13041-79-7Relevant academic research and scientific papers
A soluble fluorous palladium complex that promotes heck reactions and can be recovered and reused
Curran, Dennis P.,Fischer, Karin,Moura-Letts, Gustavo
, p. 1379 - 1382 (2004)
A new fluorous SCS pincer palladium complex is synthesized and shown to efficiently promote typical Heck reactions under microwave or thermal heating. The complex is air stable and can be recovered after reactions for reuse by fluorous solid phase extraction. By analogy to related complexes, it may function as a precursor of soluble ligandless palladium metal.
Saturated N-heterocyclic carbene oxime and amine palladacycle catalysis of the Mizoroki-Heck and the Suzuki reactions
Iyer, Suresh,Jayanthi
, p. 1125 - 1128 (2003)
ortho-Palladated aryl oxime and amines with a N-heterocyclic carbene ligand show increased thermal stability and catalyze the Mizoroki-Heck and Suzuki reaction with high yields, and moderate TON (2,000-92,000) and TOF (200-4,300 h-1). Homo coupling of the aryl halides gave low yields of the biaryls in the presence of these catalysts.
Combination of palladium and oleic acid coated-magnetite particles: Characterization and using in Heck coupling reaction with magnetic recyclability
Rafiee, Ezzat,Ataei, Ali,Nadri, Shirin,Joshaghani, Mohammad,Eavani, Sara
, p. 302 - 309 (2014)
The magnetic Fe3O4 nanoparticles were prepared by co-precipitation method and coated with oleic acid. The oleic acid coated Fe3O4 (Fe@OA) particles were used for the immobilization of palladium particles to prod
Palladium immobilized on Fe3O4/ZnO nanoparticles: A novel magnetically recyclable catalyst for Suzuki-Miyaura and heck reactions under ligand-free conditions
Hosseini-Sarvari, Mona,Khanivar, Ameneh,Moeini, Fatemeh
, p. 45 - 53 (2016)
Magnetically separable Pd(0)/Fe3O4/ZnO catalyst was easily synthesized by immobilizing Pd on the surface of magnetic Fe3O4-ZnO nanoparticles. The nano-Pd/Fe3O4/ZnO was found as a magnetically separable and highly active catalyst for Suzuki-Miyaura as well as Heck cross-coupling reactions under ligand-free conditions. Under appropriate conditions, all reactions afforded the desired products in moderate to excellent yields. Moreover, this catalyst can be easily recovered using simple magnet and directly reused without significant loss of its activity.
Acetylferrocenyloxime palladacycle-catalyzed Heck reactions
Iyer, Suresh,Jayanthi, A
, p. 7877 - 7878 (2001)
Acetylferrocenyloxime palladacycle catalyzed the Heck reaction of aryl bromides and activated aryl chlorides.
Reductive PET Cycloreversion of Oxetanes: Singlet Multiplicity, Regioselectivity, and Detection of Olefin Radical Anion
Perez-Ruiz, Raul,Izquierdo, M. Angeles,Miranda, Miguel A.
, p. 10103 - 10108 (2003)
Cycloreversion of 2-(p-cyanophenyl)-4-methyl-3-phenyloxetane (1) is achieved using 1-methoxynaphthalene (2) as electron-transfer photosensitizer. The experimental results are consistent with the reaction taking place from the singlet excited state of the
Synthesis and characterization of Pd(II) complexes bearing NS, CS, SNS and SCS ligands. Evaluation of their microwave assisted catalytic activity in C–C coupling reactions
Aguilar-Castillo, Bethsy A.,Gabriel Flores-Rojas, G.,González-Sebastián, Lucero,Hernández-Ortega, Simón,Morales-Morales, David,Reyes-Martínez, Reyna
, (2020)
A series of coordination (Pd-NS, Pd-SNS, Pd-SNS-O) and organometallic (Pd-C and Pd-SCS) Pd(II) complexes supported by bidentate and tridentate ligands featuring sulphur moieties have been prepared. All ligands and their palladium complexes were fully char
Efficient deep blue emission by 4-styrylbenzonitrile derivatives in solid state: Synthesis, aggregation induced emission characteristics and crystal structures
Fang, Ying,Meng, Yuanyuan,Yuan, Chunming,Du, Chunhui,Wang, Kun-Peng,Chen, Shaojin,Hu, Zhi-Qiang
, (2021/11/16)
Organic fluorescent molecules with π-conjugated system have shown great importance in numerous applications including bioimaging and optoelectronics. Planar aggregation-induced emissive (AIE) organic compounds with efficient solid-state luminescence are rarely developed and urgently needed in various applications. In this work, highly planar 4-styrylbenzonitrile derivatives have been synthesized. Most of these compounds show strong AIE properties with hundred-fold fluorescent enhancement. Moreover, these molecules are deep blue emissive in solid state, exhibiting good to excellent fluorescence quantum efficiency. The single crystal analysis shows that adjacent molecules could form special J-type aggregation. The intramolecular rotations are efficiently restricted by various noncovalent interactions. These molecular arrangements could be essential for the observed strong emission in aggregated and solid state. This work has paved a new path to efficient AIE-active organic emitters with highly planar conformations from 4-styrylbenzonitrile structure.
Introduction of a Recyclable Basic Ionic Solvent with Bis-(NHC) Ligand Property and The Possibility of Immobilization on Magnetite for Ligand- and Base-Free Pd-Catalyzed Heck, Suzuki and Sonogashira Cross-Coupling Reactions in Water
Min, Qingwang,Miao, Penghua,Chu, Deyu,Liu, Jinghan,Qi, Meijuan,Kazemnejadi, Milad
, p. 3030 - 3047 (2021/02/16)
A new versatile and recyclable NHC ligand precursor has been developed with ligand, base, and solvent functionalities for the efficient Pd-catalyzed Heck, Suzuki and Sonogashira cross-coupling reactions under mild conditions. Furthermore, NHC ligand precursor was immobilized on magnetite and its catalytic activity was also evaluated towards the coupling reactions as a heterogeneous catalyst. The NHC ligand precursor was prepared with imidazolium functionalization of TCT followed by a simple ion exchange by hydroxide ions. However, the results revealed an excellent catalytic activity for the both homogeneous and heterogeneous catalytic systems. 1.52?g.cm?3 and 1194 cP was obtained for the density and viscosity of the NHC ligand precursor respectively. On the other hand, the heterogeneous type could be readily recovered from the reaction mixture and reused for several times while preserving its properties. Heterogeneous nature of the magnetic catalyst was studied by hot filtration, mercury poisoning, and three-phase tests. High to excellent yields were obtained for all entries for the both homogeneous and heterogeneous catalysts, which reflects the high consistency of the catalyst. Graphic Abstract: [Figure not available: see fulltext.]
Green and sustainable palladium nanomagnetic catalyst stabilized by glucosamine-functionalized Fe3O4@SiO2 nanoparticles for Suzuki and Heck reactions
Eslahi, Hassan,Sardarian, Ali Reza,Esmaeilpour, Mohsen
, (2021/04/26)
A novel magnetic and heterogeneous palladium-based catalyst stabilized by glucosamine-functionalized magnetic Fe3O4@SiO2 nanoparticle was synthesized. The strategy relies on the covalently bonding of glucosamine to cyanuric chloride-functionalized magnetic nanoparticles followed by complexation with palladium. The structure of magnetic nanocatalyst was fully determined by FT-IR, XRD, DLS, FE-SEM, TEM, ICP, UV-Vis, TGA, VSM, and EDX. The obtained results confirmed that the palladium nanoparticles stabilized by glucosamine immobilized onto the magnetic support exhibited high activity in cross-coupling reactions of Suzuki-Miyaura and Mizoroki-Heck. Various aryl halides were coupled with arylboronic acid (Suzuki cross-coupling reaction) and olefins (Heck reactions) under the green conditions to provide corresponding products in high to excellent yields. Interestingly, the catalyst can be easily isolated from the reaction media by magnetic decantation and can subsequently be applied for consecutive reaction cycles (at least seven times) with no notable reduction in the catalytic activity.
