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Seçki̇n, Turgay; Köytepe, Süleyman; Demır, Serpıl; Özdemır, İsmaıl; Çetınkaya, Bekır

doi:10.1023/a:1026144010812

Cited by 26 publications

(14 citation statements)

References 18 publications

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“…A number of palladium-mediated Suzuki reactions using water as a solvent have also been reported [57][58][59]. In addition, the novel ligands 1,3-bis(dialkyl)imidazolium salts, 1-alkylimidazoline, and a-bis(imine) for the Heck and Suzuki reactions of aryl chlorides have developed in improved procedures [60][61][62][63] [64].…”

Section: Catalysis Studiesmentioning

confidence: 99%

Complexes Containing N-(2-hydroxyethyl)-ethylenediamine with Tetracyanometallate (II): Synthesis, IR Spectra, Thermal Behavior, Crystal Structure, Magnetic Properties and Catalysis

Karadağ

Şenocak

Yerli

et al. 2012

J Inorg Organomet Polym

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Two novel cyano-bridged Ni 2? and Cu 2? compounds, {[M 2? (hydeten) 2 (l-CN) 2 Ni(CN) 2 ] n , M 2? = Ni 2? (c1) and Cu 2? (c2), N-(2-hydroxyethyl)-ethylenediamine (hydeten), were prepared and characterized by elemental analysis, IR spectroscopy and thermoanalytical measurements. The one-dimensional polymeric structure of c2, which was determined by X-ray diffraction techniques, was formed with a 2,2-TT-type chain, -Cu(hydeten) 2 -NC-Ni(CN) 2 -CNCu(hydeten) 2 -, linkages. Also, while the EPR spectra and magnetic properties of complexes c1 and c2 with [Ni(hydeten) 2 Pd(CN) 4 ] (c3) and [Cu(hydeten) 2 Pd(CN) 4 ] (c4) [Karadag, Z Kristallogr 222:39, 2007] were investigated, the catalytic activity of c3 and c4 was studied. The EPR spectra of c2 and c4 showed that Cu 2? was located in tetragonal distorted octahedral sites (D 4h ) and the ground state of the paramagnetic electron was d x 2 Ày 2 . The magnetic behavior exhibited weak antiferromagnetic interactions in all the complexes. Also, the catalytic properties of c3 and c4, which were assigned with Suzuki and Heck coupling reactions, showed that they did not have catalytic effects.

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Section: Catalysis Studiesmentioning

confidence: 99%

Complexes Containing N-(2-hydroxyethyl)-ethylenediamine with Tetracyanometallate (II): Synthesis, IR Spectra, Thermal Behavior, Crystal Structure, Magnetic Properties and Catalysis

Karadağ

Şenocak

Yerli

et al. 2012

J Inorg Organomet Polym

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“…We thought it should be interesting to determine the effect produced by NMe 2 substituents, which attached to p-position of N-benzyl group has shown a strong influence, despite the isolated methylene groups between Pd and phenyl ring [15]. In this study we sought to synthesize more r-donating NHC complexes of palladium(II) via direct interaction of imidazolinium salts (1) with N,C-type palladacyclic acetate (2) and discovered that hydrolysis of the ligand to afford N-formyl compounds is facile.…”

Section: Introductionmentioning

confidence: 99%

The influence of moisture on deprotonation mode of imidazolinium chlorides with palladacycle acetate dimer

Günay¹,

Özdemir²,

Ulusoy³

et al. 2009

Journal of Organometallic Chemistry

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“…All aryl iodides were converted completely after 2 hours with 1.5 mol% Pd. 4-bromoacetophenone requires a longer reaction time of 4 hours and the yield of Heck product is about 80 % [68]. Using Design of Experiments (DoE), McNamara et al improved the conversion from 34 % to 88 % in the coupling of 4-bromoacetophenone and styrene.…”

Section: Polymers and Dendrimersmentioning

confidence: 99%

“…Therefore, they propose a "quasi-homogeneous" mechanism of the reaction. Very recently, Seckin et al published an interesting route for the synthesis of Pd/polymer catalysts [68]. In a first step, bis(imine) Pd complexes were generated, which were subsequently copolymerized with different dianhydrides.…”

Section: Reactions Of Aryl Chlorides (Table 4)mentioning

confidence: 99%

Supported Palladium Catalysts in Heck Coupling Reactions - Problems,Potential and Recent Advances

Köhler

Pröckl

Kleist

2006

COC

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The review reports the general approach, problems, potential and recent advances in heterogeneously catalyzed Heck reactions. It demonstrates the advantages and limitations for practical applications at present. A literature overview is given separately for substrates that are easier to activate (aryl iodides, activated aryl bromides) and for non-/deactivated aryl bromides and aryl chlorides during the period between 2001 and 2005. New approaches and strategies for the activation of aryl bromides and especially chlorides by heterogeneous catalysts are discussed. The argumentations clearly exceed simple separation and reuse arguments. Particular attention is given to the relation between homogeneous and heterogeneous catalysis from the mechanistic point of view. Very recent reports show clear success in the understanding of corresponding reaction mechanisms. Palladium species dissolved from the support are proven to be responsible for high activity and selectivity in Heck reactions by supported catalysts (Pd on activated carbon, oxides, polymers and in zeolites). The careful choice of optimum catalyst and reaction conditions are crucial and allowed the development of simple heterogeneous catalysts that activate even deactivated aryl chlorides with high yields within few hours of reaction time.

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Cited by 26 publications

References 18 publications

Complexes Containing N-(2-hydroxyethyl)-ethylenediamine with Tetracyanometallate (II): Synthesis, IR Spectra, Thermal Behavior, Crystal Structure, Magnetic Properties and Catalysis

Complexes Containing N-(2-hydroxyethyl)-ethylenediamine with Tetracyanometallate (II): Synthesis, IR Spectra, Thermal Behavior, Crystal Structure, Magnetic Properties and Catalysis

The influence of moisture on deprotonation mode of imidazolinium chlorides with palladacycle acetate dimer

Supported Palladium Catalysts in Heck Coupling Reactions - Problems,Potential and Recent Advances

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