHSiMe 2 OSiMe 2 HCCH 2 and the carbene ligand in a trigonal-planar coordination.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Monocarbenepalladium(0) Complexes and Their Catalytic Behavior in Cross-Coupling Reactions of Aryldiazonium Salts

et al. 2002

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The first monocarbenepalladium(0) complexes with benzoquinone and naphthoquinone as additional ligands have been prepared. As demonstrated by NMR spectroscopy and X‐ray analysis, the complexes show a unique coordination mode giving quinone‐bridged dimers. The monocarbenepalladium(0) complexes allow efficient cross‐coupling reactions of aryldiazonium salts with olefins (Heck reaction) and arylboronic acids (Suzuki reaction).

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“…Interestingly, compound 14 has shown remarkable productivities and selectivities for the telomerization of 1,3‐dienes with alcohols 50. 51 The good catalytic properties of this complex were attributed to the presence of unsaturated [PdL] species.…”

Section: Palladium Catalysts Supported By Bulky and Electron‐rich mentioning

confidence: 99%

Monoligated Palladium Species as Catalysts in Cross‐Coupling Reactions

2004

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Palladium-mediated cross-coupling reactions are attractive organometallic transformations for the generation of C--C, C--N, C--O, and C--S bonds. Despite being widely employed in small-scale syntheses, cross-coupling reactions have not found important industrial applications because until recently, only reactive aryl bromides and iodides could be used as substrates. These substrates are generally more expensive and less widely available than their chloride counterparts. Over the past few years, new catalytic systems with the ability to activate unreactive and sterically hindered aryl chlorides have been developed. The new catalysts are based on palladium complexes that contain electron-rich and bulky phosphine or carbene ligands. The enhanced reactivity observed with these new systems has been attributed to the formation of unsaturated and reactive [PdL] species which can readily undergo oxidative addition reactions with ArX to yield [Pd(Ar)X(L)].

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Ein hocheffizienter Katalysator für die Telomerisation von 1,3‐Dienen mit Alkoholen: die erste Synthese eines Monocarbenolefinpalladium( 0 )‐Komplexes

Cited by 65 publications

References 51 publications

Improving palladium-catalyzed cyanation of aryl halides: development of a state-of-the-art methodology using potassium hexacyanoferrate(II) as cyanating agent

Improving palladium-catalyzed cyanation of aryl halides: development of a state-of-the-art methodology using potassium hexacyanoferrate(II) as cyanating agent

Synthesis of Monocarbenepalladium(0) Complexes and Their Catalytic Behavior in Cross-Coupling Reactions of Aryldiazonium Salts

Monoligated Palladium Species as Catalysts in Cross‐Coupling Reactions

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