Article
Chemistry, Multidisciplinary
Liming Deng, Feng Hu, Mingyue Ma, Shao-Chu Huang, Yixing Xiong, Han-Yi Chen, Linlin Li, Shengjie Peng
Summary: Designing a well-defined metal-support interfacial bond is an effective strategy to optimize the intrinsic activity of noble metals, but it is also challenging. The developed quantum-sized metal nanoparticles anchored on nickel metal-organic framework nanohybrids demonstrate excellent hydrogen evolution reaction (HER) activity at all pH values, surpassing even commercial Pt/C and recent noble-metal catalysts. The interfacial-bond-induced electron redistribution plays a crucial role in enhancing the reaction kinetics and overall performance of the hybrids.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Ruo-Yao Fan, Hui-Ying Zhao, Zi-Yi Zhao, Wen-Hui Hu, Xin Liu, Jian-Feng Yu, Han Hu, Yong-Ming Chai, Bin Dong
Summary: In this study, a highly active Fe-Ni(oxy)hydroxide catalytic layer was successfully prepared on iron foam and nickel foam by utilizing the interaction of Fe-Ni heteroatomic pair, which played a crucial role in providing excellent oxygen evolution reaction (OER) performance.
Article
Chemistry, Organic
Fang Wang, Jiaming Chen, Xiaoqi Jia, Dailin Zhuang, Zhenyang Wan, Lifang Ma, Ziyuan Li
Summary: A remote directing group-enabled radical relay strategy for benzylic direct C(sp3)-H alkoxylation with alcohols at room temperature is developed, which achieves satisfactory site-selectivity, chemoselectivity, and reaction scope under simple and mild conditions without the need for ligands or additives.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Applied
Chunzhe Pei, Jiarui Zong, Bin Li, Baiquan Wang
Summary: The study reports the direct carboxylation of aryl C-H bonds in benzamides catalyzed by nickel under 1 atm of CO2, yielding various products. Detailed mechanistic studies suggest the possible involvement of a Ni(0)-Ni(II)-Ni(I) catalytic cycle in this reaction.
ADVANCED SYNTHESIS & CATALYSIS
(2022)
Article
Chemistry, Physical
Henrik Ostrom, Bingjie Zhang, Tiffany Vallejo, Bryn Merrill, Jeremy Huang, Jerry LaRue
Summary: Methanol decomposition on Ni(111) surfaces has been studied in the presence and absence of oxygen, revealing that both C-H and O-H bonds break to form carbon monoxide and atomic hydrogen on the surface. The presence of oxygen stabilizes the surface H atoms, leading to slightly higher desorption temperatures.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Organic
David F. Fernandez, Maria Gonzalez-Esguevillas, Sebastian Keess, Felix Schafer, Jens Mohr, Andre Shavnya, Thomas Knauber, David C. Blakemore, David W. C. MacMillan
Summary: We present a general approach to synthesis of diversified libraries featuring aliphatic core rings via photoredox catalysis under mild conditions.
Article
Energy & Fuels
Xiao Zhou, Xian-Yong Wei, Yu-Miao Ma, Zhi-Min Zong
Summary: An active bifunctional nickel-based catalyst was prepared and successfully applied in the catalytic hydroconversion of alkali lignin. The soluble portions from catalytic hydroconversion showed a richer variety and higher yields of products compared to non-catalytic hydroconversion. The catalyst exhibited stability in the hydrocracking process of benzyloxybenzene.
Article
Chemistry, Organic
Javeed Ahmad Tali, Ravi Shankar
Summary: Here, we report an unprecedented protocol using ruthenium-catalyzed annulation for the synthesis of 6H-chromeno[4 ',3 ':4,5]imidazo[1,2-a]pyridin-6-one, and a new method for intramolecular chelation-assisted C-H activation to produce functionalized 2-(3-formylimidazo[1,2-a]pyridin-2-yl)phenyl acetate. Furthermore, a one-pot approach using ruthenium catalysis and formic acid has been developed for the gram-scale synthesis of bis(2-phenylimidazo[1,2-a]pyridin-3yl)methane (BIP) and the late-stage functionalization of zolimidine, a marketed drug, with good yield.
Article
Chemistry, Multidisciplinary
Tobias Pinkert, Mowpriya Das, Malte L. Schrader, Frank Glorius
Summary: This study describes the formation of quaternary carbon centers with excellent diastereoselectivity via a strain-release protocol, involving Cp*Rh(III)-catalyzed C-H activation to generate an organometallic species for coupling with strained bicyclobutanes and a prochiral carbon electrophile. The method demonstrates the broad potential of BCBs in transition metal catalysis and exhibits ample functional group tolerance, with products convertible into valuable alpha-quaternary beta-lactones. Preliminary mechanistic investigations suggest a twofold C-C bond cleavage sequence involving sigma-bond insertion and beta-carbon elimination.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Inorganic & Nuclear
Hsien-Cheng Yu, Joshua Telser, Neal P. Mankad
Summary: A variety of heteromultinuclear Ni-I/[M-CO] clusters supported by an N-heterocyclic carbene ligand were successfully synthesized in this study by reacting the NiI precursor with [M-CO](-) reagents under different conditions. These clusters with different cores were fully characterized, revealing new coordination reactions and describing their thermolytic C-Cl activation process.
Article
Chemistry, Physical
Safaa Sader, Evangelos Miliordos
Summary: Metal anions show better performance in methane oxidation reactions compared to cationic centers, as they interact weakly with the produced methanol, facilitating its fast removal and preventing methane overoxidation.
JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
Article
Chemistry, Inorganic & Nuclear
L. Diaz, V. D. Rodriguez, M. Gonzalez-Rodriguez, E. Rodriguez-Castellon, M. Algarra, P. Nunez, E. Moretti
Summary: Low-cost M/TiO2 semiconductor catalysts were prepared by impregnating five different first row transition metals on a commercial titania support, with Cu/TiO2 showing the best photocatalytic activity for hydrogen production under both UV and visible light. Ni/TiO2 and Co/TiO2 also exhibited significant photocatalytic activity under UV light. The Cu/TiO2 catalyst was characterized by TEM and XPS measurements, showing the dispersion of copper species on TiO2 and the oxidation-reduction process during the hydrogen production reaction. Impregnated TiO2 showed higher H-2 production rates compared to non-impregnated TiO2, making Cu/TiO2 a cost-effective alternative to Pt/TiO2 for hydrogen production.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Multidisciplinary
Zhuang Wang, Kaikai Niu, Yuxiu Liu, Hongjian Song, Qingmin Wang
Summary: A mild and convenient protocol for the synthesis of alpha-alkoxy isochroman derivatives has been reported in this study. The electrochemical alpha-C(sp(3))-H/O-H cross-coupling reactions of isochromans and alcohols in the presence of benzoic acid were used, which facilitated the electro-oxidation process and increased the product yield. The desired coupling products were obtained in moderate to high yields.
CHEMICAL COMMUNICATIONS
(2022)
Article
Engineering, Environmental
Hanyu Tang, Bei Ma, Zhaoyong Bian, Hui Wang
Summary: Single-atom Fe and single-atom Ni composite nitrogen-doped graphene (FeSA/CN/NiSA) cathode catalyst exhibited excellent removal performance and selectivity for chlorobenzenes. The coupling of M-O and M-N active sites improved the activity and stability of the catalyst and reduced the energy barrier of C-Cl bond breaking. The stepwise dechlorination reactions of chlorobenzenes on the FeSA/CN/NiSA-NiF cathode showed high efficiencies and Faradaic efficiencies.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hairong Lyu, Zuowei Xie
Summary: A unique approach to vertex-selective catalytic B-H amination has been developed, allowing the reaction to occur at either the B(3)- or B(4)-position in o-carboranes. By using different transition metal catalysts, the dehydrogenative BH/NH cross-coupling of o-carboranes and free amines has been achieved, resulting in a wide variety of B(3)- or B(4)-aminated o-carboranes with high regioselectivity.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Xiaoyan Sun, Shaodong Zhou, Lei Yue, Cheng Guo, Maria Schlangen, Helmut Schwarz
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
Article
Chemistry, Multidisciplinary
Helmut Schwarz, Knut R. Asmis
CHEMISTRY-A EUROPEAN JOURNAL
(2019)
Article
Chemistry, Multidisciplinary
Shaodong Zhou, Xiaoyan Sun, Lei Yue, Maria Schlangen, Helmut Schwarz
CHEMISTRY-A EUROPEAN JOURNAL
(2019)
Article
Chemistry, Multidisciplinary
Mathias Paul, Eric Detmar, Maria Schlangen, Martin Breugst, Joerg-Martin Neudoerfl, Helmut Schwarz, Albrecht Berkessel, Mathias Schaefer
CHEMISTRY-A EUROPEAN JOURNAL
(2019)
Article
Chemistry, Multidisciplinary
Xiaoyan Sun, Shaodong Zhou, Lei Yu, Maria Schlangen, Helmut Schwarz
CHEMISTRY-A EUROPEAN JOURNAL
(2019)
Article
Chemistry, Physical
Tian Tian, Xiaoli Sun, Thomas Weiske, Yuxi Cai, Caiyun Geng, Jilai Li, Helmut Schwarz
Article
Chemistry, Multidisciplinary
Caiyun Geng, Jilai Li, Thomas Weiske, Helmut Schwarz
CHEMISTRY-A EUROPEAN JOURNAL
(2019)
Article
Chemistry, Multidisciplinary
Ya-Ke Li, Sreekanta Debnath, Maria Schlangen, Wieland Schoellkopf, Knut R. Asmis, Helmut Schwarz
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
Article
Chemistry, Multidisciplinary
Jilai Li, Caiyun Geng, Thomas Weiske, Helmut Schwarz
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Chemistry, Multidisciplinary
Jilai Li, Caiyun Geng, Thomas Weiske, Helmut Schwarz
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Article
Chemistry, Multidisciplinary
Jilai Li, Caiyun Geng, Thomas Weiske, Mingfei Zhou, Jun Li, Helmut Schwarz
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Review
Chemistry, Multidisciplinary
Dan He, Yawen Li, Fuwen Zhao, Yuze Lin
Summary: High trap density in organic solar cells leads to localized charge carriers and reduced carrier lifetime, limiting device efficiency. This feature article summarizes the recent advances of trap suppression by material design and device engineering.
CHEMICAL COMMUNICATIONS
(2024)
Review
Chemistry, Multidisciplinary
Olivier Monfort, Arshitha Madhusudhan, Martin Motola
Summary: This article presents the advantages of coupling photocatalysis and Fenton-based processes for environmental remediation and discusses their synergy. It critically examines the simultaneous triggering of these two processes and provides insights into research approaches. The study aims to enhance understanding of this complex process and highlight the potential integration of new catalysts in current wastewater treatment technology.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Manideepa Dhar, Chittaranjan Mishra, Avijit Das, Uttam Manna
Summary: An approach of 'polymerization of monomers in its aggregated form' has been introduced to tailor the water wettability of fibrous and porous substrates, achieving hydrophobicity to superhydrophobicity transition, as well as patterned wettability. This facile chemical method provides a durable coating with adjustable and patterned wettability for various potential applications.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Saswat Ranjan Bhoi, Chhanda Debnath, Shikha Gandhi
Summary: In this article, a novel catalytic reaction using Pd(0) and Bronsted acid is reported for the synthesis of biologically important imidazolidinone-fused N-heterocycles through redox-neutral intramolecular N-allylation of indoles and pyrroles with alkynes. This atom-economical method is applicable to a wide range of substrates and eliminates the need for leaving groups or oxidizing agents commonly used in traditional allylation reactions.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Longkun Chen, Mingshuai Zhang, Meichen Liu, Zhuoyuan Liu, Yuetong Qiu, Zhilai Zhang, Fuchao Yu, Jiuzhong Huang
Summary: In this study, an efficient Rh(III)-catalyzed selective mono- and dual-C-H bond functionalization/cyclization with iodonium ylide as the sole coupling partner was demonstrated. Fused benzodiazepine skeletons were obtained in excellent yields, providing an improved approach to dual C-H unsymmetrical functionalization.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Alice Kennett, Sven Epple, Gabriella van der Valk, Irene Georgiou, Evelyne Gout, Romain R. Vives, Angela J. Russell
Summary: This study presents the design and synthesis of sulfated disaccharide inhibitors based on IdoA(2S)-GlcNS(6S), which showed potent inhibition of Sulf-2. The results suggest that IdoA(2S)-GlcNS(6S) is the shortest fragment size required for effective inhibition of Sulfs, and a trisulfated disaccharide is identified as the minimal fragment size of heparan sulfate for effective endosulfatase inhibition.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Mauro Garbini, Andrea Brunetti, Riccardo Pedrazzani, Magda Monari, Massimo Marcaccio, Giulio Bertuzzi, Marco Bandini
Summary: The self-adaptability of galvanostatic electrolysis was found to be helpful in a multistage chemo- and diastereoselective electrochemically promoted cyclodimerization of chalcones. Through a series of reductive events, densely functionalized cyclopentanes with five contiguous stereocenters were obtained (25 examples, yields up to 95%, dr values up to >20:1). Further experimental and electrochemical investigations indicated the crucial role of dynamic kinetic resolution of the aldol intermediate in the reaction mechanism.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Dhananjay S. Nipate, Neha Meena, Prakash N. Swami, Krishnan Rangan, Anil Kumar
Summary: In this study, the synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines was achieved through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols. The method showed a wide substrate scope, excellent functional group tolerance, good to high yields of annulated products, and the capability for scaled-up synthesis. A tentative mechanism of the annulation reaction was proposed based on a preliminary mechanistic investigation.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Ruonan Zhang, Abudukadi Tudi, Xia Yang, Xuping Wang, Zhihua Yang, Shujuan Han, Shilie Pan
Summary: A new lead tellurium borate material with a unique fundamental building block [B4O10] was synthesized and found to exhibit high birefringence. The structure-property relationship was discussed using first-principles calculations.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Amresh Kumar Singh, Baishali Thakurta, Anupam Giri, Monalisa Pal
Summary: This study introduces three key concepts for the quick synthesis of large-scale high-quality 2D materials films and their utilization in device fabrication.
CHEMICAL COMMUNICATIONS
(2024)
Article
Chemistry, Multidisciplinary
Reina Hagiwara, Shun Nishimura, Kosuke Okeyoshi
Summary: A copolymer-conjugated nanocatalytic system has been developed to improve electron transfer and enhance photoinduced H2 generation.
CHEMICAL COMMUNICATIONS
(2024)