Article
Chemistry, Physical
Takumi Koshikawa, Juntaro Nogami, Yuki Nagashima, Ken Tanaka
Summary: This paper reports the application of Pt(II) and Au(I) catalysts in inter- and intramolecular cascade [4+2] annulation reactions, as well as the mechanistic study of the reaction products. In the Pt(II)-catalyzed reaction, annulation occurs between two alkenes via two benzopyrylium intermediates. In the Au(I)-catalyzed reaction, annulation takes place between one alkene and benzopyrylium and quinodimethane intermediates. In addition, the Au(I)-catalyzed reaction of indole-yne-carbonyls with one alkene proceeds through benzopyrylium rather than quinodimethane or carbocation intermediates, as supported by DFT calculations.
Article
Chemistry, Inorganic & Nuclear
Marina Perez-Jimenez, Jesus Campos, Jesus Jover, Santiago Alvarez, Ernesto Carmona
Summary: In this study, the coordination of E-C bonds (E = Zn, Mg, Al) to the Mo atoms of dimolybdenum complexes and the formation of dimolybdenum compounds through reactions with zincocenes were explored. The bonding mechanism of the reported H-Mo strictly equivalent to Mo-E-R rings was revealed through DFT calculations and NBO analysis.
Article
Chemistry, Multidisciplinary
Shengjie Jiang, Yanping Cai, Ambre Carpentier, Iker del Rosal, Laurent Maron, Xin Xu
Summary: This work reports the first catalyzed synthesis of d-block metal-metal bonded complexes. The treatment of terminal zinc hydrides in the presence of 5 mol% Ni(CO)(2)(PPh3)(2) afforded Zn(i)-Zn(i) bonded compounds in high isolated yields with concomitant elimination of dihydrogen. Stoichiometric reactions, kinetic studies and DFT calculations were conducted to elucidate the reaction mechanism.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Pornthip Wimonsong
Summary: The hybrid catalyst of Zn-HT/TAC synthesized by the incipient impregnation method showed higher efficiency in hydrogen production during fermentation, with a 26.62% increase compared to the control group. The performance of the resulting hybrid catalyst is attributed to the cooperative effects of the base property of Zn-HT and selective adsorption of TAC.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Chanhyun Jung, Siyuan Li, Kwanghee Lee, Mayavan Viji, Heesoon Lee, Soonsil Hyun, Kiho Lee, Young Kee Kang, Chhabi Lal Chaudhary, Jae-Kyung Jung
Summary: In this study, solvent-directed intramolecular hydrofunctionalization of readily available o-alkynoylphenols was successfully achieved under reagent-free conditions. The strategy is remarkable for its regioselectivity, atom economy, and efficiency in terms of atom, carbon, and reaction mass.
Article
Chemistry, Organic
Zhuo Chen, Xiao-Di Nie, Jian-Ting Sun, Ai-Mei Yang, Bang-Guo Wei
Summary: The Zn(OTf)(2)-catalyzed hydroamination of ynamides with aromatic amines has been developed, allowing for the synthesis of various substituted amidine compounds with moderate to excellent yields and high regioselectivities.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Ankur Kanti Guha
Summary: Quantum chemical calculations indicate that ethyne (C2H2) is an effective fragment for forming strong Be-Be and Zn-Zn interactions. The complexes formed are thermodynamically stable, with Be-2 and Zn-2 fragments acting as electron donors to the C2H2 fragment, resulting in Be-2(& delta;+) and Zn-2(& delta;+) states. The introduction of the electronegative F atom in C2F2 leads to shorter Be-Be and Zn-Zn distances. Bonding analyses show that these complexes exhibit delocalized & pi; bonding, leading to aromaticity.
Article
Engineering, Environmental
Jui-En Tsai, Wei-Xiang Hong, Hamed Pourzolfaghar, Wei-Hsuan Wang, Yuan-Yao Li
Summary: By anchoring a Fe-Ni-Zn triple single-atom catalyst (SAC) in a nitrogen-doped porous carbon framework, the catalytic performance and battery performance of the rechargeable Zn-air battery (ZAB) can be significantly improved.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Shuilian Xu, Shengjie Jiang, Xin Xu
Summary: This work demonstrates the selective reduction capabilities of a Zn(I) Zn(I)-bonded compound towards various small molecules. The reaction of this compound with white phosphorus yielded a trimetallic cluster containing a zinc-coordinated Zintl ion. Furthermore, the compound also selectively reduced 1-azidoadamantane and diphenyl disulfide to produce specific Zn(II) and thiolate derivatives, respectively. Notably, the compound remained intact during the oxidation reaction with elemental sulfur, with only the pendant phosphine of the ligand backbone being oxidized.
Article
Chemistry, Multidisciplinary
Shohei Yoshioka, Tsunayoshi Takehara, Takeyuki Suzuki, Mitsuhiro Arisawa
Summary: This paper presents the first report on the intramolecular [2+2] cycloaddition of vinylsilane. Previous studies have focused on controlling regioselectivity in the [2+2] cycloaddition of allenes by changing the substrate, but no research has attempted to achieve this solely by altering the reaction conditions. In this study, we successfully controlled the intramolecular [2+2] cycloaddition at proximal and distal positions of allenes by modifying the reaction conditions.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Itay Raz, Roman Dobrovetsky
Summary: The synthesis of a dicationic Zn+2-based complex with a tripodal tris(2-pyridylmethyl)amine (TPA) ligand is reported, which serves as a highly chemoselective catalyst for hydrosilylation reactions of alkynes. Unlike typical Zn-catalyzed hydrosilylation reactions, this system activates C equivalent to C triple bonds instead of Si-H bonds, which explains its high chemoselectivity.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Vladyslav V. Shcherban, Olena O. Kuleshova, Tetiana Ye. Keda, Olga V. Khilya, Emmanuel Gras, Yulian M. Volovenko
Summary: A new one-pot synthesis method for Zn2+-sensitive probes has been developed, using a combination of in situ formation of imidoylchloride and condensation reactions. The obtained compounds were characterized using various spectroscopy techniques. Two model ligands showed promising sensitivity and selectivity for Zn2+ detection, with stability constants indicating the formation of moderately stable complexes.
Article
Chemistry, Multidisciplinary
Li Zhang, Ziqiang Liu, Gaowei Wang, Jianze Feng, Quanhu Ma
Summary: A new type of hybrid electrolyte has been developed to address the challenges faced by aqueous Zn-ion hybrid capacitors, demonstrating excellent performance and promoting the development of this technology.
Article
Chemistry, Organic
Saho Uenishi, Rina Kakigi, Kumiko Hideshima, Akari Miyawaki, Junpei Matsuoka, Tokutaro Ogata, Kiyoshi Tomioka, Yasutomo Yamamoto
Summary: Asymmetric total synthesis of (-)-javaberine A and its epimer was successfully achieved using two methods, including asymmetric hydroamination of N-methyl-2-(2-styrylaryl)ethylamine and Bischler-Napieralski cyclization. The target compounds were obtained through multi-step reactions, providing the antipode and C14-epimer of natural javaberine A.
Article
Chemistry, Multidisciplinary
Neil R. R. Judge, Eva Hevia
Summary: By adding two molar equivalents of KOtBu to Zn(TMP)(2) (TMP=2,2,6,6-tetramethylpiperidide), the mild zinc bis-amide base is transformed into a powerful metalating agent capable of regioselective zincation of sensitive fluoroarenes. The intermediates formed during Zn-H exchange are structurally verified, showing the activation of TMP groups to generate higher order bis-aryl potassium zincates. This bimetallic KOtBu/Zn(TMP)(2) partnership exhibits the ability to zincate toluene and benzene at room temperature.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Applied
Souvik Pal, Sudip Maiti, Hari Pada Nayek
APPLIED ORGANOMETALLIC CHEMISTRY
(2018)
Article
Chemistry, Inorganic & Nuclear
Jayeeta Bhattacharjee, Adimulam Harinath, Indrani Banerjee, Hari Pada Nayek, Tarun K. Panda
INORGANIC CHEMISTRY
(2018)
Article
Chemistry, Multidisciplinary
Arijit Sarkar, Carlos J. Gomez-Garcia, Samia Benmansour, Hari Pada Nayek
Article
Chemistry, Multidisciplinary
Arijit Sarkar, Pinku Prasad Mondal, Hari Pada Nayek
Article
Chemistry, Applied
Arijit Sarkar, Sourav Jana, Hari Pada Nayek
Summary: A new tridentate ligand was prepared and reacted with Er(NO3)(3)·5H(2)O to form a pentanuclear coordination cluster, which was utilized as a catalyst for the selective synthesis of 1,2-disubstituted benzimidazole derivatives with yields ranging from 66% to 91%. This study demonstrates the first-ever approach to employ a homo- and pentanuclear lanthanide coordination cluster for catalyzing the synthesis of 1,2-disubstituted benzimidazoles.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Ravi Kumar, Parveen Rawal, Indrani Banerjee, Hari Pada Nayek, Puneet Gupta, Tarun K. Panda
Summary: This study reports the solvent-free and ambient temperature chemoselective hydroboration of aldehydes and ketones using platinum complexes. The corresponding boronate esters were obtained in high yield. The platinum complexes also proved to be effective catalysts in the reductive amination reaction, showing excellent functional group tolerance.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Arijit Sarkar, Debayan Basu, Carlos J. Gomez-Garcia, Hari Pada Nayek
Summary: Two tetranuclear Ni(II) complexes with highly symmetric and asymmetric [Ni4O4] cubane cores have been prepared and characterized. Magnetic studies reveal ferromagnetic exchange interactions between the Ni(II) ions within the cubane core, along with large anisotropy and high ground spin state.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Organic
Adimulam Harinath, Himadri Karmakar, Devadkar Ajitaro Kisan, Hari Pada Nayek, Tarun K. Panda
Summary: An N-heterocyclic carbene-zinc alkyl complex acts as a catalyst for the cross-dehydrogenative coupling of amines and hydrosilanes, yielding aminosilanes at room temperature with good chemoselectivity. The zinc-catalyzed reaction showed a broad substrate scope. The mechanism of the cross-dehydrogenative coupling reaction was determined by isolating and characterizing two zinc complexes as intermediates.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Debayan Basu, Hari Pada Nayek
Summary: Complex 1, bis(catecholato)germane, was synthesized and found to be an efficient Lewis acid catalyst in the Friedel-Crafts alkylation reaction. The product yields for bis(indolyl)alkanes and nitroalkylated indoles were up to 95% and 96%, respectively, confirming the catalytic efficacy of complex 1. Experimental findings proposed a plausible mechanism for both reactions.
DALTON TRANSACTIONS
(2022)
Article
Biochemistry & Molecular Biology
Surajit Mondal, Niladri Patra, Hari Pada Nayek, Sumit K. Hira, Soumit Chatterjee, Swapan Dey
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2020)
Article
Chemistry, Multidisciplinary
Kulsum Bano, Srinivas Anga, Archana Jain, Hari Pada Nayek, Tarun K. Panda
NEW JOURNAL OF CHEMISTRY
(2020)
Article
Chemistry, Multidisciplinary
Richa Vinayak, Hari Pada Nayek
NEW JOURNAL OF CHEMISTRY
(2019)
Article
Chemistry, Multidisciplinary
Richa Vinayak, Hari Pada Nayek
NEW JOURNAL OF CHEMISTRY
(2019)
Article
Chemistry, Multidisciplinary
Souvik Pal, Kartick Dey, Samia Benmansour, Carlos J. Gomez-Garcia, Hari Pada Nayek
NEW JOURNAL OF CHEMISTRY
(2019)
Article
Chemistry, Applied
Richa Vinayak, Dhritiman Dey, Dipanjan Ghosh, Dhrubajyoti Chattopadhyay, Abhrajyoti Ghosh, Hari Pada Nayek
APPLIED ORGANOMETALLIC CHEMISTRY
(2018)
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)
