Article
Chemistry, Physical
Shiyi Yang, Tongliang Zhou, Albert Poater, Luigi Cavallo, Steven P. Nolan, Michal Szostak
Summary: The study presents a new Pd(ii)-NHC precatalyst for the Suzuki-Miyaura cross-coupling of aryl esters, demonstrating it to be the most reactive precatalyst discovered so far in this reactivity manifold. The unconventional O-C(O) cross-coupling reaction is highlighted for its unique synthetic utility in late-stage functionalization of pharmaceuticals and sequential chemoselective coupling.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Zahid Nawaz, Nevin Gurbuz, Muhammad Naveed Zafar, Namik Ozdemir, Uzma Habib, Kalsoom Jan, Ismail Ozdemir
Summary: The research aims to synthesize homogeneous catalysts by starting from novel precursors to form N-heterocyclic carbene (NHC) ligands, and subsequently synthesizing Pd(NHC)-PEPPSI type complexes. The structure of all synthesized ligands and complexes was confirmed using various spectroscopic techniques, with some compounds confirmed by X-ray. These complexes were found to be significantly active as catalysts in the C-C cross-coupling reaction.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Physical
Jonathan De Tovar, Franck Rataboul, Laurent Djakovitch
Summary: This review discusses the potential application and understanding of Pd(II) complexes anchored on different supports as catalytic systems for the Suzuki-Miyaura reaction, highlighting their high reactivity, easy separation, purification, and recyclability. It focuses on the general developments in this research area over the last three decades, including the most recent achievements and understanding of these heterogenized systems.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Chemistry, Organic
Peng Lei, Yibo Wang, Caixia Zhang, Yuge Hu, Juntao Feng, Zhiqing Ma, Xili Liu, Roman Szostak, Michal Szostak
Summary: In this study, the Sonogashira cross-coupling of aryl ammonium salts was successfully catalyzed by [Pd(NHC)(3-CF3-An)Cl2]. The catalyst exhibited broad scope and excellent C-N activation selectivity. The replacement of pyridine with aniline as an ancillary ligand in the Pd(II)-NHC complex was proven to be highly effective in stabilizing the catalyst.
Article
Chemistry, Physical
Jonathan De Tovar, Franck Rataboul, Laurent Djakovitch
Summary: The study on a series of palladium(II) complexes with bis(NHC) ligands immobilized on TiO2 surface reveals that these complexes evolve to Pd NPs at the TiO2 surface under reaction conditions, releasing Pd species in the liquid phase. The reactivity is enhanced by the in situ generation of Mott-Schottky heterojunctions, leading to new pathways for the design of heterogenized catalysts in reverse-flow reactors.
JOURNAL OF CATALYSIS
(2021)
Article
Crystallography
Lixin You, Rui Tan, Xiaojuan Wang, Jianhong Hao, Shiyu Xie, Gang Xiong, Fu Ding, Andrei S. Potapov, Yaguang Sun
Summary: In this study, a new heterogeneous catalyst Pd-NHC@Eu-BCI was synthesized by incorporating N-heterocyclic carbene-palladium active sites into a 2D coordination polymer based on a 1,3-bis(carboxymethyl)imidazolium ligand. The catalyst was thoroughly characterized using various analytical techniques. The Pd-NHC@Eu-BCI catalyst exhibited excellent catalytic activity in the Suzuki-Miyaura cross-coupling reaction. It could be easily recovered from the reaction mixture and maintained its catalytic activity and structure even after five cycles.
Article
Multidisciplinary Sciences
Lara E. Zetzsche, Jessica A. Yazarians, Suman Chakrabarty, Meagan E. Hinze, Lauren A. M. Murray, April L. Lukowski, Leo A. Joyce, Alison R. H. Narayan
Summary: This study demonstrates the use of cytochrome P450 enzymes for biocatalytic cross-coupling reactions, enabling the formation of sterically hindered biaryl bonds through oxidative C-C bond formation. By engineering the substrate and atroposelectivity of the P450 enzyme, a highly efficient and selective process has been developed.
Article
Chemistry, Physical
Mitat Akkoc, Nesrin Bugday, Serdar Altin, Ismail ozdemir, Sedat Yasar
Summary: A novel Pd-NHC functionalized magnetic Fe3O4@SBA-15@NHC-Pd catalyst was synthesized and demonstrated high efficiency in Suzuki-Miyaura C-C bond formation reactions. The catalyst was characterized using various techniques to determine its structure and content, and was found to be effective in facilitating chemical reactions in aqueous media at room temperature.
Article
Chemistry, Physical
Longjiang Sun, Qi Li, Mang Zheng, Siying Lin, Changliang Guo, Laiyu Luo, Shien Guo, Yuxin Li, Cheng Wang, Baojiang Jiang
Summary: The development of efficient carbon-carbon cross-coupling catalysts with low noble metal amounts has gained significant attention. In this study, a Cu/C-700/Pd nanocomposite was synthesized by loading trace Pd2+ onto a carbon support derived from a novel mononuclear copper complex. The as-prepared nanomaterial exhibited highly dispersed copper phosphide nanoparticles and Pd nanoparticles via neighboring Cu-Pd sites, showing excellent catalytic activity and selectivity in Suzuki-Miyaura cross-coupling reaction.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Chuntao Zhong, Huiling Tang, Benqiang Cui, Yanhui Shi, Changsheng Cao
Summary: This article describes a palladium-catalyzed Suzuki cross-coupling reaction of benzyl ammonium triflates via activation of a Csp(3)-N bond to construct a Csp(3)-Csp(2) bond. The reaction exhibits a wide substrate scope and functional group tolerance, and can be successfully performed in a one-pot process.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Article
Chemistry, Multidisciplinary
Vladimir Burilov, Dmitriy Radaev, Elza Sultanova, Diana Mironova, Daria Duglav, Vladimir Evtugyn, Svetlana Solovieva, Igor Antipin
Summary: Carrying out organic reactions in water has attracted much attention. Catalytic reactions in water with metallosurfactants, which have both a metallocenter and the surface activity necessary for solubilizing hydrophobic reagents, are of great demand. In this study, a new approach was proposed to synthesize NHC PEPPSI metallosurfactants by sequentially functionalizing imidazole 4,5-dicarboxylic acid with hydrophilic oligoethylene glycol and lipophilic alkyl fragments. Complexes with different lipophilicity were obtained and their catalytic activity was studied in reduction and Suzuki-Miyaura reactions. A comparison with commercially available PEPPSI-type catalysts designed by Organ was made. It was found that the reduction reaction in an aqueous solution of the metallosurfactant with the tetradecyl lipophilic fragment was three times more active than the commercial PEPPSI complexes, which was attributed to the formation of stable monodisperse aggregates detected by DLS and TEM.
Article
Chemistry, Physical
Fatemeh Rajabi, Anand S. Burange, Leonid G. Voskressensky, Rafael Luque
Summary: A periodic mesoporous organosilica material functionalized with a bis-NHC palladium pincer complex was synthesized by sol-gel process. The resulting hybrid nanomaterial exhibited excellent activity and stability as a catalyst for Suzuki-Miyaura cross-coupling, showing no Pd contamination in the products and verifying the reaction to be truly heterogeneous.
MOLECULAR CATALYSIS
(2021)
Article
Chemistry, Inorganic & Nuclear
Yaxu Liu, Thomas Scattolin, Alberto Gobbo, Marek Belis, Kristof Van Hecke, Steven P. Nolan, Catherine S. J. Cazin
Summary: The synthesis of a series of stable Pd(II)-NHC pre-catalysts with excellent catalytic activity in Suzuki-Miyaura and Buchwald-Hartwig reactions has been successfully achieved in this study, especially when IPrCl is employed as an ancillary ligand. The [Pd(IPr*)Cl(1-Bu-t-indenyl)] complex also exhibited optimal catalytic activity in the challenging Suzuki-Miyaura reaction between esters and arylboronic acids under very mild reaction conditions.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Applied
Maryam Mohammadikish, Nazanin Mosleh
Summary: Utilizing sunlight as a driving force in chemical reactions is beneficial for sustainability. This study reports the synthesis of a graphitic-carbon nitride system modified with Pd nanoparticles, which exhibits prominent photocatalytic performance for Suzuki-Miyaura coupling reactions.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Sandra Abi Fayssal, Timothee Naret, Vincent Huc, Julien Buendia, Cyril Martini, Emmanuelle Schulz
Summary: The scalable synthesis of Pd-NHC cinnamyl complexes supported on benzyloxycalix[8]arene is reported. These catalysts are highly active for Buchwald-Hartwig cross-coupling reactions, enabling the coupling of aryl chlorides and bromides with alkyl and aryl amines at low catalytic loadings. The supported complexes also produce attractive unsymmetrical triarylamines and can even facilitate the synthesis of unprecedented Pd-catalyzed C-H activation products. Through an easy to implement procedure, these characterized catalysts combine the best features of homogeneous and heterogeneous catalysis, achieving high efficiency and low Pd leaching levels.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Jordi Colavida, Jose A. Lleberia, Antoni Salom-Catala, Aitor Gual, Ana Collado, Ennio Zangrando, Josep M. Ricart, Cyril Godard, Carmen Claver, Jorge J. Carbo, Sergio Castillon
Article
Chemistry, Physical
Myriam Y. Souleymanou, Fatima El-Ouahabi, Anna M. Masdeu-Bulto, Cyril Godard
Summary: New pyrene-tagged imidazolium salts and their corresponding carboxylates were synthesized and tested as organocatalysts in the cycloaddition of CO2 with epoxides. The best performing organocatalyst was immobilised onto carbon materials via pi-pi stacking interactions, showing activity and recoverability in the cycloaddition reaction. Despite a loss of activity, the catalyst heterogenised onto reduced graphene oxide was recycled several times and used for the transformation of various epoxides under mild conditions.
Article
Chemistry, Inorganic & Nuclear
Bianca K. Munoz, Monica Viciano, Cyril Godard, Sergio Castillon, Monica Garcia-Ruiz, Ma Dolores Blanco Gonzalez, Carmen Claver
Summary: The paper discusses the use of metal complexes as catalysts in the synthesis of propylene carbonate from carbon dioxide and propylene oxide. Iron and manganese complexes showed significantly higher activities compared to new cobalt complexes. By optimizing the conditions, a TOF of 1600 h-1 was achieved with the manganese (II) complex 2.
INORGANICA CHIMICA ACTA
(2021)
Article
Chemistry, Inorganic & Nuclear
Daniel Sanchez-Resa, Jorge A. Delgado, Maria Dolores Fernandez-Martinez, Chloe Didelot, Aimery De Mallmann, Kai C. Szeto, Mostafa Taoufik, Carmen Claver, Cyril Godard
Summary: In this study, Pd, Cu, and PdCu nanocatalysts stabilized by triphenylphosphine were prepared and supported on carbon nanotubes or phosphorus functionalized silica. The catalysts exhibited differences in reactivity in the semi-hydrogenation of alkynes, which could be correlated with the size and composition of the metallic nanoparticles and the nature of the support. Carbon-supported catalysts generally showed higher activities than silica-supported catalysts, with the bimetallic PdCu/CNTs catalyst being the most selective for alkyl substituted alkynes. This catalyst also showed good recyclability without loss of activity or selectivity.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Editorial Material
Chemistry, Inorganic & Nuclear
Cyril Godard, Carmen Claver, Ana C. Albeniz
Summary: Supported catalysts offer both the activity of molecular catalysts and the convenience and reusability of catalysts in a difference phase. With continuous solutions to common problems such as leaching, supported catalysts are becoming increasingly viable for applied research.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2022)
Review
Chemistry, Inorganic & Nuclear
Anna M. Masdeu-Bulto, Mar Reguero, Carmen Claver
Summary: Transformation of CO2 into consumer products is an alternative method to reduce global warming in addition to decreasing CO2 production. Photocatalytic route is an interesting way to convert CO2 into CO. Understanding the reaction mechanism is crucial for designing more efficient catalytic systems.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
M. Dolores Fernandez-Martinez, Cyril Godard
Summary: A simple procedure was used to synthesize two series of ligand-capped supported Pd nanoparticles catalysts, which were tested in formate synthesis. Among these series, PPh3 showed the most appropriate stabilizing ligand, while TiO2 was the most efficient support for these catalysts. The hydrogenation of CO2 was conducted under mild reaction conditions (1.8 MPa CO2, 1.8 MPa H-2, 60 degrees C) using water as a solvent and a base, resulting in excellent selectivity towards formates with a TON of 1032 (TOF of 69 h(-1), [HCOOK]=1.1 mol/l).
Article
Chemistry, Physical
Monica Viciano, Bianca K. Munoz, Ennio Zangrando, Cyril Godard, Sergio Castillon, Ma Dolores Blanco Gonzalez, Monica Garcia-Ruiz, Carmen Claver
Summary: A series of novel ONO ligands with an ionic pendant-armed were successfully synthesized and coordinated to cobalt and manganese precursors. Among these, the manganese complex showed the best catalytic activity towards the formation of propylene carbonate.
Article
Chemistry, Inorganic & Nuclear
Francisco Martinez-Espinar, Antoni Salom-Catala, Emma Breso-Femenia, Carmen Claver, Francesca Baletto, Josep M. Ricart, Bruno Chaudret, Jorge J. Carbo, Cyril Godard, Sergio Castillon
Summary: Ru and Rh nanoparticles catalyze the selective H/D exchange in phosphines using D2 as the deuterium source. The position of the deuterium incorporation is determined by the structure of the P-based substrates, while activity depends on the nature of the metal, the properties of the stabilizing agents, and the type of the substituent on phosphorus. The appropriate catalyst can thus be selected either for the exclusive H/D exchange in aromatic rings or also for alkyl substituents.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Roger Miro, Hilmar Guzman, Cyril Godard, Aitor Gual, Federica Zammillo, Thomas J. S. Schubert, Boyan Iliev, Angelica Chiodoni, Simelys Hernandez, Miriam Diaz de los Bernardos
Summary: Photoelectrochemical carbon dioxide reduction was successfully performed at ambient temperature and pressure using molecular chromophores and catalyst assemblies on CuGaO2-based electrodes in an ionic liquid organic solution. A series of molecular and supramolecular hybrid photocathodes were prepared by a simple and versatile methodology. The most promising conditions for CO2 reduction were determined and the results showed that the presence of the ionic liquid enhanced the conversion of CO2 to formic acid while suppressing hydrogen production. Anchoring supramolecular complexes on semiconductor photoelectrocatalysts boosted both carrier transport and catalytic activity, achieving a high faradaic efficiency of up to 81%.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Roger Miro, Emma Fernandez-Llamazares, Cyril Godard, Miriam Diaz de los Bernardos, Aitor Gual
Summary: By developing a simple procedure, the electrochemical properties of the iron(III) tetraphenylporphyrin chloride catalyst were significantly improved through a synergistic effect with imidazolium dications in the ionic liquid electrolyte. This enhancement led to improved performance in CO electrochemical production and allowed for various tandem CO2 reduction-carbonylation reactions to be conducted under mild conditions.
CHEMICAL COMMUNICATIONS
(2022)
Review
Chemistry, Multidisciplinary
Carmen Claver, Md Bin Yeamin, Mar Reguero, Anna M. Masdeu-Bulto
Article
Chemistry, Physical
Anton Cunillera, Miriam Diaz de los Bernardos, Martine Urrutigoity, Carmen Claver, Aurora Ruiz, Cyril Godard
CATALYSIS SCIENCE & TECHNOLOGY
(2020)
Article
Chemistry, Physical
Zi-Ye Liu, Qian-Yu Wang, Ji-Ming Hu
Summary: In this study, a layered carbon dot composite catalyst (NiFe LDH@CDs) was prepared using a one-step coprecipitation method, without the need for heating or hydrothermal treatment. The CD-functionalized catalyst facilitated rapid charge transfer and accelerated the oxygen evolution reaction. Additionally, the heterojunction structure formed between NiFe LDH and CDs efficiently suppressed photoelectron-hole recombination.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Rohit Kumar, Ankit Kumar Srivastava, Palaniyappan Nagarasu, Vedichi Madhu, Ekambaram Balaraman
Summary: We designed and synthesized a NN-CoII bidentate complex and used it for the amination of alcohols under mild and solventless conditions. The complex exhibited good reactivity towards both primary and sterically hindered secondary alcohols, providing high yields of amines. The pyrazole moiety in the ligand played a crucial role in the reaction. Furthermore, we demonstrated the reusability of the complex as a homogeneous cobalt catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Shivanand Chettri, Liang-Ting Wu, Sagarmani Rasaily, Debesh Sharma, Bikram Gurung, Rajani Dewan, Sudarsan Tamang, Jyh-Chiang Jiang, Anand Pariyar
Summary: Replicating the enzymatic surface microenvironment in vitro is challenging, but constructing an analogous model could facilitate our understanding of surface effects and aid in developing an efficient bioinspired catalytic system. In this study, five unique Cu2O morphologies were generated, and the surface morphology variations were found to be a consequence of differences in the exposure of low-index facets. The reactivity of Cu2O was found to be influenced by the proportion of {110} planes, with r-Cu2O exhibiting the highest reactivity.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Yong Tang, Jianhao Qiu, Dingliang Dai, Guanglu Xia, Lu Zhang, Jianfeng Yao
Summary: Defect engineering has been shown to improve the photocatalytic performance. This study investigated the use of defect-rich UiO-66-NH2 wrapped by ZnIn2S4 as a catalyst for photocatalytic H2O2 production. The defects in UiO-66-NH2 enhanced O-2 adsorption and charge separation, leading to higher H2O2 yield. The insights from this work can advance the research in defect engineering of MOFs and photocatalytic H2O2 synthesis.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Ruiyang Qu, Shuxin Mao, Jana Weiss, Vita A. Kondratenko, Evgenii V. Kondratenko, Stephan Bartling, Haifeng Qi, Annette-Enrica Surkus, Kathrin Junge, Matthias Beller
Summary: The hydrogenation of amides, a challenging reaction usually performed at high temperatures, has been achieved under milder conditions using a new Pt-MoOx/TiO2 catalyst. This catalyst system enables the selective hydrogenation of various amides and imides.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Xiaoran Niu, Ao Wang, Lei Tong, Lei Wang, Yuan Kong, Chenliang Su, Hai-Wei Liang
Summary: This study introduces a novel intermetallic PdCu3 catalyst supported on defective nanodiamond-graphene (ND@G), which exhibits high selectivity (95%) and remarkable activity (turnover frequency: 2940 h(-1)), six times higher than that of the commercial Lindlar catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Review
Chemistry, Physical
Zhiyuan Zheng, Yiming Yue, Hongying Zhuo, Qinggang Liu, Yanqiang Huang
Summary: This review presents the recent research advances on single-atom catalysis for deep reduction of CO2. Detailed introductions and summaries were classified into three categories based on proton-coupled multi-electron transfer approaches: strengthening metal-support interaction, rational design and regulation of coordination environment, and development of SACs with multi-atom active sites. The challenges and future research directions in the field of SACs for CO2 reduction are also proposed.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Shiv Kumar, Paramita Datta, Anup Bhunia, Swadhin K. Mandal
Summary: This article reports a transition-metal-free process for in situ denitrogenation of tosylhydrazones, resulting in the production of various sulfones. The authors used a phenalenyl-based odd alternant hydrocarbon as a photoredox catalyst, which acted as a potent oxidant to facilitate the denitrogenation reaction. The method showed wide functional-group tolerance and high yields, making it suitable for late-stage modification of natural products.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
L. A. Luque-Alvarez, J. Gonzalez-Arias, F. Romero-Sarria, T. R. Reina, L. F. Bobadilla, J. A. Odriozola
Summary: Currently, the production of acetic acid through the carbonylation reaction of methanol has limitations, leading to the exploration of alternative methods using heterogeneous catalysts. This study investigates the methanol carbonylation reaction over a Cu-H-MOR catalyst and proposes a reaction mechanism based on the catalytic behavior and performance of the catalyst. The results provide insights into the reaction mechanism and the involvement of acid and redox centers.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
