Review
Crystallography
Weiqing She, Zhenzhen Xu, Lianjie Zhai, Junlin Zhang, Jie Huang, Weiqiang Pang, Bozhou Wang
Summary: Due to the introduction of oxygen atoms, N-oxide energetic compounds possess unique advantages in terms of oxygen balance, detonation properties, and energy density, which have attracted extensive attention from researchers worldwide. This article provides a comprehensive review of the synthetic strategies for two categories of N-oxides, azine N-oxides and azole N-oxides, and discusses the reaction mechanisms of aromatic N-oxide frameworks and their applications in creating high-energy substances. Furthermore, the energetic properties of N-oxide energetic compounds are compared and summarized.
Article
Chemistry, Inorganic & Nuclear
Ruonan Chen, Hongyan Yuan, Yawen Wang, Hongyu Chen, Yanhua Zhang
Summary: This study reports the electrochemical decarboxylation for Csp3-N coupling between aliphatic carboxylic acids and N heterocycles. Various Nalkylation products are obtained in moderate to good yields using CF3SO2Na under ambient conditions in CH3CN with constant current. The use of Co(OAc)2 · 4H2O catalyst enables satisfying functional-group tolerance for both primary and secondary carboxylic acids, which has not been achieved in previous works.
Article
Biochemistry & Molecular Biology
Martina Palomba, Italo Franco Coelho Dias, Michelangelo Cocchioni, Francesca Marini, Claudio Santi, Luana Bagnoli
Summary: A new protocol for the synthesis of N-vinyl azoles using vinyl selenones and azoles in the presence of potassium hydroxide was developed. This reaction proceeded under mild and transition metal-free conditions through an addition/elimination cascade process. Both aromatic and aliphatic vinyl selenones and various mono-, bi- and tri-cyclic azoles can be tolerated and give terminal N-vinyl azoles in moderate to high yields. A plausible mechanism is also proposed.
Article
Chemistry, Multidisciplinary
Yun Ma, Ryan A. Woltornist, Russell F. Algera, David B. Collum
Summary: This study compared the catalytic effects of PMDTA and TMEDA, highlighting the importance of trifunctionality and kappa(2)-kappa(3) hemilability. PMDTA showed remarkable acceleration in reactions, with up to >30-fold accelerations using 10 mol % PMDTA. Additionally, solid-liquid phase-transfer catalysis was explored as a means to optimize the catalysis and explore the advantages of heterogeneous reaction conditions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Review
Chemistry, Multidisciplinary
Kai Wang, Chen Han, Zongping Shao, Jieshan Qiu, Shaobin Wang, Shaomin Liu
Summary: This review comprehensively elaborates the advances of perovskite oxides in advanced oxidation processes (AOPs) for water remediation, providing insights into their performance, structure, and tuning methods. Strategies for designing novel perovskite oxides to enhance catalytic activities in AOPs have been highlighted.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Organic
Olga Bakhanovich, Blanka Klepetarova, Petr Beier
Summary: Copper(I)-catalyzed cycloaddition of substituted cyclohexenyl acetylenes with azido(per)fluoroalkanes resulted in the synthesis of 4-cyclohexenyl-substituted N-(per)fluoroalkylated 1,2,3-triazoles. Subsequent rhodium(II)-catalyzed transannulation led to fused N-(per)fluoroalkyl pyrroles, which were further oxidized to N-(per)fluoroalkyl indoles.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2023)
Article
Environmental Sciences
Mingming Guo, Xiaoning Wang, Lizhong Liu, Xin Min, Xiaofang Hu, Weimin Guo, Nanwen Zhu, Jinping Jia, Tonghua Sun, Kan Li
Summary: In this study, cathode materials from spent lithium-ion batteries were recovered and used to prepare metal oxides catalysts for VOCs oxidation. Among the synthesized catalysts, MnOx (prepared via hydrothermal method) and CoOx (synthesized through co-precipitation) showed higher performance due to their specific surface area, concentration of active oxygen species, high-valence metal ion, and low-temperature reducibility, compared to other multi metal oxides studied. Further oxidation of by-products during VOCs oxidation was indicated to require high reaction temperatures.
ENVIRONMENTAL RESEARCH
(2021)
Article
Chemistry, Organic
Zhi-Xian Wu, Xue-Tao Xu, Yu-Xin Luan
Summary: N-Hydroxy benzimidazoles (NHBIs) have been proven to be efficient hydrogen atom abstractors (HAAs), but their potential in catalysis has been underexplored. In this study, we investigated their catalytic performance in various hydrogen atom transfer reactions. Specifically, we demonstrated a copper/NHBI co-catalyzed synthesis of 2-phosphonopyrroles through cascade [3 + 2] annulation-aromatization. NHBI played a crucial role in both the annulation step and the subsequent aromatization. Additionally, NHBI-catalyzed annulation with an imine and C-H oxidation reactions were also achieved. Notably, NHBIs bearing a docking group that can recognize substrates were explored as bifunctional HAT catalysts for the first time.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Biochemistry & Molecular Biology
Victor V. Dotsenko, Alexander V. Aksenov, Anna E. Sinotsko, Ekaterina A. Varzieva, Alena A. Russkikh, Arina G. Levchenko, Nicolai A. Aksenov, Inna V. Aksenova
Summary: The Michael addition reaction between dithiomalondianilide and arylmethylidene Meldrum's acids, along with subsequent heterocyclization, was investigated. The study also looked into the factors affecting the composition of the obtained products. The structure of one of the products was confirmed through X-ray crystallography.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Organic
Yuan Chen, Rui-jun Peng, Xue-jing Zhang, Ming Yan
Summary: In this study, Ru(II) and Rh(III) catalyzed reactions were utilized to synthesize isoquinoline-1,3,4-trione derivatives and nitroso ylide products, respectively, using diazoindandiones and N,N-dialkylnitrosoamines. These reactions exhibited efficient, diverse, and stable characteristics, providing valuable insights into the synthetic potential of diazo compounds and N,N-dialkylnitrosoamines in chemical transformations.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Kseniia Titenkova, Alexander D. Shuvaev, Fedor E. Teslenko, Egor S. Zhilin, Leonid L. Fershtat
Summary: Electrochemical synthesis is being used to create new strategies for the assembly of complex organic molecules. However, forming N-N bonds electrochemically is still challenging due to the electronegativity of nitrogen and side reactions. In this study, a green electrochemical approach was presented to selectively form N-N bonds using oximinohydrazones. The resulting 1,2,3-triazole 1-oxides possess thermally stability and show promise for the development of functional organic materials and pharmaceutical ingredients.
Review
Chemistry, Applied
Yun Xing, Chen Li, Jianping Meng, Zhen Zhang, Xin Wang, Zhichuan Wang, Yong Ye, Kai Sun
Summary: Allyl alcohol compounds are widely used as structural units for synthesizing important carbonyl compounds through migration rearrangement reactions, but the research is still in exploratory stages and lacks a comprehensive review summarizing significant advances in this field.
ADVANCED SYNTHESIS & CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Chaohuang Chen, Constantin G. Daniliuc, Gerald Kehr, Gerhard Erker
Summary: The synthesis of element-carbon double bonds is described in this passage, focusing on the reactions with various molecules to form annulated heterocycles.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Milosz Frydrych, Bogna Sztorch, Dariusz Brzakalski, Daria Pakula, Robert E. Przekop, Kanugula Srishailam, Byru Venkatram Reddy, Bogdan Marciniec
Summary: The research presented in this paper investigates the reactivity of unsaturated borasilsesquioxanes under organometallic transformations. The catalytic hydrosilylation reaction was explored using silanes, siloxanes, and silsesquioxanes with a platinum catalyst. High yields (>90%) of the products were obtained and their structures were confirmed using spectroscopy and spectrometry. The significant focus of the study is the spontaneous redistribution reaction of the alkoxy group from silane to borane moiety, which goes beyond heterosilsesquioxane chemistry. The formation of silicon-boron hybrid molecules was confirmed using GC-MS, ESI-MS methods, and B3LYP exchange-correlation.
Review
Acoustics
Ingrid V. Machado, Jhonathan R. N. dos Santos, Marcelo A. P. Januario, Arlene G. Correa
Summary: By utilizing ultrasound-assisted multicomponent reactions under heterogeneous catalysis, it is possible to efficiently synthesize biologically active organic compounds with reduced costs and energy consumption.
ULTRASONICS SONOCHEMISTRY
(2021)
