Article
Chemistry, Multidisciplinary
Lachlan Sharp-Bucknall, Tania, Jason L. Dutton
Summary: This article describes the synthesis and structural characterization of NO2-PhI(OTf)(2), a compound that is resistant to decomposition and has higher reactivity than previously misidentified PhI(OTf)(OAc), confirming the non-existence of PhI(OTf)(2) as an intermediate in oxidation reactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Ngoc Minh Tran, Thang Cao Doan, Hyojong Yoo
Summary: We report a facile method for preparing high specific surface area hollow fibrous nanosilica with fiber-like mesoporous structures and large pore channels, which can serve as a robust support for catalytic reactions.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Diego Garay-Ruiz, Cristiano Zonta, Silvia Lovat, Joan Gonzalez-Fabra, Carles Bo, Giulia Licini
Summary: This study reveals the catalytic pathway and influencing factors of sulfide oxidation through experimental and theoretical investigations. The steric effects of sulfides, ligands, and oxidants are crucial for the formation of different intermediates and reaction pathways.
INORGANIC CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
Xiu Lin, Shi-Nan Zhang, Dong Xu, Jun-Jun Zhang, Yun-Xiao Lin, Guang-Yao Zhai, Hui Su, Zhong-Hua Xue, Xi Liu, Markus Antonietti, Jie-Sheng Chen, Xin-Hao Li
Summary: The research utilizes electron-deficient W2C nanocrystal-based electrodes to enhance the activation of C-H bonds, achieving high turnover frequency and relatively low working potential. The electrocatalytic strategy enables efficient deprotonation processes and boosts hydrogen production, meeting the requirements of sustainable chemical synthesis.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Chawki Awada, Nagih M. Shaalan, Chahinez Dab, Francesco Ruffino
Summary: This study reports for the first time a steady-state detection method using surface-enhanced Raman spectroscopy (SERS) to detect 50 ppm nitrogen dioxide (NO2) gas in a polyethylene (PET) bag. SERS was performed on different shapes of gold nanostructures, gold nanostars (GNS) and nanoporous gold film (NPG), and successfully detected the vibrational modes related to the adsorbents of NO2 molecules. The mechanism of NO2 photochemical reactions is also explained.
APPLIED SURFACE SCIENCE
(2022)
Article
Forestry
Estefania Isaza Ferro, Jordan Perrin, Owain George John Dawson, Tapani Vuorinen
Summary: The study analyzed the possibility of increasing the speed of the reaction between hypochlorous acid and chlorite ions by adding tertiary amine catalysts in the system. It found that CEM-DABCO was a highly stable catalyst that significantly increased the reaction speed, leading to faster regeneration of chlorine dioxide and improved efficiency in chlorine dioxide treatments.
WOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Organic
Cunbo Wei, Jiawen Wu, Lizhu Zhang, Zhonghua Xia
Summary: A highly selective synthesis of Z-alkenyl indoles was developed by adding indoles to haloalkynes using a gold catalyst and a cocatalyst, resulting in high yields at room temperature.
Article
Chemistry, Organic
Zhihao Zhang, Xin Zou, Zhenjiang Li, Yu Gao, Yuanyuan Qu, Yusheng Quan, Yi Zhou, Jinlan Li, Jie Sun, Kai Guo
Summary: The cross-coupling of cycloketone oxime esters with aldehydes catalyzed by N-heterocyclic carbenes via a radical pathway offers a modular and efficient method with easy operation and broad functional group compatibility. This method is showcased by late-stage modification of complicated aldehydes derived from medical intermediate pregnenolone and natural product diacetone-D-glucose.
ORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Multidisciplinary
Penglei Zhang, Peng He, Yifeng Zhao, Siwei Yang, Qingkai Yu, Xiaoming Xie, Guqiao Ding
Summary: This study proposes an efficient strategy for the fabrication of ultra-large graphene oxide (ULGO) with high-yield preparation and remarkable electrical conductivity and mechanical properties. Additionally, the potential application of ULGO in constructing graphene films with high thermal conductivity is demonstrated.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Marte Sofie Martinsen Holmsen, Charlie Blons, Abderrahmane Amgoune, Matthieu Regnacq, Denis Lesage, E. Daiann Sosa Carrizo, Pierre Lavedan, Yves Gimbert, Karinne Miqueu, Didier Bourissou
Summary: Gold(III) catalysis has developed rapidly in recent years, showing complementary features compared to gold(I) catalysis. However, little is known about the mechanism and key intermediates of Au(III)-catalyzed transformations. This study provides a detailed experimental/computational mechanistic study of the intermolecular hydroarylation of alkynes catalyzed by (P,C)-cyclometalated Au(III) complexes. The study identifies key intermediates and elucidates the reaction mechanism.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Paul W. Davies
Summary: The combination of a nucleophilic nitrene equivalent, a triple bond, and a pi-acid catalyst has been utilized for efficient transformations to prepare azacycles. The development of an annulation strategy and the use of different N-acyl and N-heterocyclic pyridinium-N-aminides are discussed, showcasing highly efficient processes with structural and functional group tolerance. Additionally, the use of heteroatom-substituted alkynes and the reactivity of ynamides and alkynyl thioethers as enabling tools for reaction discovery are highlighted.
Article
Biophysics
Lu Ren, Hongtao Ji, Karine Heuze, Bruno Faure, Emilie Genin, Pierre Rousselot Pailley, Thierry Tron
Summary: The study explored the immobilization of laccase onto magnetic nanoparticles with different surface chemical coatings, which showed substantial differences in reactivity depending on the nature of the substrate, with amplitudes ranging from 1 to > 4 folds. Considering enzyme orientation in surface modification design represents a way to introduce selectivity in laccase-catalyzed reactions.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Chemistry, Organic
Katharina Rode, Poorva Ramadas Narasimhamurthy, Rene Rieger, Felix Kraetzschmar, Alexander Breder
Summary: The facile synthesis of aminoallenes through a selenium-pi-acid-catalyzed cross-coupling of N-fluorinated sulfonimide with simple alkynes has been achieved. This method offers a simple and efficient way to construct the aminoallene motif using ordinary internal alkynes as precursors, tolerating various functional groups and providing the target compounds in up to 86% yield.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
Tania Medina-Gil, Anna Sadurni, L. Anders Hammarback, Antonio M. Echavarren
Summary: In this study, a new method was developed for the reaction of acetylene gas with o-allylphenols, resulting in the formation of chromanes through nucleophilic regioselective opening of cyclopropyl gold(I)-carbene intermediates. The synthetic application of this method was demonstrated in the late-stage functionalization of the natural product lapachol.
Article
Chemistry, Multidisciplinary
Shashank P. Sancheti, Yukta Singh, Manoj V. Mane, Nitin T. Patil
Summary: This study reports the first gold-catalyzed 1,2-dicarbofunctionalization of alkynes using organohalides as non-prefunctionalized coupling partners. The mechanism of the reaction involves an oxidative addition/pi-activation pathway, which is different from the migratory insertion/cis-trans isomerization pathway observed in other transition metal catalysis. Mechanistic investigations including experiments, NMR studies, HR-MSMS analyses, and DFT calculations provide strong support for the proposed mechanism.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
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)