32555-96-7Relevant articles and documents
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.
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.
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
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
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.]
A Bis (BICAAC) Palladium(II) Complex: Synthesis and Implementation as Catalyst in Heck-Mizoroki and Suzuki-Miyaura Cross Coupling Reactions
Chakrabortty, Soumyadeep,Kaur, Mandeep,Adhikari, Manu,Manar, Krishna K.,Singh, Sanjay
supporting information, p. 6209 - 6217 (2021/05/06)
Carbenes are one of the most appealing, well-explored, and exciting ligands in modern chemistry due to their tunable stereoelectronic properties and a wide area of applications. A palladium complex (BICAAC)2PdCl2 with a recently discovered cyclic (alkyl)(amino)carbene having bicyclo[2.2.2] octane skeleton (BICAAC) was synthesized and characterized. The enhanced σ-donating and π-accepting ability of this carbene lend a hand to form a robust Pd-carbene bond, which allowed us to probe its reactivity as a precatalyst in Heck-Mizoroki and Suzuki-Miyaura cross-coupling reactions with low catalyst loading in open-air conditions. The diverse range of substrates was explored for both the cross-coupling reactions. To get a better understanding of the catalytic reactions, several analytical techniques such as field-emission scanning electron microscopy, high-resolution transmission electron microscopy, and powder X-ray diffraction were employed in a conclusive manner.
