Article
Chemistry, Organic
Yongjie Shi, Jingxin Wang, Qin Yin, Xumu Zhang, Pauline Chiu
Summary: An asymmetric 1,2-reduction of cyclic alpha,beta-unsaturated ketones was achieved under mild conditions, catalyzed by in situ generated copper hydride ligated with (R)-DTBM-C-3*-TunePhos. The reaction produced various enantiomerically enriched cyclic allylic alcohols, with up to 98% ee enantioselectivities for alpha-brominated cydoalkenones and moderate enantioselectivities for substrates without alpha-substituents.
Article
Chemistry, Organic
Dustin D. Youmans, Hai N. Tran, Levi M. Stanley
Summary: Nickel-catalyzed isomerizations of homoallylic alcohols and a bishomoallylic alcohol proceed efficiently without the need for an exogenous ligand. The corresponding ketones are obtained in high yields (≤98%).
Article
Chemistry, Physical
Hanna Stachowiak-Dluzynska, Grzegorz Hreczycho
Summary: A cobalt-catalyzed addition of hydrosilanes to unsaturated carbon-oxygen bonds has been developed using easily accessible and inexpensive PNP-type pincer ligands. The reaction efficiently transforms a wide range of ketones into silyl ethers or secondary alcohols with high yields. The use of silanes as both substrates and activators eliminates the need for external additives.
Article
Chemistry, Organic
Felipe C. Demidoff, Guilherme S. Caleffi, Marcella Figueiredo, Paulo R. R. Costa
Summary: The article describes the one-pot C=C/C=O reduction of chalcones using a oxo-tethered-Ru(II) precatalyst, showing good yields and enantiomeric purities. The results indicate that the enones are first reduced to dihydrochalcones and then converted into 1,3-diarylpropan-1-ols. The study also evaluates the effects of different groups at various positions on the aromatic ring and highlights the tolerance of the 2-OH group.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Organic
Nandita Biswas, Dipankar Srimani
Summary: The study investigated the activity of methanol as a methylating agent and its application in various reactions, achieving good results. The slow and steady generation of in situ formed aldehyde was found to be the key factor for obtaining higher yields of the methylated product. In addition, the study also demonstrated environmental benefits and a wide substrate scope for the reactions.
JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Organic
Yan Hu, Jiang Nan, Jiacheng Yin, Guanjie Huang, Xin Ren, Yangmin Ma
Summary: A novel Rh-catalyzed C-H/C-H alkenylation of N-arylmethanimines with vinylene carbonate has been reported, giving access to C3,C4-nonsubstituted quinolines. This process is simple, requires lower catalyst loading, and allows for postfunctionalization with bioactive molecules.
Article
Chemistry, Multidisciplinary
Xintuo Yang, Xiang Li, Pinhong Chen, Guosheng Liu
Summary: A novel Pd(II)-catalyzed enantioselective Markovnikov hydrooxygenation of unactivated terminal alkenes using a substituted pyridinyl oxazoline (Pyox) ligand has been developed. The (EtO)(2)MeSiH/BQ redox system is crucial for the highly selective and efficient hydrooxygenation, where alkylpalladium(II) species generated from enantioselective oxypalladation step is reduced by silane. This method provides an efficient access to optically pure alcohol esters from easily available alkenes with excellent enantioselectivities and features a broad substrate scope.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Xiaolei Li, Jicheng Wu, Weiping Tang
Summary: Human glycans are mainly composed of nine common sugar building blocks, while hundreds of different monosaccharides have been found in bacteria. A new efficient strategy has been developed to access rare sugars from common monosaccharides, which can be used for constructing glycoside skeletons in natural products or bioactive compounds.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Organic
Xiao Yi, Yirui Chen, An Huang, Dingguo Song, Jiaying He, Fei Ling, Weihui Zhong
Summary: A series of novel chiral ligands were developed for the synthesis of beta-amino alcohols with high enantioselectivity and broad substrate scope, enabling late-stage functionalization of drugs and natural products. Density-functional-theory studies were in good agreement with experimental results.
ORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Multidisciplinary
Luo Ge, Syuzanna R. Harutyunyan
Summary: Chiral bisphosphine ligands play a key role in transition-metal-catalyzed asymmetric synthesis. However, the commonly used transition metals are expensive and scarce, and the synthesis of chiral phosphine ligands is complex. In this study, a catalytic asymmetric hydrophosphination reaction using a chiral complex of earth-abundant manganese(i) was developed. This reaction provides a short and efficient synthetic route to access easily obtainable and structurally tunable chiral bisphosphines, which can be used in asymmetric catalysis with earth-abundant metal-based organometallic catalysts.
Article
Chemistry, Multidisciplinary
Wenjun Luo, Li-Ming Zhang, Zhan-Ming Zhang, Junliang Zhang
Summary: A novel family of PNP ligands (W-Phos) was designed and applied in the copper-catalyzed asymmetric addition of linear Grignard reagents to aryl alkyl ketones. This method allows for the facile synthesis of versatile chiral tertiary alcohols with high yields and excellent enantioselectivities. It also has the potential for the synthesis and modification of various densely functionalized medicinally relevant molecules.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Jingjing Li, Jianxun Ye, Jiayu Zhou, Jing Li, Delong Liu, Wanbin Zhang
Summary: The efficient RuPHOX-Ru catalyzed asymmetric hydrogenation of alpha-substituted tetralones via a dynamic kinetic resolution has been achieved for the synthesis of chiral tetrahydronaphthols. The mechanism study revealed that hydrogenation with H-2 gas is predominant in the reaction pathway compared to transfer hydrogenation with EtOH solvent as the hydrogen source.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Organic
Ying Ding, Jinguo Long, Feilong Sun, Xianjie Fang
Summary: A nickel-catalyzed isomerization/allylic cyanation of alkenyl alcohols is reported, providing a new complement to allylic substitution reactions. The use of a specific diphosphite ligand and methanol as the solvent is crucial for the success of this transformation, as demonstrated by a gram-scale regioconvergent experiment and formal synthesis of quebrachamine showcasing the high potential of this methodology.
Article
Chemistry, Applied
Jiayu Zhou, Jianxun Ye, Yang Zhang, Zhaodi Li, Jingjing Li, Delong Liu, Wanbin Zhang
Summary: The RuPHOX-Ru catalyzed asymmetric hydrogenation of diaryl ketones has been developed, yielding chiral diaryl methanols with up to 99% yield and 99% ee. This protocol can be performed on a gram-scale with low catalyst loading (2000 S/C) and the resulting products are valuable for various transformations, especially in the synthesis of chiral drugs like (S)-Orphenadrine and (S)-Neobenodine. Deuterium labeling and control experiments revealed that the RuPHOX-Ru-catalyzed asymmetric hydrogenation is exclusively driven by H-2 as the hydrogen source.
ADVANCED SYNTHESIS & CATALYSIS
(2023)
Article
Chemistry, Organic
Ali Wang, Mingduo Lu, Xin Xie, Yuanhong Liu
Summary: A straightforward synthesis of pyrimidines via Au(III) or Au(I)/Lewis-acid-catalyzed cascade reactions of propargylalcohols with 3-amino-benzo[d]isoxazoles is described. Highly selective 1,2-H or -R1 migrations are observed in most cases, and the migratory aptitude is dependent on the steric and electronic properties of the propargylic groups.
Article
Chemistry, Multidisciplinary
Xin Zheng, Xiaojing Liu, Lijie Liu, Xiaochuan Li, Song Jiang, Caoyuan Niu, Puhui Xie, Guoxing Liu, Zhanqi Cao, Yunlai Ren, Yuchen Qin, Jianji Wang
Summary: This study reports a fluorescent single crystal with optical plastic bending and fluorescence switching properties, attributed to extended pi-conjugation and molecular slippage. The crystal also exhibits high elasticity and reversible fluorescence switching triggered by various stimuli.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Xiaoxin Tian, Jikuan Qiu, Zhenzhen Wang, Yongkui Chen, Zhiyong Li, Huiyong Wang, Yuling Zhao, Jianji Wang
Summary: Efficient NH3 capture materials have been designed and synthesized by confining calcium chloride in a porous covalent organic framework, demonstrating high capture capacity and easy desorption, especially for low NH3 content absorption. The excellent performance is attributed to the highly dispersion of CaCl2 in the pores of the COF and coordinating interactions between NH3 and Ca2+ along with hydrogen bond interactions between NH3 and Cl-.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Jing Zhao, Yanzhuo Zhang, Hucheng Zhang, Haiyan Wang, Jianji Wang
Summary: This study demonstrates the importance of understanding the energetic characteristics of different hydrogen species in revealing catalytic reactivity and selectivity. Through the assistance of Ti, F, and C in MXenes, high capacity for spillover hydrogen storage can be achieved at ambient temperatures. The energetics perspectives provided in this study offer new insights into the catalytic mechanism in spillover-involving chemical procedures.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Xiaoyan Pei, Zhiyong Li, Huiyong Wang, Qiuju Zhou, Zuodong Liu, Jianji Wang
Summary: Surfactant-free microemulsions (SFMEs) based on ionic liquids (ILs) have shown great potential in various applications. In this study, a new kind of CO2-responsive SFME composed of quaternary ammonium IL, dimethyl sulfoxide, and ethyl acetate was developed. The microemulsion can be reversibly switched between emulsification and complete phase separation upon CO2 and N-2 bubbling. Mechanism studies confirmed that the reversible switching is due to the generation and restoration of more hydrophilic carbamate salts from the reaction of CO2 with IL anions. The CO2-switchable SFMEs were used as a microreactor for room temperature synthesis of Zn-based metal-organic frameworks, achieving successful reaction and microemulsion recycling.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Jing Zhao, Hucheng Zhang, Haiyan Wang, Jianji Wang
Summary: This study explores the relationship between Lewis acid and base strengths on Pd-CoOx interfaces and catalytic activity, showing that the introduction of Pd can enhance catalytic performance. The findings offer insights for rational design and synthesis of heterogeneous catalysts including CO2 hydrogenation.
MOLECULAR CATALYSIS
(2022)
Review
Chemistry, Multidisciplinary
Li Sun, Kelei Zhuo, Yujuan Chen, Quanzhou Du, Suojiang Zhang, Jianji Wang
Summary: This review introduces the use of ionic liquid (IL) electrolytes combined with redox active species to enhance the energy density of supercapacitors (SCs). The introduction of redox active species contributes to pseudocapacitance and various IL-REs and their energy storage mechanisms are discussed. Future research needs to address current challenges in order to advance this promising field.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Environmental
Haiyan Wang, Lijing Wang, Hucheng Zhang, Hao Jiang, Chunzhong Li, Jianji Wang
Summary: Sb-NC/PoMXene is synthesized by cross-linking Sb-NC and PoMXene through Ti-O-Sb bond, and it exhibits excellent properties including electronic conductivity, sulfur loading, polysulfide capture, and catalytic centers. These nanostructured hybrids provide fast ion transport and robust architecture, resulting in high capacity and long cyclability in lithium-sulfur batteries.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Songlin Wang, Nan Jiang, Yanyan Liu, Yan Hao, Qiying Zhang, Hongying Niu, Jianji Wang
Summary: In this study, Pb-Mg nanosheet catalysts with high activity, excellent stability, and recyclability were developed for solvent-free synthesis of MPC. The catalyst exhibited high DPC conversion and MPC selectivity, and could be easily separated and reused using simple centrifugation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Hua Li, Xiaodong Hu, Chunfeng Wang, Yujuan Chen, Kelei Zhuo, Jianji Wang
Summary: In this study, an IL-rGA material was prepared using hydrothermal reduction and modification tactics with the assistance of an ionic liquid. The IL-rGA material, with its porous texture and modified surface, enables rapid infiltration and sufficient adsorption of electrolyte ions, resulting in a significant improvement in specific capacitance. By using this material and a specific IL electrolyte, high energy density and power density supercapacitors can be achieved, meeting the requirements of a wider range of electrical facilities.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Peng Wang, Runyao Zhao, Fengtao Zhang, Jianji Wang, Buxing Han, Zhimin Liu
Summary: This study demonstrates the rational design and controllable fabrication of a metal oxide hybrid catalyst for electrochemical water splitting, showing excellent performance in hydrogen evolution reaction. The catalyst exhibited promising application potentials with its unique biphasic microstructures.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Xiaohui Li, Yingying Guo, Huiyong Wang, Zhiyong Li, Jianji Wang
Summary: The regulation of anionic structures on the formation of ionic liquid vesicles in aqueous solution was investigated. It was found that the synergistic effect of hydrophobic and pi-pi interaction played a vital role in the vesicle formation of a specific ionic liquid. The reversible structural transition between vesicle and micelle was also observed.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Multidisciplinary
Zhijun Guo, Guangyue Bai, Xize Zhan, Kelei Zhuo, Jianji Wang, Yujie Wang
Summary: A coassembly strategy for a supramolecular vector/drug was proposed, which uses biocompatible molecules to achieve pH-responsive and sustained release functions. The self-assembling behaviors of the components and the functions of the vector/drug were characterized. The results demonstrate that this coassembly method is a simple and effective approach.
Article
Nanoscience & Nanotechnology
Yuanchao Pei, Yaxin Zhang, Jie Ma, Maohong Fan, Suojiang Zhang, Jianji Wang
Summary: Ionic liquids have attracted significant interest in the field of science and technology, with early research focusing on their potential as green solvents. However, recent developments have shown that their designable structure and properties make them a versatile platform for advanced materials. This mini-review summarizes the applications of newly developed ionic liquids in perovskite solar cells, seawater desalination, nanoreactors, and advanced intelligent materials, and critically analyzes existing barriers and future trends. It aims to provide a useful guide for the design and understanding of advanced materials based on ionic liquids, and to inspire research and development in this field.
MATERIALS TODAY NANO
(2022)
Article
Chemistry, Physical
Yangshuo Li, Huiyong Wang, Bing Chang, Yingying Guo, Zhiyong Li, Shamraiz Hussain Talib, Zhansheng Lu, Jianji Wang
Summary: Through liquid-phase exfoliation in N-methylpyrrolidone (NMP) assisted via aliphatic amines as intercalators, bulk ZrS2 powder was successfully exfoliated into single and few-layer nanosheets. The exfoliation yield was 27.3%, with 77.1% of ZrS2 nanosheets being 2-3 layers. The ZrS2 nanosheets exhibited higher activity in electrocatalytic dinitrogen reduction compared to ZrS2 nanofibers and bulk ZrS2 powder, indicating the great potential of liquid phase exfoliation in mass production of high activity ZrS2 nanosheets.
GREEN ENERGY & ENVIRONMENT
(2023)
Article
Chemistry, Physical
Quanzhou Du, Yuhua Zhao, Yujuan Chen, Jianming Liu, Huanhuan Li, Guangyue Bai, Kelei Zhuo, Jianji Wang
Summary: Nitrogen-doped porous carbon nanosheets (NPCNs) with unique structure were studied for their potential application as anode and cathode material in potassium-ion hybrid capacitors (PIHCs). The structural changes of NPCNs during potassiation and depotassiation were analyzed using Raman spectroscopy and transmission electron microscopy. The PIHC device assembled with NPCNs exhibited a superior energy density of 128 Wh kg-1 and a capacity retention of 90.8% after 9000 cycles. This research contributes to the development of double-functional self-matching materials for high-performance hybrid energy storage devices.
GREEN ENERGY & ENVIRONMENT
(2023)
Article
Chemistry, Organic
Geeta Devi Yadav, Pooja Chaudhary, Balaram Pani, Surendra Singh
Summary: Chiral transition metal complexes with privileged ligands are efficient catalysts for various asymmetric organic transformations. Transition metal complexes of C1-symmetric pyrrolidine-based ligands have been widely used in asymmetric organic reactions. However, a comprehensive review article on the transition metal complexes of chiral C1-symmetric pyrrolidine-based ligands derived from (L)-proline has not been published.
TETRAHEDRON LETTERS
(2024)
