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Facile synthesis of isoindoline-1,3-diones by palladium-catalyzed carbonylative cyclization of

Mayur V. KHEDKAR, Bhalchandra M. BHANAGE

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 2,   Pages 226-232 doi: 10.1007/s11705-013-1321-x

Abstract: A facile method for the carbonylative cyclization of -bromobenzoic acid with primary amine using Pd(The effect of various reaction parameters such as ligand, solvent, base, time and temperature on this cyclizationalternative to the conventional multistep synthetic process and thus represents an effective utilization of carbonylative

Keywords： carbonylative cyclization reactions     isoindole-1     3-dinones     homogeneous catalysis     dppf    

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Sustainable functionalization and modification of materials via multicomponent reactions in water

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 9,   Pages 1318-1344 doi: 10.1007/s11705-022-2150-6

Abstract: Particularly, the combination of multicomponent reactions in water and aqueous media with materials chemistryMulticomponent reactions have received significant consideration from the community of material chemistryAlso, by rational design of multicomponent reactions in water and aqueous media, the performance of somemulticomponent reactions could be enhanced by the contributing “natural” form of water-soluble materialsThis critical review highlights the utility of various kinds of multicomponent reactions in water and

Keywords： materials     multicomponent reactions     modification     functionalization     water    

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Redox reactions of iron and manganese oxides in complex systems

Jianzhi Huang, Huichun Zhang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 5, doi: 10.1007/s11783-020-1255-8

Abstract: • Mechanisms of redox reactions of Fe- and Mn-oxides were discussed. • Oxidative reactions of Mn- andConspectus Redox reactions of Fe- and Mn-oxides play important roles in the fate and transformation

Keywords： Iron oxides     manganese oxides     reduction     oxidation     complex systems     reaction kinetics and mechanisms    

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Kinetic Monte Carlo simulations of plasma-surface reactions on heterogeneous surfaces

Daniil Marinov

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 815-822 doi: 10.1007/s11705-019-1837-9

Abstract: Reactions of atoms and molecules on chamber walls in contact with low temperature plasmas are important

Keywords： plasma-surface interaction     kinetic Monte Carlo     plasma nano technology    

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Numerical simulation and experimental verification of chemical reactions for SCR DeNO

Qiang ZHANG, Yonglin FAN, Wenyan LI

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 523-528 doi: 10.1007/s11705-010-0520-y

Abstract: There are a lot of complex chemical reactions in SCR reactors, and it is of great significance to understandthe internal process of chemical reactions for SCR DeNO and study the impact of various factors onresident time in the catalyst bed layer on NO removal efficiency were studied by simulation of chemical reactions

Keywords： SCR     NOx     removal efficiency     chemical reactions     simulation    

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Chemical reactions of oily sludge catalyzed by iron oxide under supercritical water gasification condition

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 886-896 doi: 10.1007/s11705-021-2125-z

Abstract: Supercritical water gasification is a promising technology in dealing with the degradation of hazardous waste, such as oily sludge, accompanied by the production of fuel gases. To evaluate the mechanism of Fe2O3 catalyst and the migration pathways of heteroatoms and to investigate the systems during the process, reactive force field molecular dynamics simulations are adopted. In terms of the catalytic mechanisms of Fe2O3, the surface lattice oxygen is consumed by small carbon fragments to produce CO and CO2, improving the catalytic performance of the cluster due to more unsaturated coordination Fe sites exposed. Lattice oxygen combines with •H radicals to form water molecules, improving the catalytic performance. Furthermore, the pathway of asphaltene degradation was revealed at an atomic level, as well as products. Moreover, the adsorption of hydroxyl radical on the S atom caused breakage of the two C–S bonds in turn, forming •HSO intermediate, so that the organic S element was fixed into the inorganic liquid phase. The heteroatom O was removed under the effects of supercritical water. Heavy metal particles presented in the oily sludge, such as iron in association with Fe2O3 catalyst, helped accelerate the degradation of asphaltenes.

Keywords： oily sludge     SCWG     ReaxFF     Fe2O3     heteroatoms    

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Solar fuel from photo-thermal catalytic reactions with spectrum-selectivity: a review

Sanli TANG, Jie SUN, Hui HONG, Qibin LIU

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 437-451 doi: 10.1007/s11708-017-0509-z

Abstract: from a technical perspective, a number of experimental or theoretical works are sorted by the chemical reactionsA discussion is finally presented concerning future development of photo-thermal catalytic reactions

Keywords： photo-thermal catalysis     spectrum-selectivity     solar fuel     full-spectrum    

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Reactivity of Pyrogenic Carbonaceous Matter (PCM) in mediating environmental reactions: Current knowledge

Wenqing Xu, Mark L. Segall, Zhao Li

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 5, doi: 10.1007/s11783-020-1265-6

Abstract: Abstract • Pyrogenic Carbonaceous Matter (PCM) promote both chemical and microbial synergies. • Discussion of PCM-enhanced abiotic transformation pathways of organic pollutants. • Conjugated microporous polymers (CMPs) can mimic the performance of PCM. • CMPs offer a platform that allows for systematic variation of individual properties. Pyrogenic Carbonaceous matter (PCM; e.g., black carbon, biochar, and activated carbon) are solid residues from incomplete combustion of fossil fuel or biomass. They are traditionally viewed as inert adsorbents for sequestering contaminants from the aqueous phase or providing surfaces for microbes to grow. In this account, we reviewed the recently discovered reactivity of PCM in promoting both chemical and microbial synergies that are important in pollutant transformation, biogeochemical processes of redox-active elements, and climate change mitigation with respect to the interaction between biochar and nitrous oxide (N2O). Moreover, we focused on our group’s work in the PCM-enhanced abiotic transformation of nitrogenous and halogenated pollutants and conducted in-depth analysis of the reaction pathways. To understand what properties of PCM confer its reactivity, our group pioneered the use of PCM-like polymers, namely conjugated microporous polymers (CMPs), to mimic the performance of PCM. This approach allows for the controlled incorporation of specific surface properties (e.g., quinones) into the polymer network during the polymer synthesis. As a result, the relationship between specific characteristics of PCM and its reactivity in facilitating the decay of a model pollutant was systematically studied in our group’s work. The findings summarized in this account help us to better understand an overlooked environmental process where PCM synergistically interacts with various environmental reagents such as hydrogen sulfide and water. Moreover, the knowledge gained in these studies could inform the design of a new generation of reactive carbonaceous materials with tailored properties that are highly efficient in contaminant removal.

Keywords： pyrogenic carbonaceous matter     Conjugated microporous polymer     remediation     Biochar     Hydrolysis     Pollutant degradation    

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Review of plasma-assisted reactions and potential applications for modification of metal–organic frameworks

Tingting Zhao, Niamat Ullah, Yajun Hui, Zhenhua Li

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 3,   Pages 444-457 doi: 10.1007/s11705-019-1811-6

Abstract: Some thermodynamically unfavorable reactions can easily occur with plasma assistance.In this review, we summarize the plasma-assisted reactions involved in dry reforming of methane, CO

Keywords： plasma catalysis     methane     carbon dioxide     VOCs     metal–organic frameworks    

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Easy access to pharmaceutically relevant heterocycles by catalytic reactions involving

Ximei Zhao, Matthias Rudolph, Abdullah M. Asiri, A. Stephen K. Hashmi

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 3,   Pages 317-349 doi: 10.1007/s11705-019-1874-4

Abstract: This review summarizes recent advances in the field of gold-catalyzed synthesis of pharmaceutically relevant aza-heterocycles via generated -imino gold carbene complexes as intermediates.

Keywords： gold     heterocycles     alkynes    

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Head-to-tail cyclization of a heptapeptide eliminates its cytotoxicity and significantly increases its

Shuai Ma, Huan Zhang, Xiaoyan Dong, Linling Yu, Jie Zheng, Yan Sun

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 2,   Pages 283-295 doi: 10.1007/s11705-017-1687-2

Abstract: Herein, we modified LK7 by a head-to-tail cyclization and obtained a cyclic LK7 (cLK7). cLK7 exhibitsThe findings indicate that the peptide cyclization is a promising approach to enhance the performance

Keywords： Alzheimer’s disease     amyloid β-protein     cyclic peptide     inhibition     protein aggregation    

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Catalyst particle shapes and pore structure engineering for hydrodesulfurization and hydrodenitrogenation reactions

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 897-908 doi: 10.1007/s11705-021-2127-x

Abstract: Catalyst particle shapes and pore structure engineering are crucial for alleviating internal diffusion limitations in the hydrodesulfurization (HDS)/hydrodenitrogenation (HDN) of gas oil. The effects of catalyst particle shapes (sphere, cylinder, trilobe, and tetralobe) and pore structures (pore diameter and porosity) on HDS/HDN performance at the particle scale are investigated via mathematical modeling. The relationship between particle shape and effectiveness factor is first established, and the specific surface areas of different catalyst particles show a positive correlation with the average HDS/HDN reaction rates. The catalyst particle shapes primarily alter the average HDS/HDN reaction rate to adjust the HDS/HDN effectiveness factor. An optimal average HDS/HDN reaction rate exists as the catalyst pore diameter and porosity increase, and this optimum value indicates a tradeoff between diffusion and reaction. In contrast to catalyst particle shapes, the catalyst pore diameter and the porosity of catalyst particles primarily alter the surface HDS/HDN reaction rate to adjust the HDS/HDN effectiveness factor. This study provides insights into the engineering of catalyst particle shapes and pore structures for improving HDS/HDN catalyst particle efficiency.

Keywords： hydrodesulfurization     hydrodenitrogenation     particle shape     pore structure    

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Kinetics and mechanisms of reactions for hydrated electron with chlorinated benzenes in aqueous solution

Haixia YUAN,Huxiang PAN,Jin SHI,Hongjing LI,Wenbo DONG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 4,   Pages 583-590 doi: 10.1007/s11783-014-0691-8

Abstract: The reactions between chlorinated benzenes (CBzs) and hydrated electron ( ) were investigated by theThe kinetics of the reactions was achieved with nanosecond LFP.

Keywords： chlorinated benzenes     hydrated electron     electron beam     laser flash photolysis    

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Hydroxyl radical-involved cancer therapy via Fenton reactions

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 3,   Pages 345-363 doi: 10.1007/s11705-021-2077-3

Abstract: The tumor microenvironment features over-expressed hydrogen peroxide (H2O2). Thus, versatile therapeutic strategies based on H2O2 as a reaction substrate to generate hydroxyl radical (•OH) have been used as a prospective therapeutic method to boost anticancer efficiency. However, the limited Fenton catalysts and insufficient endogenous H2O2 content in tumor sites greatly hinder •OH production, failing to achieve the desired therapeutic effect. Therefore, supplying Fenton catalysts and elevating H2O2 levels into cancer cells are effective strategies to improve •OH generation. These therapeutic strategies are systematically discussed in this review. Furthermore, the challenges and future developments of hydroxyl radical-involved cancer therapy are discussed to improve therapeutic efficacy.

Keywords： hydroxyl radical     Fenton catalyst     hydrogen peroxide     cancer therapy    

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Chemically triggered life control of “smart” hydrogels through click and declick reactions

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 9,   Pages 1399-1406 doi: 10.1007/s11705-022-2149-z

Abstract: The degradation of polymeric materials is recognized as one of the goals to be fulfilled for the sustainable economy. In this study, a novel methodology was presented to synthesize multiple highly cross-linked polymers (i.e., hydrogels) through amine–thiol scrambling under mild conditions. Amine-terminated poly(ethylene glycol) (PEG-NH2) was reacted with the representative conjugate acceptors to synthesize hydrogels in organic and aqueous solutions, respectively. The materials above exhibited high water-swelling properties, distributed porous structures, as well as prominent mechanical strengths. It is noteworthy that the mentioned hydrogels could be degraded efficiently in hours to release the original coupling partner, which were induced by ethylene diamine at ambient temperature through amine-amine metathesis. The recovered PEG-NH2 reagent could be employed again to regenerate hydrogels. Due to the multiple architectures and functions in polymeric synthesis, degradation and regeneration, a new generation of “smart” materials is revealed.

Keywords： hydrogels     degradation     synthesis     regeneration    

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Title Author Date Type Operation

Facile synthesis of isoindoline-1,3-diones by palladium-catalyzed carbonylative cyclization of

Mayur V. KHEDKAR, Bhalchandra M. BHANAGE

Journal Article

Sustainable functionalization and modification of materials via multicomponent reactions in water

Journal Article

Redox reactions of iron and manganese oxides in complex systems

Jianzhi Huang, Huichun Zhang

Journal Article

Kinetic Monte Carlo simulations of plasma-surface reactions on heterogeneous surfaces

Daniil Marinov

Journal Article

Numerical simulation and experimental verification of chemical reactions for SCR DeNO

Qiang ZHANG, Yonglin FAN, Wenyan LI

Journal Article

Chemical reactions of oily sludge catalyzed by iron oxide under supercritical water gasification condition

Journal Article

Solar fuel from photo-thermal catalytic reactions with spectrum-selectivity: a review

Sanli TANG, Jie SUN, Hui HONG, Qibin LIU

Journal Article

Reactivity of Pyrogenic Carbonaceous Matter (PCM) in mediating environmental reactions: Current knowledge

Wenqing Xu, Mark L. Segall, Zhao Li

Journal Article

Review of plasma-assisted reactions and potential applications for modification of metal–organic frameworks

Tingting Zhao, Niamat Ullah, Yajun Hui, Zhenhua Li

Journal Article

Easy access to pharmaceutically relevant heterocycles by catalytic reactions involving

Ximei Zhao, Matthias Rudolph, Abdullah M. Asiri, A. Stephen K. Hashmi

Journal Article

Head-to-tail cyclization of a heptapeptide eliminates its cytotoxicity and significantly increases its

Shuai Ma, Huan Zhang, Xiaoyan Dong, Linling Yu, Jie Zheng, Yan Sun

Journal Article

Catalyst particle shapes and pore structure engineering for hydrodesulfurization and hydrodenitrogenation reactions

Journal Article

Kinetics and mechanisms of reactions for hydrated electron with chlorinated benzenes in aqueous solution

Haixia YUAN,Huxiang PAN,Jin SHI,Hongjing LI,Wenbo DONG

Journal Article

Hydroxyl radical-involved cancer therapy via Fenton reactions

Journal Article

Chemically triggered life control of “smart” hydrogels through click and declick reactions

Journal Article