Article
Chemistry, Organic
Kento Asai, Koji Hirano, Masahiro Miura
Summary: A new method for the palladium-catalyzed benzylic silylation of diarylmethyl carbonates with silylboranes has been developed. The reaction proceeds smoothly even without external base, and high yields of benzylic silanes are obtained. The obtained silanes can work as nucleophiles and react with carbon electrophiles to deliver benzylic C-C cross-coupled products.
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Hayato Tsurugi, Kazushi Mashima
Summary: Recent advances in the catalytic application of cerium complexes have been achieved through controlling the Ce(IV/III) redox couple. Cerium complexes can be used as catalysts by introducing supporting ligands around the coordination sphere of cerium and taking advantage of the photoresponsive properties of Ce(IV) and Ce(III) species. Overall, cerium complexes as new and promising homogeneous catalyst candidates for a variety of organic transformations under mild reaction conditions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Hiroki Yamagishi, Hayate Saito, Jun Shimokawa, Hideki Yorimitsu
Summary: This study developed a stable source of sodium silylsilanolates for silylation of aryl halides and pseudohalides. Mechanistic studies showed that a nucleophilic attack of silanolate on a palladium center forms a silylsilanolate-coordinated arylpalladium intermediate, and a polymeric cluster of silanolate species assists in the intramolecular migration of silyl groups, which promotes efficient transmetalation.
Article
Chemistry, Applied
Yingqi Mi, Yuan Chen, Wenqiang Tan, Jingjing Zhang, Qing Li, Zhanyong Guo
Summary: In this study, different chitosan derivatives were synthesized by ion exchange of glyoxylate bearing Schiff base with chitosan quaternary ammonium salts. The results showed that glyoxylate bearing Schiff base significantly improved the bioactivity of chitosan derivatives, with good antioxidant and antifungal activities.
CARBOHYDRATE POLYMERS
(2022)
Article
Chemistry, Physical
Liqiu Chu, Zhiyu Zhou, Zhipan Feng, Xinqi Zhao, Huimin Tan, Yu Chen
Summary: In this study, HTCC/Fe3O4/CdTe magnetic fluorescent nanoparticles (MFCNPs) that can be well dispersed in water were prepared via electrostatic interaction. The nanoparticles showed good biocompatibility and their properties were mainly influenced by the relative ratios of different components. The chitosan-based magnetic fluorescent composite may be a promising delivery carrier candidate.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Multidisciplinary
Odelia Levana, Ji Hoon Jeong, Sung Sik Hur, Wonbin Seo, Minho Lee, Kyung Mu Noh, Soonkook Hong, Jae Hong Park, Ju Hun Lee, Chulmin Choi, Yongsung Hwang
Summary: In this study, an antibacterial surface composed of thermoplastic poly-urethane (TPU) embedded with bentonite and MMT clay containing quaternary ammonium salts (QAS) was developed to prevent bacterial adhesion. The results showed that the nanoclay-embedded TPU surfaces with QAS significantly reduced the adhesion of E. coli and S. aureus, and a higher nanoclay concentration enhanced the effectiveness.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Organic
Ming Zheng, Jing Hou, Li-Li Hua, Wan-Ying Tang, Le-Wu Zhan, Bin-Dong Li
Summary: This study presents a visible-light-mediated divergent 1,2-silylfunctionalization of alkenes under ambient conditions, yielding a variety of silanes including beta-alkoxy, beta-alkylthio, beta-hydroxy, and beta-indolyl silanes. Vinylsilanes were also successfully prepared without the need for an additional nucleophile.
Article
Chemistry, Multidisciplinary
Shuo Lu, Tianyu Zheng, Jiawei Ma, Zhangming Deng, Shengmeng Qin, Yu Chen, Yong Liang
Summary: In this study, a new ionic ligand is developed and successfully used for the para-selective functionalization of aromatic salts. The reaction shows great potential in gram-scale transformation, late-stage elaboration for drug molecules, and diversification of products.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Biotechnology & Applied Microbiology
Nicol Strakova, Ekaterina Shagieva, Petra Ovesna, Kristyna Korena, Hana Michova, Katerina Demnerova, Ivana Kolackova, Renata Karpiskova
Summary: This study evaluated the occurrence of Campylobacter jejuni and Campylobacter coli in different water sources, finding that physico-chemical parameters influence their presence. The concentration of ammonium and chloride ions can be used to successfully predict the potential occurrence of C. jejuni and C. coli in wastewater and surface water in the future.
JOURNAL OF APPLIED MICROBIOLOGY
(2022)
Article
Chemistry, Physical
Hai-long Zhang, Chang-e Yang, Jing Du, Jun-bo He, Wei-nong Zhang
Summary: This study explored the detoxification effect and mechanism of montmorillonite modified with quaternary ammonium salts (QAS) on zearalenone (ZEN) in corn oil. The results showed that the QAS-modified montmorillonite was an excellent adsorbent for removing ZEN from corn oil. The adsorption process of the modified montmorillonite on ZEN was mainly chemical adsorption. Additionally, the modified montmorillonite could improve the quality of corn oil.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Organic
Pufan Ni, Lei Yang, Yi Shen, Lei Zhang, Yueyue Ma, Maolin Sun, Ruihua Cheng, Jinxing Ye
Summary: A general method for synthesizing phenols from electron-deficient aryl ammonium salts or heteroaryl ammonium salts was developed using hydroxide surrogates such as benzaldehyde oxime, acetohydroxamic acid, and hydroxylamine hydrochloride, resulting in yields of 20-98%.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Applied
Christopher Mairhofer, Mario Waser
Summary: Dibenzoylperoxide was found to be a versatile oxidant for reactions of phenol derivatives with NaN3 catalyzed by quaternary ammonium iodide or bromide. The use of iodides allowed for efficient benzylic azidations, while the use of bromides allowed for dearomative azidations. Both methods have been successfully applied to various phenol derivatives, and an enantioselective variant using chiral quat. ammonium bromides has been demonstrated.
ADVANCED SYNTHESIS & CATALYSIS
(2023)
Article
Chemistry, Physical
Xun Gong, Peng Deng, Jianhua Cheng
Summary: This study demonstrates that a series of aromatic heterocycles can undergo regioselective C-H silylation under mild conditions by using compound 1.
Article
Chemistry, Physical
Guanmeng Li, Weifeng Zhang, Yan Zhang, Yangjin Lee, Zihan Zhao, Xue-zhi Song, Zhenquan Tan, Kwanpyo Kim, Nan Liu
Summary: Synergistic additives, ammonium salts, have been used in the chemical vapor deposition (CVD) growth of MoS2 to achieve controlled domain layering and shape, as well as centimeter-scale films. This method enables direct fabrication of MoS2 electronic devices on clean substrates without the need for transfer steps, and it also promotes improved hydrogen evolution reaction (HER) performance. The use of ammonium salts in CVD paves the way for practical applications of MoS2 in modern electronics and catalysis.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Organic
Hui Wu, Youqing He, Kai Sun, Yaling Xu, Wenting Wang, Ge Wu
Summary: A method for iodine(iii)-mediated dehydroaromatization of cyclohexanones with primary amines and CD3SSO3Na has been developed, providing direct access to ortho-SCD3 anilines with the formation of C-N and C-S bonds. Detailed mechanism studies indicate that hypervalent iodine(iii) plays dual roles as an efficient mediator and an oxidant, and the continuously generated alpha-acetoxylated ketones and alpha-SCD3 ketones are the key intermediates in the current three-component reactions. The present transformations demonstrate excellent chemo-selectivity and are applicable for late-stage modification of numerous pharmaceuticals.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Yong Luo, Yuanhong Ma, Zhaomin Hou
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2018)
Article
Chemistry, Multidisciplinary
Wenxuan Xu, Huailong Teng, Yong Luo, Shaojie Lou, Masayoshi Nishiura, Zhaomin Hou
CHEMISTRY-AN ASIAN JOURNAL
(2020)
Article
Chemistry, Multidisciplinary
Shao-Jie Lou, Liang Zhang, Yong Luo, Masayoshi Nishiura, Gen Luo, Yi Luo, Zhaomin Hou
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Chemistry, Organic
Hao Ding, Wan-Ying Qi, Jing-Song Zhen, Qiuping Ding, Yong Luo
TETRAHEDRON LETTERS
(2020)
Article
Chemistry, Organic
Xiao-Hong Xu, Jing-Song Zhen, Xian Du, Han Yuan, Yi-Hui Li, Man-Hei Chu, Yong Luo
Summary: A visible-light-mediated late-stage sulfonylation of anilines with sulfonamides under simple reaction conditions is demonstrated. Various primary or secondary sulfonamides, including several pharmaceuticals, were successfully incorporated through N-S bond activation and C-H bond sulfonylation. The synthetic utility of this strategy is highlighted by the construction of complex anilines bearing diverse bioactive groups.
Article
Chemistry, Physical
Jingsong Zhen, Xian Du, Xiaohong Xu, Yihui Li, Han Yuan, Dejing Xu, Can Xue, Yong Luo
Summary: A visible-light-mediated late-stage arylation of N-S bonds in sulfonamides has been developed using readily available imines as sulfonyl radical source. This methodology characterized by broad substrate scope and simple reaction conditions also has high atom economy.
Article
Chemistry, Organic
Xian Du, Jing-Song Zhen, Xiao-Hong Xu, Han Yuan, Yi-Hui Li, Yeqin Zheng, Can Xue, Yong Luo
Summary: Sulfonamides have many advantages and can be used to efficiently synthesize various complex sulfones by utilizing sulfonyl imines as sulfonyl radical precursors via visible-light irradiation.
Article
Chemistry, Organic
Jingsong Zhen, Yihui Li, Han Yuan, Xiaohong Xu, Xian Du, Xin-Qing Li, Yong Luo
Summary: In this study, visible-light-mediated cross-coupling of sulfonyl fluorides and aryl boronic acids in water was explored without the presence of transition metals, providing an efficient and environmentally-friendly method for the synthesis of diaryl sulfones. Sulfonyl fluorides, as stable and readily available sulfonyl radical sources, enable sulfone synthesis under mild reaction conditions with high functional group tolerance.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Yong Luo, Hao Ding, Jing-Song Zhen, Xian Du, Xiao-Hong Xu, Han Yuan, Yi-Hui Li, Wan-Ying Qi, Bing-Zhe Liu, Shi-Man Lu, Can Xue, Qiuping Ding
Summary: This novel methodology achieves the sulfonylation of boronic acids with sulfonamides through visible light-mediated N-S bond cleavage, showing simplicity, good functional group tolerance, and high efficiency. Successful late-stage functionalization examples suggest a high potential utility in pharmaceutical science and organic synthesis.
