Article
Chemistry, Physical
Yo-hei Nagasaki, Masazumi Tamura, Mizuho Yabushita, Yoshinao Nakagawa, Keiichi Tomishige
Summary: The silica-supported molybdenum oxide catalyst showed high efficiency and reusability in the dehydration of various amides. The results of catalyst characterizations and activity tests revealed that the strong acid sites formed by the interaction between silanol groups and molybdenum oxide species, along with the acid-base pair sites, played a crucial role in the dehydration reaction.
Article
Chemistry, Physical
Zhongmiao Chen, Wei Chen, Lei Zhang, Wenqian Fu, Guoren Cai, Anmin Zheng, Tiandi Tang
Summary: The acidic mesoporous ZSM-5 assembled palladium (Pd/ZSM-5-H) can efficiently convert primary amides to nitriles without the need for any additives, offering excellent applicability. The highly dispersive Pd(II) species grafted on ZSM-5-H via strong binding interaction drive significantly higher reaction activity compared to other catalysts. The active centers of Pd/ZSM-5-H were attributed to [PdOH]+, which catalyzes the conversion of primary amides to nitriles with high thermodynamic and kinetic favorability.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Jing Qi, Xiyan Wang, Gan Wang, Srinivas Reddy Dubbaka, Patrick ONeill, Hwee Ting Ang, Jie Wu
Summary: This study presents a green and environmentally friendly approach for the synthesis of imides using electrocatalytic oxidation with H2O as the oxygen source. The method eliminates the need for toxic or expensive oxidants and achieves high yields under mild reaction conditions. It shows broad substrate compatibility and potential for industrial applications.
Article
Chemistry, Multidisciplinary
Li Liu, Yingdong Zhou, Lixian Guo, Guiying Li, Changwei Hu
Summary: A method for producing nitrogen-containing compounds from natural microalgae was developed and the effects of different conditions on the yield were studied. Addition of ZrO2 resulted in an increase in the yields of fatty amides and nitriles, while the total yield of fatty acids decreased.
Article
Chemistry, Multidisciplinary
Lan Wu, Yang Liu, Zhenhua Li, Jinhua Liang, Lei Geng, Li Chen, Zhengping Dong
Summary: This article presents the synthesis of a supported nano-catalyst, FeA-NC, with excellent mesoporous structure and evenly distributed iron. The catalyst support contains abundant nitrogen atoms, providing sufficient anchoring points for iron and forming Fe-Nx groups, thus enhancing the catalytic activity. Additionally, the porous structure of FeA-NC improves the mass transfer of reactants and enhances reaction efficiency.
Article
Chemistry, Multidisciplinary
Kalina Grzelak, Maciej Trejda, Anders Riisager
Summary: Copper-containing materials based on Ce- and Ca-Nb-mesocellular foam silica supports were prepared and applied as catalysts for the gas-phase reductive condensation of acetone. The properties of these materials, the interaction of metal species, and their role in the catalytic process were investigated. The results showed that the Cu/Ce-MCF catalyst exhibited high acetone conversion and MIBK selectivity at 250°C, indicating a synergistic effect of Cu2+, Cu-0, and CeO2 species.
Article
Chemistry, Multidisciplinary
Qiao Chu, Zhaoyue Feng, Sumin Zhang, Ping Liu, Peipei Sun
Summary: An electrochemical three-component reaction cascade Mumm rearrangement was developed for the synthesis of imides. Commercially available aryl acids, nitriles, and alkylbenzenes were used as substrates without pre-functionalization, and the reactions were conducted under transition metal- and chemical oxidant-free conditions. Subsequent hydrolysis or reduction of the imide products could be easily achieved to synthesize amides, as well as primary or tertiary amines.
Article
Energy & Fuels
Kaifeng Lu, Yifan Wang, Caidi Jin, Robert Liao, Weihong Tan, Jun Ye, Lingjun Zhu, Shurong Wang
Summary: This study introduces a novel approach on developing efficient and recyclable catalyst for biorefining. By loading tungstophosphoric acid on a titania support, a catalyst with advantages in acidity flexibility and catalytic stability was obtained for the dehydration of xylose to furfural. Through optimization of reaction conditions, high conversion and yield were achieved, and the catalyst remained effective after multiple recycling. The reaction kinetics revealed the factors affecting the furfural yield.
Article
Chemistry, Multidisciplinary
Decai Huang, Hao Sun, Jingwen Li, Junhao Zheng, Darun Yang, Guozhu Chen, Daowei Gao, Huaiqing Zhao
Summary: The heterogeneous BPDC-RuO2-CeO2 catalyst derived from Ce-BPDC MOFs can efficiently catalyze the oxidation of amines under mild conditions, and it can be recycled for up to six times without significant loss of catalytic activity.
Article
Energy & Fuels
Mengmeng Yuan, Haitao Yuan, Suhang Xun, Rongmin Le, Yan Huang, Minqiang He, Linhua Zhu, Wenshuai Zhu, Huaming Li
Summary: A three-dimensional material VO2/3D g-C3N4 with a porous structure was prepared by calcination and hydrothermal reduction method. Loading VO2 improved catalytic activity and prevented agglomeration. Experimental results showed that 10% VO2/3D g-C3N4 had high desulfurization efficiency and achieved deep desulfurization under milder conditions.
Review
Chemistry, Organic
Muthupandian Ganesan
Summary: In recent years, reductive dehydration of primary nitro compounds has shown to be an attractive method for the direct synthesis of nitriles. This review focused on the uncatalyzed and catalyzed reductive dehydration of nitro compounds, highlighting metal and non-metal catalyzed dehydration, as well as the use of radical chemistry in accessing nitriles.
CURRENT ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Juan Garces, Ramon Arrue, Nestor Novoa, Andreia F. Peixoto, Ricardo J. Chimentao
Summary: Copper nanoparticles and ZrO2-supported copper NPs were synthesized with different pH values and evaluated for glycerol dehydration reaction. The pH of the synthesis affected the distribution of copper nanoparticles and the performance of the catalysts on ZrO2 support.
Article
Chemistry, Multidisciplinary
Ziyan Wang, Shuo Guo, Zhimiao Wang, Fang Li, Wei Xue, Yanji Wang
Summary: The rod-like CeO2-supported Pd catalyst prepared by two-step hydrothermal impregnation showed good catalytic performance in the oxidative carbonylation of glycerol. However, the catalyst gradually deactivated due to Pd leaching and particle growth during reuse.
Article
Chemistry, Inorganic & Nuclear
Jayeeta Bhattacharjee, Parveen Rawal, Suman Das, Adimulam Harinath, Puneet Gupta, Tarun K. Panda
Summary: In this paper, the synthesis of titanium catalysts through salt metathesis reaction is reported, and the detailed steps of a series of reactions are described. The study found that the titanium catalyst exhibited good selective catalytic activity towards ester functionalities under solvent-free conditions, and the key steps of the reaction mechanism were revealed through DFT studies.
DALTON TRANSACTIONS
(2022)
Article
Multidisciplinary Sciences
Majid D. Farahani, Cheslin Moodley, Abdul S. Mahomed, Holger B. Friedrich
Summary: In this study, a Pt-V/CeO2 catalyst was developed for amide hydrogenation under mild conditions. It was found that oxygen vacancies on the ceria surface play a crucial role in the catalytic activity, with the absence of oxygen vacancies enhancing the hydrogenation ability of Pt sites and promoting the in situ formation of oxophilic V3+.
Article
Chemistry, Physical
Sho Yamaguchi, Hiroki Kondo, Kohei Uesugi, Katsumasa Sakoda, Koichiro Jitsukawa, Takato Mitsudome, Tomoo Mizugaki
Summary: The study established a highly efficient catalytic system for converting biomass-derived alcohols into hydrocarbon fuels without the need for hydrogen gas. By using Pd/CeO2 catalyst, a wide range of alcohols were successfully converted into shorter carbon chain hydrocarbons with high yields. The catalyst was easily recoverable and reusable, making it a simple and sustainable method for producing hydrocarbon fuels from biomass-derived oxygenates.
Article
Chemistry, Multidisciplinary
Shu Fujita, Sho Yamaguchi, Jun Yamasaki, Kiyotaka Nakajima, Seiji Yamazoe, Tomoo Mizugaki, Takato Mitsudome
Summary: Alloying non-noble metal nanoparticles with phosphorus is a promising strategy for developing smart catalysts with high activity and air stability. For example, the novel nano-Ni2P catalyst exhibits excellent hydrogenation performance in water and can be easily reused without pretreatment.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Physical
Hiroya Ishikawa, Min Sheng, Ayako Nakata, Kiyotaka Nakajima, Seiji Yamazoe, Jun Yamasaki, Sho Yamaguchi, Tomoo Mizugaki, Takato Mitsudome
Summary: In this study, a supported cobalt phosphide nanoalloy catalyst was developed for the selective hydrogenation of furfural derivatives, showing high efficiency and air stability without the need for H-2 pretreatment. Backdonation from Co d-electrons to the pi* orbital of furfural derivatives was found to play a key role in the highly efficient hydrogenation process.
Article
Chemistry, Multidisciplinary
Sho Yamaguchi, Shu Fujita, Kiyotaka Nakajima, Seiji Yamazoe, Jun Yamasaki, Tomoo Mizugaki, Takato Mitsudome
Summary: A nickel phosphide nanoalloy supported by hydrotalcite demonstrated high catalytic activity for the hydrogenation of maltose, leading to efficient production of maltitol. Cooperative catalysis by the nanoalloy and the support played a key role in this process, enabling high-yield production even at ambient temperature. The catalyst showed promising performance in concentrated maltose solutions, highlighting its potential for sustainable production of maltitol.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Inorganic & Nuclear
Sho Yamaguchi, Tomoo Mizugaki, Takato Mitsudome
Summary: The highly efficient and selective hydrogenation of D-xylose to D-xylitol was achieved using a hydrotalcite-supported nickel phosphide nanoparticle catalyst. Notably, the reaction proceeded even under 1 bar of H-2 or at room temperature for the first time. The catalyst exhibited the highest activity among previously reported non-noble metal catalysts, with potential for industrial production of D-xylitol.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Organic
Hang Xu, Sho Yamaguchi, Takato Mitsudome, Tomoo Mizugaki
Summary: In this study, the catalytic oxidative trimerization and oxygenative cleavage reactions of indoles were achieved using a copper nitride nanocube catalyst, producing valuable nitrogen-containing compounds such as indolin-3-ones and 2-ketoanilides under additive-free conditions.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Organic
Hang Xu, Sho Yamaguchi, Takato Mitsudome, Tomoo Mizugaki
Summary: A simple and efficient hydroboration of alkynes using Cu3N NC catalyst has been reported for the first time. The catalyst allows the synthesis of vinyl boronate esters under mild reaction conditions without the need for additives or elevated temperatures. The Cu3N NCs can also be easily separated and reused, offering an environmentally friendly route for the production of vinyl boronates.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2023)
Article
Chemistry, Physical
Hiroya Ishikawa, Naoki Nakatani, Sho Yamaguchi, Tomoo Mizugaki, Takato Mitsudome
Summary: We report the use of ruthenium phosphide nanoparticles (Ru2P/SiO2) as a highly active and robust catalyst for the hydrogenation of sulfur-containing nitroarenes, with activity 34 times higher than that obtained with Ru nanoparticles. Various sulfur-containing nitroarenes were hydrogenated under 1 bar of H2, resulting in high yields of anilines, including important pharmaceutical intermediates. The electronic and geometrical effects of P surrounding Ru species in Ru2P/SiO2 were found to be crucial for enhancing the catalyst's activity and durability against sulfur poisoning.
Article
Multidisciplinary Sciences
Tomohiro Tsuda, Min Sheng, Hiroya Ishikawa, Seiji Yamazoe, Jun Yamasaki, Motoaki Hirayama, Sho Yamaguchi, Tomoo Mizugaki, Takato Mitsudome
Summary: Iron-based catalysts are advantageous metal catalysts due to their abundance and low toxicity. However, conventional iron nanoparticle catalysts have low activity in liquid-phase reactions and lack air stability. In this study, air-stable iron phosphide nanocrystal catalysts were developed to overcome the trade-off between activity and stability. These catalysts exhibited high activity for liquid-phase nitrile hydrogenation and can be immobilized on suitable supports for improved performance.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Hiroya Ishikawa, Naoki Nakatani, Sho Yamaguchi, Tomoo Mizugaki, Takato Mitsudome
Summary: We report the use of ruthenium phosphide nanoparticles (Ru2P/SiO2) as a highly active and robust catalyst for the hydrogenation of sulfur-containing nitroarenes, showing 34 times higher activity than Ru nanoparticles. Various sulfur-containing nitroarenes were successfully hydrogenated under 1 bar of H2, leading to high yields of aniline products, including valuable pharmaceutical intermediates. The study highlights the importance of the electronic and geometrical effects of P surrounding Ru species in Ru2P/SiO2 for enhanced activity and durability against sulfur poisoning.
Article
Chemistry, Physical
Saburo Hosokawa, Noriyuki Fukuzumi, Tetsu Nakatani, Tetsuo Honma, Tomoo Mizugaki, Tsunehiro Tanaka, Kenji Wada
Summary: The study demonstrates the selective synthesis of acetaldehyde by hydrogenation of acetic acid catalyzed by Pd-Fe alloy nanoparticles derived from Pd/Fe2O3. The optimal Pd loading amount (28-44 wt%) prevents the formation of iron carbides and leads to excellent acetaldehyde yield. In situ XAFS measurements show the reductive pretreatment of Pd/Fe2O3 forms core-shell type Pd-Fe alloy nanoparticles.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Katsumasa Sakoda, Sho Yamaguchi, Takato Mitsudome, Tomoo Mizugaki
Summary: A heterogeneous catalytic system Pt-Mo/ZrO2 was developed for the selective hydrodeoxygenation (HDO) of esters to synthesize unsymmetrical ethers. Under mild reaction conditions, a wide range of esters could be transformed into the corresponding unsymmetrical ethers. The Pt-Mo/ZrO2 catalyst also demonstrated successful conversion of a biomass-derived triglyceride into the corresponding triether. The cooperative catalysis between Pt nanoparticles and neighboring molybdenum oxide species on the ZrO2 surface played a key role in the highly selective HDO of esters. This catalyst system offers an efficient strategy for synthesizing unsymmetrical ethers and expands the scope of sustainable reaction processes.
Article
Chemistry, Multidisciplinary
Hiroya Ishikawa, Sho Yamaguchi, Ayako Nakata, Kiyotaka Nakajima, Seiji Yamazoe, Jun Yamasaki, Tomoo Mizugaki, Takato Mitsudome
Summary: This study demonstrates that phosphorus alloying significantly increases the deoxygenation activity of precious metal nanoparticles for sulfoxide conversion, and provides an efficient method to improve metal nanoparticle catalysis for diverse organic synthesis.
Article
Chemistry, Multidisciplinary
Min Sheng, Shu Fujita, Sho Yamaguchi, Jun Yamasaki, Kiyotaka Nakajima, Seiji Yamazoe, Tomoo Mizugaki, Takato Mitsudome
Summary: The study reported the successful synthesis of single-crystal cobalt phosphide nanorods containing coordinatively unsaturated Co-Co active sites, which serve as a new class of air-stable, highly active, and reusable heterogeneous catalysts for the reductive amination of carbonyl compounds. The air stability and high activity of the Co2P NRs is noteworthy, as conventional Co catalysts are air-sensitive and show no activity for this transformation under mild conditions. P-alloying is therefore of considerable importance for nanoengineering air-stable and highly active non-noble-metal catalysts for organic synthesis.
Article
Chemistry, Organic
Hang Xu, Sho Yamaguchi, Takato Mitsudome, Tomoo Mizugaki
Summary: Copper nitride nanoparticles act as efficient catalysts for hydroxylation reactions of aryl halides under ligand-free conditions, with the nitrogen atoms functioning as ligands to promote the reaction. The catalytic activity of Cu3N is comparable to conventional Cu catalysts with nitrogen ligands.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2021)
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)
