Article
Chemistry, Inorganic & Nuclear
Mark D. Straub, Liane M. Moreau, Yusen Qiao, Erik T. Ouellette, Michael A. Boreen, Trevor D. Lohrey, Nicholas S. Settineri, Stephan Hohloch, Corwin H. Booth, Stefan G. Minasian, John Arnold
Summary: This study discusses the synthesis of three new multinuclear uranium nitride complexes, showing the influence of amidinate ligand substituents and azide source on the composition and size of these complexes. By conducting N-15 isotopic labeling experiments, it was confirmed that the bridging nitride moieties in the complexes were formed via two-electron reduction of azide. Additionally, magnetic susceptibility measurements revealed a U(IV) oxidation state for the uranium centers in the complexes, with a trend of decreasing magnetic moments with increasing oxidation state along the U(III)-U(IV)-U(V) series.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Zahra Mohamad Sharif, Guel Altinbas Oezpinar, Sarah L. McOnie, Paul D. Boyle, Thomas Mueller, Kim M. Baines
Summary: The stereochemistry of the addition of NH3 to the stereoisomers of 1,2-di-tert-butyl-1,2-bis(2,4,6-triisopropylphenyl)disilene (Z-5 or E-5) was studied, resulting in the formation of two isomeric disilylamines 6 and 7. Kinetic and computational studies revealed that the formation of the donor adduct is the rate determining step in the addition reaction of ammonia and amines to disilenes. This research provides insights into the mechanism of this important fundamental reaction in disilene chemistry and the prediction of stereochemical outcomes in future NH sigma-bond activation reactions.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Gayathri B. Gange, Amanda L. Humphries, Mark D. Smith, Dmitry V. Peryshkov
Summary: In this study, we report the reactivity of carboranyl diphosphine with terminal alkynes, resulting in the formation of boron-containing phosphacycles. The reaction combines the activation of electron-deficient alkynes by phosphine groups and the redox behavior of carborane clusters, leading to the formation of a fused product of alkenylphosphonium cycle and reduced carborane cluster.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Eduard O. Bobylev, Bas de Bruin, Joost N. H. Reek
Summary: This study investigates the influence of impurities from different metal precursors on the kinetic properties of metal organic polyhedra (MOP) and finds that tiny amounts of halide contaminants can lower the energy requirement for selective sphere formation, making the MOP more dynamic, especially when bulky substrates are used.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Organic
Xia-xin Sheng, Yu-jia Du, Jun-hua Li, Qiao-qiao Teng, Ming Chen
Summary: This article describes a palladium-catalyzed photoinduced N-to-alkyl radical relay Heck reaction, where o-alkylbenzamides at benzylic sites are reacted with vinyl arenes. The reaction does not require exogenous photosensitizers or external oxidants, and is proposed to proceed via a N-to-alkyl hybrid palladium-radical mechanism. The reaction occurs under mild conditions, allowing a wide range of functional groups to be compatible. The products can be easily transformed into azepinone derivatives, which are commonly found in pharmaceuticals and natural products.
Article
Chemistry, Multidisciplinary
David F. Nippa, Kenneth Atz, Remo Hohler, Alex T. Muller, Andreas Marx, Christian Bartelmus, Georg Wuitschik, Irene Marzuoli, Vera Jost, Jens Wolfard, Martin Binder, Antonia F. Stepan, David B. Konrad, Uwe Grether, Rainer E. Martin, Gisbert Schneider
Summary: A late-stage functionalization platform based on geometric deep learning and high-throughput experimentation was developed, enabling the optimization of complex drug molecules. The computational model accurately predicted reaction outcomes, yields, and regioselectivity, reducing the need for de novo synthesis.
Article
Chemistry, Multidisciplinary
Huiling Shao, Suman Chakrabarty, Xiaotian Qi, James M. Takacs, Peng Liu
Summary: The use of conformationally flexible TADDOL-derived ligands in Rh-catalyzed asymmetric hydroboration reactions was found to enhance reactivity and selectivity by promoting asymmetric construction of the carbon center and controlling ligand-substrate interactions in different elementary steps. The flexibility of the ligand backbone allowed for distinct steric environments that facilitated the favorable reaction pathways.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Multidisciplinary Sciences
Hengjun Cui, Andreas U. Mueller, Marc Leibundgut, Jiawen Tian, Nenad Ban, Eilika Weber-Ban
Summary: This study presents crystal structures of Dop in different functional states, providing insights into the catalytic mechanism of this enzyme. Pupylation and depupylation are reversible protein modification processes mainly acting in members of Actinobacteria.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Ravi Yadav, Paul Janssen, Marcel Schorpp, Lutz Greb
Summary: Anti-van't Hoff-Le Bel configured p-blockelementspecies possess intrinsically high reactivity and are thus challenging to isolate. Consequently, numerous elements in this configuration, including square-planar germanium(IV), remain unexplored. Herein, we follow a concept to reach anti-van't Hoff-Le Bel reactivity by ligand dissociation from a rigid calix[4]pyrrole germanein its bis(thf) adduct. While the macrocyclic ligand assures square-planar coordination in the uncomplexed form, the labile thf donors provide robustness for isolation on a multigram scale. Unique properties of a low-lying acceptor orbital imparted to germanium(IV) can be verified, e.g., by isolating an elusive anionic hydrido germanate and exploiting it for challenging bond activations. Aldehydes, water, alcohol, and a CN triple bond are activated for the first time by germanium-ligand cooperativity. Unexpected behaviors against fluoride ion donors disclose critical interferences of a putative redox-coupled fluoride ion transfer during the experimental determination of Lewis acidity. Overall, we showcase how ligand lability grants access to the uncharted chemistry of anti-van't Hoff-Le Bel germanium(IV) and line up this element as a member in the emerging class of structurally constrained p-block elements.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
S. M. Melikova, K. S. Rutkowski, K. Orzechowski, M. Rospenk
Summary: The reversible interaction between halothane and molecular targets is largely defined by the proton donor ability of the C-H group, forming a hydrogen bond of the CH center dot center dot center dot B type. The presence of heavy halogen atoms in the CHClBr group can also lead to the formation of a CX center dot center dot center dot B halogen bond as an alternative target grip option. Experimental results suggest the formation of a trimer in liquefied krypton, stabilized by hydrogen and halogen bonds between halothane and electron donor targets.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Organic
Chunling Blue Lan, Karine Auclair
Summary: Amide bonds are commonly constructed through lactone aminolysis, and this study presents 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) as an effective catalyst for this reaction under mild conditions. The methodology is compatible with a wide range of lactones and amines (>50 examples), including natural products and pharmaceuticals, and it is applicable to the synthesis of bioactive molecules. Mechanistic studies reveal the involvement of acyl-TBD as the reactive intermediate in this reaction.
JOURNAL OF ORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Jiabin Ni, Xiaowen Xia, Wei-Feng Zheng, Zhaobin Wang
Summary: Cyclopropanols and cyclopropylamines are important structural motifs in medicinal chemistry and exhibit diverse reactivities in organic synthesis. However, the development of a general protocol for obtaining these cyclopropyl derivatives from stable and readily available starting materials remains a challenging task due to the high ring strain energy. In this study, a Ti-based catalyst was found to effectively promote the diastereoselective syntheses of cyclopropanols and cyclopropylamines from widely accessible carboxylic derivatives and terminal olefins. This method represents the first example of directly converting alkyl carboxylic acids into cyclopropanols and offers broad substrate scope and good functional group compatibility.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
T. Taeufer, F. Dankert, D. Michalik, J. Pospech, J. Bresien, C. Hering-Junghans
Summary: The reactivity of Cp*Ga (Cp* = C5Me5) towards phosphanylidenephosphoranes was investigated. Under irradiation at 405 nm at low temperatures, phosphagallenes (Dip)TerP = GaCp* (1a) and (Tip)TerP = GaCp* (1b) were formed, accompanied by release of PMe3. Reformation of (Ar)TerP(PMe3) and Cp*Ga was observed upon warming the reaction mixture to ambient temperatures without irradiation. 1a and 1b were isolated and found to react cleanly with CO2 and H2O to afford (Dip)TerPCO (3) and (Dip)TerPH(2) (4), respectively.
Article
Chemistry, Multidisciplinary
Chen-Yu Shi, Dan-Dan He, Bang-Sen Wang, Qi Zhang, He Tian, Da-Hui Qu
Summary: This study reports a supramolecular poly(disulfides) network with tunable clusteroluminescence, which exhibits mechanical adaptivity and robustness due to the reticular H-bonds. Efficient clusteroluminescence and phosphorescence at 77 K are achieved through slow backbone disulfide exchange and fast side-chain metal coordination, enabling orthogonally tunable luminescence. Further exploration on reprocessability and chemical closed-loop recycling of dynamic networks is feasible for sustainable materials. The synergistic strategy of dynamic chemistry provides a novel pathway and potential opportunities for smart emissive materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Jia Qiao, Rui-Nan Ci, Qi-Chao Gan, Cheng Huang, Zan Liu, Hui-Lan Hu, Chen Ye, Bin Chen, Chen-Ho Tung, Li-Zhu Wu
Summary: The activation of the alpha-C-H bond of ketones typically requires an amine and a directing group to guide the reaction selectivity in amine-catalysis carbonyl chemistry. Here, we report the first alpha-alkylation of cyclic ketones in the absence of an amine catalyst and directing group. A direct and selective activation of the inert alpha-C-H bond of ketones chelating on the surface of colloidal quantum dots is achieved, leading to the formation of an alpha-carbon radical intermediate. This transformation opens a new way for alpha-C-H functionalization of ketones in carbonyl chemistry.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Medicinal
Krystian Kolodziej, Joanna Romanowska, Jacek Stawinski, Jerzy Boryski, Aleksandra Dabrowska, Andrzej Lipniacki, Andrzej Piasek, Adam Kraszewski, Michal Sobkowski
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
(2015)
Article
Chemistry, Multidisciplinary
Magdalena Materna, Jacek Stawinski, Agnieszka Kiliszek, Wojciech Rypniewski, Michal Sobkowski
Article
Biochemical Research Methods
Krystian Kolodziej, Joanna Romanowska, Jacek Stawinski, Adam Kraszewski, Michal Sobkowski
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2015)
Article
Chemistry, Medicinal
Joanna Romanowska, Michal Sobkowski, Agnieszka Szymanska-Michalak, Krystian Kolodziej, Aleksandra Dabrowska, Andrzej Lipniacki, Andrzej Piasek, Zofia M. Pietrusiewicz, Marek Figlerowicz, Andrzej Guranowski, Jerzy Boryski, Jacek Stawinski, Adam Kraszewski
JOURNAL OF MEDICINAL CHEMISTRY
(2011)
Article
Chemistry, Organic
Joanna Romanowska, Agnieszka Szymanska-Michalak, Malgorzata Pietkiewicz, Michal Sobkowski, Jerzy Boryski, Jacek Stawinski, Adam Kraszewski
LETTERS IN ORGANIC CHEMISTRY
(2009)
Article
Chemistry, Multidisciplinary
Michal Sobkowski, Jacek Stawinski, Adam Kraszewski
NEW JOURNAL OF CHEMISTRY
(2009)
Article
Biochemistry & Molecular Biology
Michal Sobkowski, Jacek Stawinski, Adam Kraszewski
NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS
(2010)
Article
Chemistry, Inorganic & Nuclear
Michal Sobkowski, Jadwiga Jankowska, Jacek Stawinski, Adam Kraszewski
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS
(2011)
Article
Chemistry, Inorganic & Nuclear
Michal Sobkowski, Jacek Stawinski, Adam Kraszewski
TETRAHEDRON-ASYMMETRY
(2010)
Article
Chemistry, Medicinal
Joanna Romanowska, Krystian Kolodziej, Michal Sobkowski, Marta Rachwalak, Tomasz Jakubowski, Justyna Golebiewska, Adam Kraszewski, Jerzy Boryski, Aleksandra Dabrowska, Jacek Stawinski
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
(2019)
Article
Chemistry, Organic
Marta Rachwalak, Malgorzata Rozniewska, Justyna Golebiewska, Tomasz Jakubowski, Michal Sobkowski, Joanna Romanowska
SYNTHETIC COMMUNICATIONS
(2020)
Review
Chemistry, Multidisciplinary
Marta Rachwalak, Joanna Romanowska, Michal Sobkowski, Jacek Stawinski
Summary: This review briefly explains the chemical synthesis of nucleoside di- and triphosphates within a historical background, and discusses their potential use as pronucleotides in anti-HIV therapy.
APPLIED SCIENCES-BASEL
(2021)
Review
Chemistry, Multidisciplinary
Adam Kraszewski, Michal Sobkowski, Jacek Stawinski
FRONTIERS IN CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Michal Sobkowski
COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS
(2010)
Article
Chemistry, Multidisciplinary
Zihan Ma, Lishuang Wang, Tingting Chen, Guangning Wang
Summary: In this study, two kinds of 3D self-doped (N/O) lilac-based and coriander-based porous carbons with high performance have been prepared.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Qin Wang, Yun-Fan Yan, Jiao-Lin Weng, Ying Huang, Fu Yang, Hao-Hui Xie, Fei Tan, Fa-Kun Zheng, Jian-Gang Xu
Summary: Balancing energy and mechanical sensitivities is a challenging issue in the field of energetic materials. This study constructed a 3D energetic metal-organic framework with nitrogen-rich ligand and NO3- anions. The framework demonstrated high stability, energy density, and excellent mechanical sensitivities, making it a potential insensitive energetic material.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Marrium Saeed, Urooj Kamran, Amina Khan, Md Irfanul Haque Siddiqui, Hasan Jamal, Haq Nawaz Bhatti
Summary: In this study, magnesium-aluminum layered double hydroxides (Mg-Al-LDH) were synthesized using an environmentally friendly hydrothermal technique for adsorbing the dye reactive green 5 (RG5). To improve the adsorption capability, composites were prepared by combining Mg-Al-LDH with low-cost Mangifera indica stone biomass (MISB). The results showed that the composites had high adsorption capacities for RG5 dye and could be regenerated.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Xuanlin Zhan, Xiaojie Li, Yunyan Zeng, Siyan Jiang, Chao Pan, Shiyu Pan, Jiaquan Huang, Heqian Zhang, Zhiwei Qin
Summary: This study reports on the potential prospects of natural products derived from the rhizosphere for the development of antibiotics and herbicides, as well as the advancements in cultivating a mutant strain that produces a substantial quantity of lydicamycins, a potent family for herbicide development.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Jie Zhu, Jiangtao Yu, Linhua Zhu, Xiaoxiao Yu, Jixing Liu, Yanhong Chao, Jingzhou Yin, Peiwen Wu, Jian Liu, Wenshuai Zhu
Summary: This study successfully demonstrates the 3D printing of attapulgite monoliths and investigates the influence of thermal treatment on their properties. The thermal treated monoliths show superior catalytic performance at low temperatures.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yanzhu Ye, Yixiang Ye, Jiannan Cai, Zhongshui Li, Shen Lin
Summary: In this paper, a novel Pt/CoP/C photo-electro synergistic catalyst was successfully synthesized and its performance was investigated. The catalyst exhibited excellent photo-electro catalytic performance, with significantly higher hydrogen production compared to a commercial catalyst. The introduction of cobalt phosphide and the existence of Co3O4 were identified as key factors for enhancing the catalytic activity.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Nurul Hidayah Abu Bakar, Wan Norfazilah Wan Ismail, Hartina Mohd Yusop, Noreen Farzuhana Mohd Zulkifli
Summary: Hydrophobic coatings inspired by the lotus effect have gained popularity for their ability to solve various problems. The sol-gel method, utilizing silica, alumina, and titania, is explored as an environmentally friendly approach to produce water-based hydrophobic coatings. This study focuses on producing water-based hydrophobic coatings for cotton and polyester fabrics using a one-step sol-gel method. The coated fabrics exhibited improved hydrophobic properties, altered surface morphologies, and lower air permeability compared to uncoated fabrics. TEOS-PDMS coating provides a promising approach for enhancing the hydrophobic and surface properties of cotton and polyester fabrics.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Nikita Belko, Hanna Maltanava, Anatol Lugovski, Polina Shabunya, Sviatlana Fatykhava, Evgeny Bondarenko, Pavel Chulkin, Sergey Poznyak, Michael Samtsov
Summary: This study investigates the difference in electrochemical behavior between rhodamine B hydrazide and rhodamine B acylhydrazone, and finds that rhodamine B acylhydrazone exhibits higher reversibility in electrooxidation. These results can be applied for developing new sensors with desired electrochemical properties.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Showket Ahmad Bhat, Mohd Ikram
Summary: In this study, 0-3 particulate multiferroic composites were synthesized and characterized. The composites exhibited excellent ferroelectric and ferromagnetic properties, as well as high piezoelectric strain and magnetoelectric coupling effects.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Carla Gomes, Mariana Costa, Susana M. M. Lopes, Bernardo Albuquerque Nogueira, Rui Fausto, Jose A. Paixao, Teresa M. V. D. e Melo, Luisa M. D. R. S. Martins, Marta Pineiro
Summary: The development of sustainable processes requires the integration of green chemistry principles. In this study, a solvent-free synthesis method was developed to prepare new copper catalysts, which efficiently catalyze cycloaddition reactions under solvent-free mechanochemical conditions. Through this process, the principles of atom economy, reduction of solvents and auxiliaries, design for energy efficiency, and reduction of derivatives and catalysis are combined.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Zhihua Liu, Jinzhe Li, Jianguo Zhou
Summary: This study demonstrates the enhancement of photoelectrochemical activity of BiFeO3 photoelectrodes through ion modification, which increases visible light absorption and active area, leading to improved PEC water splitting performance.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yisheng Zhang, Wensong Li, Jing Li, Fang Li, Wei Xue, Xinqiang Zhao, Yanji Wang
Summary: Pt/C and SO42-/ZrO2 were used as catalysts for the synthesis of p-aminophenol through the catalytic transfer hydrogenation of nitrobenzene in water with formic acid as the hydrogen source. The optimal Pt loading for PAP selectivity was found to be 1 wt%. The presence of different valence states of Pt affected both the nitrobenzene hydrogenation and formic acid decomposition. Among different solid acid catalysts tested, SO42-/ZrO2 exhibited the highest catalytic activity for p-aminophenol formation. Under the optimized reaction conditions, the conversion of nitrobenzene reached 80.0%, with a selectivity of 47.6% for p-aminophenol.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Pradyota Kumar Behera, Papita Behera, Amlan Swain, Santosh Kumar Sahu, Ajeena Sahoo, Laxmidhar Rout
Summary: We have developed a simple and direct method for the synthesis of diaryl ether using an oxygen bridged bimetallic CuMoO4 nanocatalyst under mild reaction conditions. The catalyst exhibited tolerance towards a wide range of substrates with various functional groups. It is efficient and recyclable. This methodology allows easy access to nitrofen derivatives (herbicides) from unactivated 2,4-dichlorophenol, which are important for agriculture and pharmaceuticals.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Yihua Fu, Yan Zhang, Changwei Hu, Zhishan Su
Summary: The mechanism of the reaction between CO2 and styrene oxide for cyclic carbonate was revealed using density functional theory calculations. The noncatalytic reaction occurred via a concerted mechanism, while in the presence of guanidine and tetrabutylammonium iodide (TBAI) co-catalysts, the epoxide ring-opening by nucleophilic attack of an iodide anion was predicted to be the rate-determining step. Guanidine acted as the H-bond donor to activate styrene oxide, facilitating the reaction with a lower activation barrier.
NEW JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Saikat Khamarui, Sirshendu Ghosh
Summary: Copper nanorods (Cu-NRs) exhibit significant plasmonic behavior and can act as efficient catalysts in redox processes and coupling. A benign decarboxylative approach, utilizing localized surface plasmon resonance (LSPR) assisted catalysis with Cu-NRs, has been developed for the production of alkane analogues from alkyl carboxylic acids under visible light. The catalyst shows a broad substrate scope and high functional group tolerance, without the need for an external oxidant or proton source. A plausible mechanism for this recyclable nano-catalyst has also been proposed based on control experiments.
NEW JOURNAL OF CHEMISTRY
(2024)