Article
Chemistry, Inorganic & Nuclear
Shiori Sakamoto, Tsuyoshi Taniguchi, Yoko Sakata, Shigehisa Akine, Tatsuya Nishimura, Katsuhiro Maeda
Summary: A convenient method for synthesizing pentaarylcyclobutenylrhodium(I) complexes from [Rh(cod)OH](2), arylboronic acids, and diphenylacetylene derivatives is presented. These rhodium(I) complexes provide insights into the mechanism of forming highly reactive living polymerization catalysts from [Rh(nbd)Cl](2) using a similar method previously developed by the authors. In addition, the complex exhibits high reactivity as a catalyst for the polymerization of sodium propiolate.
Article
Chemistry, Multidisciplinary
Pavel G. Shangin, Irina V. Krylova, Andrey V. Lalov, Anna Y. Kozmenkova, Evgeniya A. Saverina, Petr A. Buikin, Alexander A. Korlyukov, Alyona A. Starikova, Elena N. Nikolaevskaya, Mikhail P. Egorov, Mikhail A. Syroeshkin
Summary: This paper presents the reverse side of the commonly used approach in organometallic chemistry, showing a significant change in the redox properties of ligands under the influence of a redox-inert metal. The germanium derivatives based on specific ligands exhibit unique HOMO and LUMO distributions, impacting the overall redox behavior of the complexes. Additionally, the high thermal stability of these derivatives and the potential for forming supramolecular structures suggest promising prospects for new functional materials.
Article
Biochemistry & Molecular Biology
Azza A. Hassoon, Attila Szorcsik, Ferenc Bogar, Ibolya Zita Papp, Livia Fulop, Zoltan Kele, Tamas Gajda
Summary: The study revealed that the (η5-Cp*)Rh(III) cation can induce deprotonation of amide nitrogen at physiological pH, leading to tridentate coordination with histidine-containing peptides. At pH 7.4, the binding strength of peptides with (η5-Cp*)Rh(III) depends on the presence and position of histidine in the sequence.
JOURNAL OF INORGANIC BIOCHEMISTRY
(2021)
Article
Chemistry, Organic
Jinlong Zhang, Zeng Gao, Jinlong Qian, Huameng Yang, Maosheng He, Gaoxi Jiang
Summary: A family of axially chiral azepine-containing seven-membered cyclic P,N-ligands, named Indole-azepinap, was prepared using L-alanine as an original chirality source. The direct chromatographic separation of two diastereomeric phosphine oxides on silica gel allowed easy accessibility of these ligands for further structural and electronic modifications. These Indole-azepinaps showed promising results in a Pd-catalyzed asymmetric allylic alkylation with high yields and moderate enantioselectivities.
Article
Chemistry, Organic
Na Lin, Lei Huang, Huan-huan Ding, Yue Zhang, Wen-jing Dong, Bin-yuan Xia, Wen-sheng Ren, Dong Zhao
Summary: Novel macrocycles with diverse heteroaromatics were synthesized using a fragment coupling strategy, showing strong host-guest interaction with uranyl ions to form 1:1 complexes with a high association constant. X-ray diffraction analysis revealed a unique boat-type conformation for one of the macrocycles.
ORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Multidisciplinary
Nikita M. Ankudinov, Denis A. Chusov, Yulia Nelyubina, Dmitry S. Perekalin
Summary: A new method for synthesizing chiral diene rhodium catalysts has been introduced, with one catalyst showing efficient asymmetric insertion of diazoesters into B-H and Si-H bonds with high yields and enantiomeric purity. The stereoselectivity of separation and catalytic reaction can be predicted by DFT calculations.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
J. L. S. Milani, A. F. P. Biajoli, F. I. Batista, R. S. Oliboni, O. L. Casagrande
Summary: A series of new Cr(III) complexes were successfully synthesized and showed moderate activity in ethylene oligomerization, with a uniform distribution of oligomers and polymer production ranging from 1.2% to 9.8%. The catalytic activity is mainly controlled by electronic effects at the thioether/imine groups.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Ahmed M. Mansour, Nourhan M. Ibrahim, Ahmad M. Farag, Mahmoud T. Abo-Elfadl
Summary: In this study, two Re(I) complexes were synthesized and their solvatochromic characteristics were examined. The study found that both complexes exhibited autofluorescence emission inside cells and showed increased apoptotic changes in specific cell lines.
Article
Chemistry, Inorganic & Nuclear
Angela Vivancos, Adrian Jimenez-Garcia, Delia Bautista, Pablo Gonzalez-Herrero
Summary: A series of bis-cyclometalated Pt(IV) complexes incorporating mesoionic aryl-NHC ligand trz with either 1-phenylpyrazole or 2-arylpyridine ligands are reported, showing phosphorescent emissions in the blue to yellow color range with high quantum yields. The addition of trz ligand leads to lower nonradiative decay rates and higher quantum efficiencies compared to homologous species with two equal 2-arylpyridine ligands. Computational calculations substantiate the effect of the carbene ligand on the energy levels and emissive properties of the complexes.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Catriona R. Vanston, Thomas P. Nicholls, Alex C. Bissember, Michael G. Gardiner, Curtis C. Ho
Summary: This study prepared palladium complexes with a new class of cationic aNHC ligands, but found that greater conformational restrictions are necessary to achieve significant electron transfer.
INORGANIC CHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Valentina Stoppa, Edoardo Battistel, Marco Baron, Paolo Sgarbossa, Andrea Biffis, Gregorio Bottaro, Lidia Armelao, Cristina Tubaro
Summary: This article reports the synthesis of three novel dinuclear gold(I) complexes with luminescent properties, which can be used in various research fields such as bioinorganic chemistry, catalysis, and material science. These complexes can be easily synthesized through mechanochemistry by reacting pristine dibromido complexes with phenylacetylene and KOH.
Article
Chemistry, Multidisciplinary
Guillaume Force, Robert J. J. Mayer, Marie Vayer, David Leboeuf
Summary: Chiral naphthalene diimide ligands (NDIPhos) were utilized in rhodium-catalyzed enantioselective hydrogenation, where these ligands' key feature is their self-assembly ability through pi-pi interactions to mimic bidentate ligands, offering an alternative to traditional supramolecular strategies. This concept was further supported by calculations using the composite electronic structure method r(2)SCAN-3c.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Rajarshi Mondal, Jason D. Braun, Issiah B. Lozada, Rachel Nickel, Johan van Lierop, David E. Herbert
Summary: A series of Fe and Ru coordination complexes supported by bidentate ligands with pi-extended N-heterocycles were synthesized and characterized, showing high-spin paramagnetic properties for FeBr2 and low-spin diamagnetic properties for octahedral Fe and Ru complexes. The impact of pi-extension on the electronic properties and absorption spectra was analyzed through Mossbauer spectroscopy and UV-Vis spectroscopy, revealing unexpected results in comparison to conventional assumptions. Spectroelectrochemistry was used to further explore the impact of electron transfer on the electronic absorption properties of the pi-extended Fe complexes.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Aaron J. Mallek, Bradley L. Pentelute, Stephen L. Buchwald
Summary: This study discusses the selective N-arylation of p-aminophenylalanine in polypeptides using pre-formed palladium oxidative addition complexes, enabling chemoselective C-N bond formation on peptides containing multiple other amino groups. By utilizing palladium complexes derived from electron-poor aryl halides, p-aminophenylalanine can be fully arylated at micromolar concentrations in aqueous buffer in a short amount of time. A complementary protocol using the non-nucleophilic, organic base 1,5-diazabicyclo(4.3.0)non-5-ene (DBN) expands the substrate scope and provides high conversion rates of up to 97%.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Energy & Fuels
Weili Jiang, Jicong Li, Mengying Wu, Limei He, Guanglin Zhou, Zhongrong Wang
Summary: Three kinds of porous organic polymers (POPs) containing N or P atoms were prepared and used as supports for Rh catalysts. The structures and compositions of these polymers were fully characterized. The Rh-N-POP showed a larger BET surface area and pore volume due to the bulk extrusion of triphenylphosphine (TPP) unit. The hydroformylation activity was promoted by the presence of free ligands in Rh-N-POP, but isomerization was greatly promoted by the TPP structure.
Article
Chemistry, Inorganic & Nuclear
T. Vanbesien, T. Delaunay, V. Wiatz, S. Bigot, H. Bricout, S. Tilloy, E. Monflier
Summary: The study presents an efficient process for obtaining isoidide by catalytic epimerization of isosorbide using HRu(CO)Cl(PPh3)(3)/Xantphos (1/1) as the organometallic catalyst without hydrogen. The reaction can be carried out in tert-amyl alcohol, without solvent, or in a biphasic system with toluene, showing potential for industrial application. The process demonstrates good activity and stability under different solvent conditions.
INORGANICA CHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Dennis Larsen, Michel Ferreira, Sebastien Tilloy, Eric Monflier, Sophie R. Beeren
Summary: This study utilizes a native cyclodextrin glucanotransferase (CGTase) to drive the dynamic system of cyclodextrins (CDs), incorporating unnatural glucopyranose-derived building blocks. By controlling the relative concentrations of modified glucopyranoses, modified CDs can be accessed.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Guillaume Hoyez, Cyril Rousseau, Jolanta Rousseau, Sebastien Saitzek, Anne Ponchel, Eric Monflier
Summary: A series of isoreticular zirconium-organic frameworks based on UiO-66 family were synthesized through a co-modulated hydrothermal method, with alpha-cyclodextrin being used to modulate the textural properties of the analogues. The systematic study showed that the addition of alpha-CD to the reaction mixture can significantly impact the properties of UiO-66 Zr-MOFs.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Mona Alleshagh, Samahe Sadjadi, Hassan Arabi, Naeimeh Bahri-Laleh, Eric Monflier
Summary: In this study, a novel chitosan-based catalyst was designed for the hydrofinishing of polyalphaolefins. The optimized reaction conditions resulted in a high yield of hydrogenated oil. The catalyst demonstrated heterogeneous nature and could be recovered and reused.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Review
Energy & Fuels
Claudia Prestigiacomo, Martina Biondo, Alessandro Galia, Eric Monflier, Anne Ponchel, Dominique Prevost, Onofrio Scialdone, Sebastien Tilloy, Rudina Bleta
Summary: This study successfully fabricates SnO@gamma-Al2O3 composites with tuneable pore size and well-defined octahedral-shape crystal structure using a molecular-colloidal coassembly approach combined with an ultrasonic-assisted precipitation method. The cooperative action of the supramolecular template and gamma-Al2O3 nanoparticles plays a critical role in the growth and orientation of SnO microcrystals and ultimately determines their catalytic performance in ester exchange reactions.
Article
Chemistry, Multidisciplinary
Abdelghani El Mouat, Chryslain Becquet, Jeremy Ternel, Michel Ferreira, Herve Bricout, Eric Monflier, Mohammed Lahcini, Sebastien Tilloy
Summary: This study reports the reductive hydroformylation of methyl 10-undecenoate in a biphasic liquid/liquid system. Under optimized conditions, the use of a specific ionic liquid immobilized rhodium/amine catalytic system allows for high yield of primary alcohols, which can be recycled.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
D. N. Gorbunov, M. V. Nenasheva, M. V. Terenina, Yu. S. Kardasheva, E. R. Naranov, A. L. Bugaev, A. V. Soldatov, A. L. Maximov, S. Tilloy, E. Monflier, E. A. Karakhanov
Summary: This review focuses on the progress made in the design of N-ligands for homogeneous and biphasic hydroformylation, as well as the data on important tandem reactions in hydroformylation.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Chemistry, Multidisciplinary
Antonio Madureira, Sebastien Noel, Bastien Leger, Anne Ponchel, Eric Monflier
Summary: The hydrogenation of vegetable oil-derived compounds using ion-exchange resin-supported ruthenium nanoparticles has been achieved for the first time. These catalysts show high efficiency, low metal loading, and excellent recyclability, and exhibit remarkable catalytic activity.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Walid Hamza Saadaoui, Cecile Machut, Sebastien Rio, Sandra Bigot, Vincent Wiatz, Eric Monflier, Anne Ponchel
Summary: The direct conversion of glucose to 5-hydroxymethylfurfural was investigated using phosphated niobium oxide-carbon catalysts in a biphasic system. A facile approach for generating Nb-based composites with high metal loadings (around 20%) was developed through hydrothermal carbonization, calcination, and H3PO4 adsorption. Catalysts were characterized through various techniques, and NbP@C-RB30 and NbP@C-RB15 prepared using oligosaccharides and low water volumes exhibited higher efficiency for HMF production.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Applied
Abdelghani El Mouat, Taha El Assimi, Mustapha Raihane, Jeremy Ternel, Herve Beicout, Eric Monflier, Sebastien Tilloy, Mohammed Lahcini
Summary: In this study, hyperbranched poly(epsilon-caprolactones) were synthesized and used as coating materials for slow-release DAP fertilizer. The prepared polymers (SFO-O-g-PCL) were confirmed by NMR and FTIR analysis. The coated DAP fertilizer granules showed a significant decrease in the release of P2O5 compared to the uncoated DAP fertilizer. This research opens up possibilities for the production of biodegradable coating agents using hydrophobic polyesters and bio-based oils.
PROGRESS IN ORGANIC COATINGS
(2023)
Editorial Material
Multidisciplinary Sciences
Anne Ponchel, Eric Monflier
Summary: This article comments on a recent study on the selective recovery of gold through a hierarchical host-guest assembly specifically built from beta-CD.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Dario Lacalamita, Guillaume Hoyez, Chiara Mongiovi, Anne Ponchel, Nadia Morin-Crini, Cyril Rousseau, Christophe Loup, Jolanta Rousseau, Marina Raschetti, Eric Monflier, Vincent Placet, Gregorio Crini
Summary: In recent years, there have been numerous studies on the use of metal organic frameworks (MOFs) to remove contaminants from aqueous solutions. However, little is known about using MOFs as adsorbents for the removal of fluoride ions from real effluents. In this study, a highly porous MOF, UiO-66-NH2, was used for the final treatment of complex discharge waters containing fluoride ions. The batch experiments showed that the MOF exhibited high adsorption capacities for fluoride ions, effectively reducing their concentrations in the effluent.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Thomas Roth, Rebecca Evertz, Niklas Kopplin, Sebastien Tilloy, Eric Monflier, Dieter Vogt, Thomas Seidensticker
Summary: Aqueous hydroaminomethylation (HAM) is a Green process for the efficient production of amines from basic chemicals. In this study, a continuous process for HAM in an aqueous multiphase system was successfully established. By adding randomly methylated-beta-cyclodextrin as a mass transfer agent, high yields and selectivities were achieved in several continuous experiments. The addition of cyclodextrin made it unnecessary to use solvents.
Article
Chemistry, Multidisciplinary
Chryslain Becquet, Michel Ferreira, Herve Bricout, Baptiste Quienne, Sylvain Caillol, Eric Monflier, Sebastien Tilloy
Summary: Jojoba oil ester was functionalized with alcohol groups via hydrohydroxymethylation catalyzed by a Rh/amine system. Under optimized conditions, a full conversion and a 99% yield of alcohol products were achieved. The catalytic system could be recycled at least 10 times without significant loss of activity. The hydrohydroxymethylated products were successfully used as monomers for the synthesis of a new biobased polyurethane with good thermal and mechanical properties.
Article
Polymer Science
Cedric Decarpigny, Anne Ponchel, Eric Monflier, Rudina Bleta
Summary: Surface modification is crucial for the production of highly efficient and stable enzymatic nanoreactors. This study investigates the impact of various functional groups on the catalytic performance of lipase B from Candida antarctica (CALB) in a supramolecular hydrogel. Results show that different functional groups have different effects on the catalytic activity and stability of CALB. Additionally, the use of cationic cross-linked beta-CD as an enzyme-stabilizing agent enhances the operational stability of the biocatalyst. These findings suggest that the supramolecular silicified hydrogel monoliths with hierarchical porosity have potential applications in biocatalytic continuous flow processes.