Article
Chemistry, Multidisciplinary
Ying Zhang, Huanjie Gao, Jiabao Guo, Hao Zhang, Xiaoquan Yao
Summary: An electrochemical oxidative para-C-H-thiocyanation method has been developed for the construction of thiocyanato aromatic compounds from aromatic amines, under metal-free, oxidant-free, and exogenous-electrolyte-free conditions in an undivided cell. This approach is compatible with various types of amines and exhibits good functional group tolerance, providing an economical and environmentally friendly route for the para-thiocyanation of aromatic amines.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Kairui Cai, Wenjing Wang, Jie Zhang, Lei Chen, Lianke Wang, Xiaojiao Zhu, Zhipeng Yu, Zhichao Wu, Hongping Zhou
Summary: The exploration of fully conjugated covalent organic framework (COF)-based photocatalysts has become valuable research due to their excellent stability, outstanding semiconducting properties, and fascinating properties. In this study, three olefin-linked 2D COFs were designed and synthesized, demonstrating high crystallinity and preeminent stability. The COFs' pore wall surface was modified to induce distinct inductive and conjugative effects, which were then transmitted to the COF's backbone, allowing for regulation of the absorption range, band gap, and charge transfer efficiency. Among the COFs, the MeO-TBT-COF with a surface methoxy site exhibited the highest photocatalytic activity and recyclability. This study presents a facile strategy for the design and construction of olefin-linked COF-based photocatalysts through the tuning of the framework's pore wall surface groups.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Review
Chemistry, Organic
Chitteti Divyavani, Pannala Padmaja, Vinod G. Ugale, Pedavenkatagari Narayana Reddy
Summary: This review highlights various methods for the thiocyanation of indoles and emphasizes the importance of studying new approaches for the preparation of 3-thiocyanato-indoles. The mechanistic aspects and significance of these methods are also briefly discussed.
CURRENT ORGANIC SYNTHESIS
(2021)
Article
Chemistry, Multidisciplinary
Yan Zhang, Hamideh Khanbareh, Steve Dunn, Chris R. Bowen, Hanyu Gong, Nguyen Phuc Hoang Duy, Pham Thi Thuy Phuong
Summary: This study reports the use of ultrasound to split water using a ferroelectric nanofluid BaTiO3 suspension, which forms a stable nanofluid. The nanofluid exhibits high efficiency and long-term stability. This work demonstrates the potential of harnessing vibrations for water splitting.
Article
Acoustics
Henrik E. Hansen, Frode Seland, Svein Sunde, Odne S. Burheim, Bruno G. Pollet
Summary: Optimizing the surface area of nanoparticles is crucial for the catalytic performance of electrochemical energy conversion devices. This study investigated the effect of different frequencies on the sonochemical synthesis of Pt nanoparticles and found that lower frequencies resulted in smaller agglomerates and higher electrochemical surface areas, while the primary particle size and catalytic activity remained constant across the entire frequency range.
ULTRASONICS SONOCHEMISTRY
(2022)
Article
Acoustics
Clio Siebenmorgen, Albert Poortinga, Patrick van Rijn
Summary: Sonochemistry is an emerging field that uses acoustic waves to induce physical and chemical changes, showing potential in accelerating reaction rates and altering physical properties of the system. While it has found applications in various industries, research in the (bio-)medical field mostly remains in the laboratory stage.
ULTRASONICS SONOCHEMISTRY
(2023)
Review
Acoustics
Dong Zhang, Xiaoyu Wang, Jiaji Lin, Yongqin Xiong, Haoxuan Lu, Jiayu Huang, Xin Lou
Summary: This paper provides an overview of the mechanisms, implementations, applications and decisive parameters of multi-frequency therapeutic ultrasound, showcasing its advantages and future potentials.
ULTRASONICS SONOCHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Robin Kueng, Robert Goestl, Bernd M. Schmidt
Summary: The design and manipulation of (multi)functional materials at the nanoscale is of great importance for future technological advancements. Incorporating force-responsive groups allows for exploration of complex behaviors and functions of structures. Among various force-activated motifs, the on-demand release or activation of compounds is sought-after, enabling small molecule function from macromolecular frameworks. Ultrasound-induced mechanochemistry provides a solution for molecular cargo release from polymer-based architectures.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Rajib Maity, Abhijit Bankura, Indrajit Das
Summary: Reported is an electrochemical cascade reaction for remote C-H functionalization, enabling the conversion of quinoxalin-2(1H)-ones into 7-thiocyanatoquinoxalin-2(1H)-ones. The strategy utilizes inexpensive graphite electrodes and commercially cheap ammonium thiocyanate as the thiocyanate source in a CH3CN/H2O solvent mixture, achieving the transformation in an undivided cell at a constant current. This oxidant-free approach not only offers sustainability and efficiency benefits but also allows for the synthesis of C3-deuterated derivatives.
Article
Acoustics
Cherie C. Y. Wong, Jason L. Raymond, Lillian N. Usadi, Zhiyuan Zong, Stephanie C. Walton, Adam C. Sedgwick, James Kwan
Summary: Sonochemistry utilizes ultrasound to generate reactive radicals, offering a green alternative for hydrogen production, wastewater treatment, and chemical synthesis. Conventional sonochemical reactors often have design limitations resulting in low efficacy and slow reaction kinetics. A novel reactor design was constructed, creating intense localized high pressure amplitudes capable of spontaneous cavitation, leading to significantly higher hydroxyl radicals production rate and sonochemical efficiency.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Acoustics
Hanxiao Mei, Zhiliang Gao, Qian Wang, Haifeng Sun, Kaijie Zhao, Peiyu Zhang, Jingcheng Hao, Muthupandian Ashokkumar, Jiwei Cui
Summary: This study introduces a simple and green sonochemical process for PDA coatings, which can be obtained independent of solution pH and gas nature. The rate of film deposition by high frequency ultrasound is found to be faster than traditional methods, enabling the creation of PDA coatings in neutral or acidic aqueous solutions.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Fatemeh Karimi, Behnaz Tighsazzadeh, Beheshteh Asadi, Iraj Mohammadpoor-Baltork, Mahsa Layeghi, Valiollah Mirkhani, Shahram Tangestaninejad, Majid Moghadam
Summary: An efficient and reusable catalyst has been synthesized and demonstrated high catalytic activity in the synthesis of multicomponent products under solvent-free conditions. The structure of the catalyst has been confirmed through various characterization techniques, and it has shown excellent recyclability in testing. The catalyst's recyclability, high product yield, short reaction time, and clean reaction profile make it promising for potential applications.
Article
Chemistry, Organic
Zhibing Weng, Liang Wang
Summary: A convenient electrophilic thiocyanation of indoles in the CeBr3/H2O2 system has been developed. The reaction conditions are mild, providing the corresponding products in good to excellent yields in short reaction times.
TETRAHEDRON LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Jiaoyu Wu, Linqiang Li, Mengtian Liu, Lu Bai, Xinjun Luan
Summary: A novel Pd-0-catalyzed [2+2+1] annulation was proposed for the rapid assembly of tricyclic indoles in a single-step transformation. Experimental results showed that large tert-butyl and benzyl groups were selectively cleaved via an S(N)1 pathway in the presence of smaller alkyl groups.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Organic
Qin Shi, Haiyan Hu, Minxing Du, Yajun Sun, Yudong Li, Yuehui Li
Summary: In this study, CO2/H2 was used as a methylation reagent for selective C-H methylation of heteroarenes. The reaction was catalyzed by cobalt/B(C6F5)3, and the Lewis acidic additive B(C6F5)3 played a crucial role in achieving good reactivity. The reaction proceeds via CO2 reduction, C-C bond formation, and reduction. Water is the only byproduct of this environmentally friendly alternative for C-H methylation.
Article
Chemistry, Multidisciplinary
Kobra Nikoofar, Maryam Haghighi, Zahra Khademi
ARABIAN JOURNAL OF CHEMISTRY
(2019)
Article
Multidisciplinary Sciences
Kobra Nikoofar, Shekoufe Moazzez Dizgarani
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES
(2019)
Article
Chemistry, Organic
Kobra Nikoofar, Fatemeh Mehrikaram, Maryam Lashanizadegan, Arezoo Aghaei
Summary: A novel air/moisture stable copper(II)-Schiff base complex supported on multi-walled carbon nanotubes has been prepared and characterized. The catalytic activity of this nanocatalyst in the synthesis of dihydro-spiro[cycloalkane-1,4 '-quinoline]-2 ',5 '-diones has been demonstrated, showing high yields of desired products through creating new C-C and C-N bonds. The recovery and reusability of the nanocatalyst has also been confirmed through three runs without activity loss.
POLYCYCLIC AROMATIC COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Kobra Nikoofar, Seyedeh S. Peyrovebaghi
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
(2020)
Article
Chemistry, Inorganic & Nuclear
Kobra Nikoofar, Fatemeh Shahriyari
Article
Chemistry, Applied
Fatemeh Molaei Yielzoleh, Kobra Nikoofar
Summary: This research demonstrates a solvent-free four-component one-pot reaction to obtain thiazolidin-2-imines using a novel magnetite-based multilayered inorganic-bioorganic nanohybrid. The synthesized nanostructure was characterized using various techniques, and the approach showed high yields, simple work-up procedure, and excellent reusability of the catalytic material.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Chemistry, Organic
Fatemeh Molaei Yielzoleh, Kobra Nikoofar
Summary: This research successfully prepared a new bio multilayered nanostructure based on commercial nanomagnetite, characterized using various techniques. The nanostructure showed efficient catalytic activity for the synthesis of specific derivatives, demonstrating advantages such as easy preparation, short reaction times, and excellent reusability.
POLYCYCLIC AROMATIC COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Kobra Nikoofar, Fatemeh Molaei Yielzoleh
Summary: This study synthesized a series of substituted quinolines using simple substrates through a straightforward method under solvent-free conditions, with the use of various functional substrates. The newly developed inorganic-organic core-shell catalyst can be easily separated and recycled with the help of an external magnet, demonstrating high selectivity and reusability in the cascade annulation process.
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
(2021)
Article
Biochemistry & Molecular Biology
Kobra Nikoofar, Narges Saheb Ekhtiari
Summary: A new multilayered magnetized bio-nanocomposite was prepared and characterized using various techniques. The core-shell nanostructure showed catalytic activity in a three-component reaction, demonstrating eco-friendly features and reusability. The research highlights the potential of the bio-nanocomposite in organic transformations under benign conditions.
MOLECULAR DIVERSITY
(2022)
Article
Multidisciplinary Sciences
Kobra Nikoofar, Fatemeh Shahriyari
Summary: A simple and straightforward method was developed for the preparation of highly functionalized tetrahydropyridines via a pseudo five-component reaction, utilizing a novel ionic liquid in a green aqueous medium. The new ionic liquid was synthesized from easily-handled substrates and characterized by various techniques, showing efficient and convenient preparation of products with high yields in short reaction times.
SN APPLIED SCIENCES
(2021)
Review
Chemistry, Multidisciplinary
Fatemeh Molaei Yielzoleh, Kobra Nikoofar
Summary: This review focuses on the six-and pseudo-six-component transformations in organic syntheses as important and applicable MCRs, discussing their features and classifications based on reaction media. The usage and classification of such MCRs are highlighted, along with their potential applications in green chemistry.
CURRENT GREEN CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Kobra Nikoofar, Zahra Arian, Hoorieh Jahanbani
Summary: In this study, a novel AlCl3@nano Fe3O4-SiO2 nanostructure was successfully prepared and showed good reactivity and recyclability in chemical synthesis processes.
INORGANIC AND NANO-METAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Kobra Nikoofar, Fatemeh Shahriyari
IRANIAN JOURNAL OF CATALYSIS
(2020)
Review
Chemistry, Multidisciplinary
Zahra Khademi, Kobra Nikoofar
Article
Chemistry, Physical
Hannaneh Heidari, Kobra Nikoofar, Yeganeh Shahedi
IRANIAN JOURNAL OF CATALYSIS
(2019)
