32555-96-7Relevant academic research and scientific papers
Synthesis and catalytic activities of 1-alkoxycarbonyl- and 1-carbamoylmethyl-5-phenyl-3-aryl-3H-imidazol-1-yliden-Pd(II) complexes
Koruk?u, Meliha ?etin,Co?kun, Necdet
, p. 47 - 56 (2017)
4-Phenyl-1-aryl-1H-imidazoles were reacted with α-haloesters and amides to give the corresponding imidazolium salts. The latter were used as starting materials for the synthesis of Pd(NHC) complexes. The catalytic activities of the newly prepared compounds were screened in a model coupling reaction. 1-Alkoxycarbonyl-5-phenyl-3-aryl-3H-imidazol-1-yliden-Pd(II) were shown to be better catalyst than the 1-carbamoylmethyl-5-phenyl-3-aryl-3H-imidazol-1-yliden-Pd(II) complexes. The catalysts were shown to be insensitive to the air oxygen and water.
New Pd(II) and Pt(II)-diaminophosphine complexes bearing cyclohexyl or isopropyl moiety: Use of Pd(II) complexes as precatalyst in Mizoroki-Heck and Suzuki-Miyaura cross-coupling reactions
Aydemir, Murat,Durap, Feyyaz,Baysal, Akin
, p. 1279 - 1288 (2015)
Two new diaminophosphine ligands, N, N′-bis(dicyclohexylphosphino)-2-(aminomethyl)aniline (1) and N, N′-bis(diisopropylphosphino)-2-(aminomethyl)aniline (2) were synthesized by the reaction of 2-(aminomethyl)aniline with two equivalents of Cy2P
Efficient and ligand free palladium catalyst for Suzuki and Heck cross-coupling reactions
Luo, Bin,Wang, Jiaqing,Ge, Danhua,Li, Xinming,Cao, Xueqin,Pan, Yue,Gu, Hongwei
, p. 1310 - 1314,5 (2014)
A simple and efficient system for Suzuki cross-coupling reactions was developed using a ligandless catalyst of Pd nanoclusters generated in situ from Pd(acac)2. The cross-coupling reactions proceeded under mild reaction conditions with a high reaction rate (5 min) to give various biaryls in high yields. The system also exhibited catalytic potential for Heck reaction between aryl bromides and styrene.
N-heterocyclic carbene palladium complexes with different N-coordinated ligands: Comparison of their catalytic activities in Suzuki-Miyaura and Mizoroki-Heck reactions
Karata?, Mert Olgun,?zdemir, Nam?k,Al?c?, Bülent,?zdemir, ?smail
, (2020)
In this paper, we have reported the synthesis and catalytic activities of four new anthracene substituted imidazole-based palladium N-heterocyclic carbene complexes. The synthesized complexes, 2a–d, were stabilized with different N-heterocycles, namely py
5-Nitrobenzimidazole containing Pd(II)catalyzed C[sbnd]C cross-coupling reactions: The effect of the N-substituent of the benzimidazole structure on catalyst activity
Buldurun, Kenan,?zdemir, ?smail
, p. 172 - 177 (2019)
A series of Pd(II)complexes (1a-e)were successfully synthesized by reaction of N-substituted 5-nitrobenzimidazole with [PdCl2(CNCH3)2]in toluene under argon reflux condition. Their catalytic activity in the Suzuki-Miyaura
Five complexes containing N, N -bis(2-hydroxyethyl)-ethylenediamine with tetracyanidopalladate(II): Synthesis, crystal structures, thermal, magnetic, and catalytic properties
Korkmaz, S. Aslan,Karadag,Korkmaz,Andac,Guerbuez,Oezdemir,Topkaya
, p. 3072 - 3091 (2013)
Five cyanide complexes, [Ni(N-bishydeten)Pd(CN)4] (1), [Cu(N-bishydeten)Pd(-CN)2(CN)2]n (2), [Cu(N-bishydeten)2][Pd(CN)4] (3), [Zn(N-bishydeten)Pd(CN) 4] (4), and [Cd(N-bishydeten)2][Pd(CN)4] (5) (N-bishydeten = N,N-bis(2-hydroxyethyl)-ethylenediamine), have been synthesized and characterized using various techniques. Different structures were formed when the M: L ratio was varied in copper complexes. The single-crystal X-ray diffraction analysis reveals that 2, a 1-D cyanide-bridged complex with 2,2-CT-type zigzag chain, was obtained by using 1: 1 M: L ratio whereas 3 was formed as a complex salt in a molar ratio of 1: 2. The thermal stabilities determined from DTGmax values of the first decomposition stages change in the order 1 > 5 > 4 > 3 > 2. Although an EPR signal was not observed for 1, the g parameters obtained from the EPR spectra of 2 and 3 indicate that CuII ions are located in tetragonally distorted octahedral sites (D4h), and the ground state of the unpaired electron is ( 2B1g). The magnetic behavior indicates a very small antiferromagnetic interaction below 10 K for 1-3. In 3, there is a temperature-independent paramagnetism (α) due to the orbital moments of the d electrons. 1-3 were tested as catalysts in Suzuki and Heck coupling reactions. 102013
Microwave-assisted synthesis of novel perimidinium salts as N-heterocyclic carbene precursors: Involvement in palladium-catalyzed cross-coupling reactions
Onar, Gulnihan,Karatas, Mert Olgun,Alici, Bülent,Cetinkaya, Engin
, p. 563 - 567 (2015)
[Figure not available: see fulltext.] In the current study, five novel perimidinium chlorides were synthesized in good yields by reaction of 1-(3-methylbenzyl)perimidine with five different alkyl chlorides under microwave irradiation in 30 minutes. Synthe
Preparation of a new clay-immobilized highly stable palladium catalyst and its efficient recyclability in the Heck reaction
Poyatos, Macarena,Marquez, Francisco,Peris, Eduardo,Claver, Carmen,Fernandez, Elena
, p. 425 - 431 (2003)
The immobilization of a series of bis-carbene-pincer complexes of palladium(II) on montmorillonite K-10 affords the preparation of effective catalysts for the C-C coupling in a standard Heck reaction. The supported catalysts so obtained, show catalytic activity similar to their homogeneous counterparts. The determination of Pd content on the supported catalysts by XPS and elemental analysis, before and after each catalytic reaction, shows that leaching is negligible. Once the reaction conditions were optimized, we were able to recycle the catalyst at least ten times, without significant loss of activity.
Synthesis and catalytic application of palladium complexes with picoline-functionalized benzimidazolin-2-ylidene ligands
Jahnke, Mareike C.,Pape, Tania,Hahn, F. Ekkehardt
, p. 1960 - 1969 (2009)
The picoline-functionalized benzimidazolium salts N-alkyl- N'-picolylbenzimidazolium bromide [alkyl = methyl (1), ethyl (2), n-propyl (3), n-butyl (4)] and the dipicoline-function-alized benzimidazolium bromide 5 have been synthesized. Reaction of the sal
Palladium Loaded Dendronized Polymer as Efficient Polymeric Sustainable Catalyst for Heck Coupling Reaction
Hiba, K.,Krishna, G. Anjali,Prathapan, S.,Sreekumar, K.
, (2021/08/18)
The palladium incorporated amine-functionalized dendronized polymer was synthesized by the addition of palladium acetate to dendronized polymer in methanol at room temperature. Palladium species are immobilized onto the dendritic structure by their coordination with amino functional groups. The newly developed dendritic system showed high palladium content in the low generation level itself, which was found to be 4.19?mmol/g. This was fairly higher than, the other palladium-based catalysts. Energy dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, UV–Visible spectroscopy, and X-ray photoelectron spectroscopy were used to confirm the successful synthesis of the new catalyst. It was used as a homogeneous palladium catalyst for Heck coupling reaction between olefins and differently substituted aryl halides and the products were isolated in high yield. The products isolated were in trans configuration, which indicated the selectivity of the newly developed catalytic system. Also, this catalyst system was reused up to nine times without a significant decrease in its catalytic activity. The easy accessibility of catalytic sites, stability, resistance to metal leaching, high catalytic activity and remarkable stereoselectivity with a low amount of catalyst are all due to the dendritic support. The docking study was carried out for all the stilbene derivatives obtained by the Heck coupling reaction against DprE1 protein to study its potential antitubercular activity. All the compounds displayed superior docking score values over the range ??6.5 to ??8.2?kcal/mol, compared to the standard drug isoniazid with docking score of ??6.1?kcal/mol against DprE1. Graphic Abstract: [Figure not available: see fulltext.]
