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Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]

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https://www.readbyqxmd.com/read/29044842/changing-perspectives-on-the-strategic-use-of-microwave-heating-in-organic-synthesis
#1
REVIEW
Gregory B Dudley, A E Stiegman
This Personal Account describes collaborative investigations into apocryphal microwave effects in organic chemistry. Focused research on microwave-assisted organic synthesis has been fraught with confusion, controversy, and misinformation. Microwave heating is an undoubtedly useful tactic for organic synthesis, but whether or not it can offer strategic advantages remains an open question in the minds of many people. (Ironically, those who do not consider it an open question are split as to whether it has been resolved affirmatively or negatively...
October 18, 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29044977/plasmon-exciton-coupling-interaction-for-surface-catalytic-reactions
#2
REVIEW
Jingang Wang, Weihua Lin, Xuefeng Xu, Fengcai Ma, Mengtao Sun
In this review, we firstly reveal the physical principle of plasmon-exciton coupling interaction with steady absorption spectroscopy, and ultrafast transition absorption spectroscopy, based on the pump-prop technology. Secondly, we introduce the fabrication of electro-optical device of two-dimensional semiconductor-nanostructure noble metals hybrid, based on the plasmon-exciton coupling interactions. Thirdly, we introduce the applications of plasmon-exciton coupling interaction in the field of surface catalytic reactions...
October 16, 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/29024397/li4-ti5-o12-anode-structural-design-from-material-to-electrode-and-the-construction-of-energy-storage-devices
#3
REVIEW
Zhijie Chen, Honsen Li, Langyuan Wu, Xiaoxia Lu, Xiaogang Zhang
Spinel Li4 Ti5 O12 , known as a zero-strain material, is capable to be a competent anode material for promising applications in state-of-art electrochemical energy storage devices (EESDs). Compared with commercial graphite, spinel Li4 Ti5 O12 offers a high operating potential of ∼1.55 V vs Li/Li(+) , negligible volume expansion during Li(+) intercalation process and excellent thermal stability, leading to high safety and favorable cyclability. Despite the merits of Li4 Ti5 O12 been presented, there still remains the issue of Li4 Ti5 O12 suffering from poor electronic conductivity, manifesting disadvantageous rate performance...
October 12, 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28929624/structural-mimics-of-phenyl-pyridine-ppy-substituted-phosphorescent-cyclometalated-homo-and-heteroleptic-iridium-iii-complexes-for-organic-light-emitting-diodes-an-overview
#4
REVIEW
Aravind Babu Kajjam, Sivakumar Vaidyanathan
Today organic light emitting diodes are a topic of significant academic and industrial research interest. OLED technology is used in commercially available displays, and efforts have been directed to improve this technology. Design and synthesis of phosphorescent based transition metals are capable of harvesting both singlet and triplet excitons and achieve 100 % internal quantum efficiency is an active area of research. Among all the transition metals, iridium is considered a prime candidate for OLEDs due to its prominent photophysical characteristics...
September 20, 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28925581/advanced-materials-based-on-polymers-and-ionic-liquids
#5
REVIEW
Yuzo Kitazawa, Kazuhide Ueno, Masayoshi Watanabe
Ionic liquids (ILs) are ambient temperature molten salts, which have attracted considerable attention owing to their unique properties. In this contribution, we review advanced materials composed of ILs and polymers for the basis of a new design protocol to fabricate novel materials. As electrolytes for electrochemical devices, cross-linked polymers containing ILs (ion gels) are endowed with functional properties inherited from ILs and mechanical consistency derived from polymers. To create such materials, micro-phase separation of block copolymers and colloidal arrays in the ILs are utilized...
September 19, 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28892275/selective-synthesis-of-fluorine-containing-cyclic-%C3%AE-amino-acid-scaffolds
#6
REVIEW
Loránd Kiss, Ferenc Fülöp
Fluorine-containing organic molecules have generated increasing impact in drug research over the past decade. Their preparation and development of novel synthetic methods towards new types of fluorinated molecules among them of β-amino acid derivatives has received large interest. Our research group have designed various highly selective and stereocontrolled methods for the construction of fluorine-containing cyclic β-amino acid derivatives. The synthetic approaches developed for the synthesis of various pharmacologically interesting cyclic β-amino acid derivatives as monomers with multiple stereogenic centers might be valuable protocols for the access of other classes of organic compounds...
September 11, 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28892248/colloidal-supercapattery-redox-ions-in-electrode-and-electrolyte
#7
REVIEW
Kunfeng Chen, Dongfeng Xue
Redox chemistry is the cornerstone of various electrochemical energy conversion and storage systems, associated with ion diffusion process. To actualize both high energy and power density in energy storage devices, both multiple electron transfer reaction and fast ion diffusion occurred in one electrode material are prerequisite. The existence forms of redox ions can lead to different electrochemical thermodynamic and kinetic properties. Here, we introduce novel colloid system, which includes multiple varying ion forms, multi-interaction and abundant redox active sites...
September 11, 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28880497/metal-organic-frameworks-mofs-as-functional-supramolecular-architectures-for-anion-recognition-and-sensing
#8
REVIEW
Tarak Nath Mandal, Avishek Karmakar, Shivani Sharma, Sujit K Ghosh
Metal-organic frameworks (MOFs) have experienced a tremendous growth during last few decades as porous crystalline molecular materials. The comprehensive effect of structural diversity, tunability and high surface area makes MOFs suitable for multifarious applications. MOFs can act as potential receptors toward different target components along with ionic species, small molecules, solvents, explosives etc. Anion recognition remains an important phenomena due to its involvement in many chemical and biological processes...
September 6, 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28851023/journey-heading-towards-enantioselective-synthesis-assisted-by-organocatalysis
#9
REVIEW
Jasneet Kaur, Pankaj Chauhan, Sarbjit Singh, Swapandeep Singh Chimni
This personal account summarizes the design of various organocatalysts derived from amino acids and Cinchona alkaloids and their applications in enantioselective carbon-carbon and carbon-nitrogen bond formation reactions. This account begins with the short description of the background of asymmetric organocatalysis. Various types of reactions like aldol reaction, Michael reaction, aza-Henry reaction, Morita-Baylis-Hillman reaction are described in this account.
August 29, 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28841258/cesium-lead-halide-perovskite-nanostructures-tunable-morphology-and-halide-composition
#10
REVIEW
Muhammad Aamir, Tham Adhikari, Muhammad Sher, Malik Dilshad Khan, Javeed Akhtar, Jean-Michel Nunzi
Inorganic halide perovskite (CsPbX3 ) nanostructures have gained considerable interest in recent years owing to their enhanced stability and optoelectronic applications. Recent developments in the synthesis of nanostructures are reviewed. The impact of the precursor and ligand nature, temperature and growth time on the morphology and shape tuning of CsPbX3 nanostructures is described in relation to their optical properties. The presynthetic and postsynthetic anion exchange strategies to retain pre-existing crystal phase and shape are discussed in this minireview...
August 25, 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28815932/polymer-based-hybrid-nanocomposites-a-progress-toward-enhancing-interfacial-interaction-and-tailoring-advanced-applications
#11
REVIEW
Chang-Sik Ha
Organic/inorganic hybrid nanocomposites, in particular polymer based hybrid nanocomposites, constitute emerging advanced materials since they combine unique properties from the inorganic and organic (i. e. polymeric) components. We investigated three different hybrid nanocomposites depending on dimensions of the dispersed phase in the nanometer range,; polymer-layered silicate (PLS) nanocomposites where polymers are mixed with layered silicates, polymer/graphene oxide hybrid nanocomposites, and polymer hybrid nanocomposites with reinforcing polymers with isodimensional phases of inorganic silicas using sol-gel reactions...
August 17, 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28771921/design-and-synthesis-of-powerful-capsule-catalysts-aimed-at-applications-in-c1-chemistry-and-biomass-conversion
#12
REVIEW
Jun Bao, Noritatsu Tsubaki
Tandem catalytic reaction is a promising strategy to improve the utilization efficiency of energy and resources. The conventional hybrid catalysts cannot readily realize the precisely controlled synthesis of target products due to the unrestricted, open reaction environment. Assembling the hybrid catalyst with multiple active sites into core-shell structured capsule catalyst is one of the most effective ways to enhance the selectivity of desired products during a tandem catalysis process, because the core-shell structure offers a space-confined reaction field and synergistic effect...
August 3, 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28766897/removal-of-organic-pollutants-from-water-using-superwetting-materials
#13
REVIEW
Lingxiao Li, Junping Zhang, Aiqin Wang
The frequent occurrence of water pollution accidents and the leakage of organic pollutants have caused severe environmental and ecological crisis. It is thus highly imperative to find efficient materials to solve the problem. Inspired by the lotus leaf, superwetting materials are receiving increasing attention in the field of removal of organic pollutants from water. Various superwetting materials have been successfully generated and integrated into devices for removal of organic pollutants from water. On the basis of our previous work in the field, we summarized in this account the progress of removal of (1) floating and underwater insoluble, (2) emulsified insoluble, and (3) both insoluble and soluble organic pollutants from water using superwetting materials including superhydrophobic & superoleophilic materials, superhydrophilic & underwater superoleophobic materials, and materials with controllable wettability...
August 2, 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28745452/recent-progress-in-application-of-graphene-supported-metal-nanoparticles-in-c-c-and-c-x-coupling-reactions
#14
REVIEW
Mahmoud Nasrollahzadeh, Zahra Issaabadi, Mohammad Mostafa Tohidi, S Mohammad Sajadi
The carbon-carbon and carbon-heteroatom bonds catalytic formation is among the most significant reactions in organic synthesis which extensively applied for synthesis of natural products, heterocycles, dendrimers, biologically active molecules and useful compounds. This review provides the latest advances in the preparation of graphene supported metal nanoparticles and their application in the catalytic formation of both carbon-carbon (C-C) and carbon-heteroatom (C-X) bonds including the Suzuki, Heck, Hiyama, Ullmann, Buchwald and Sonogashira coupling reactions...
July 26, 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28485131/physicochemical-nature-of-perfluoroalkyl-compounds-induced-by-fluorine
#15
REVIEW
Takeshi Hasegawa
Perfluoroalkyl (Rf ) compounds have unique characters represented by a significantly high hydrophobic property, which often makes us consider that Rf groups should be interacted with each other via the 'hydrophobic interaction' as found for a normal hydrocarbon. Due to a similar intuitive and simplistic speculation, the Rf -specific material properties have long been enveloped in darkness for comprehensive understanding, which should lucidly be discussed within a framework of physical chemistry. Here, we show studies on the stratified dipole arrays (SDA) theory, which readily explains the Rf -specific material characters in a comprehensive manner based on only a few fundamental physical parameters of fluorine...
October 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28452190/practical-synthesis-of-both-enantiomeric-amino-acid-mannich-and-aldol-derivatives-by-asymmetric-organocatalysis
#16
REVIEW
Yan Liu, Natarajan Arumugam, Abdulrahman I Almansour, Raju Suresh Kumar, Keiji Maruoka
In this account, we describe our recent developments in organocatalyzed asymmetric methodologies for the practical synthesis of both enantiomers. The synthesis of both enantiomeric products by using both enantiomeric catalysts is the most traditional way. In addition, use of two pseudoenantiomeric catalysts provides a more practical approach for the synthesis of both enantiomeric products. Even more efficient is the use of a single enantiomeric catalyst in the presence or absence of certain additives for obtaining both enantiomeric products...
October 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28444986/supported-ionic-liquids-a-versatile-and-useful-class-of-materials
#17
REVIEW
Vincenzo Campisciano, Francesco Giacalone, Michelangelo Gruttadauria
Supported ionic liquids (SILs) represent a class of materials with peculiar properties and a huge potential regarding their possible applications in different fields of chemistry. Herein, we report our ongoing research about the use of SILs as support for organocatalysts, their role as catalysts themselves, and their application as support and stabilizers of palladium nanoparticles (PdNPs). The use of SILs based materials allowed achieving good results. Moreover, in some cases, after the functionalization of the catalytic species with an ion-tag moiety, a release and catch approach was employed in order to improve the catalytic activity and to facilitate the recovery of the hybrid system formed by the catalyst adsorbed onto SILs materials...
October 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28378920/application-of-fischer-indolization-under-green-conditions-using-deep-eutectic-solvents
#18
REVIEW
Sambasivarao Kotha, Chandravathi Chakkapalli
Indole and its derivatives captured the attention of organic chemists due to their applications in medicinal chemistry. The examples covered here are intricate polycyclic indole derivatives and these include: azapolyquinanes, cyclophanes, spirocycles and other heterocycles. We found that deep eutectic mixture such as L-(+)-tartaric acid (TA) and dimethyl urea (DMU) is useful to prepare complex unnatural indole derivatives. These conditions from time to time produced indole derivatives which are not possible by conventional methods...
October 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28375569/1-8-naphthalimide-a-potent-dna-intercalator-and-target-for-cancer-therapy
#19
REVIEW
Runjhun Tandon, Vijay Luxami, Harsovin Kaur, Nitin Tandon, Kamaldeep Paul
The poor pharmacokinetics, side effects and particularly the rapid emergence of drug resistance compromise the efficiency of clinically used anticancer drugs. Therefore, the discovery of novel and effective drugs is still an extremely primary mission. Naphthalimide family is one of the highly active anticancer drug based upon effective intercalator with DNA. In this article, we review the discovery and development of 1,8-naphthalimide moiety, and, especially, pay much attention to the structural modifications and structure activity relationships...
October 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
https://www.readbyqxmd.com/read/28318093/synthesis-of-imidazo-1-2-a-pyridines-c-h-functionalization-in-the-direction-of-c-s-bond-formation
#20
REVIEW
Chitrakar Ravi, Subbarayappa Adimurthy
Imidazo[1,2-a]pyridines play an important role in medicinal chemistry. In spite of very drastic developments on syntheses and functionalization in this area, the use of inexpensive catalysts and mild reaction conditions constitutes an important role in pharmaceutical applications. This account describes our recent efforts on the development of new methods for the synthesis of imidazo[1,2-a]pyridines using readily available starting substrates and catalysts under very mild reaction conditions. In the direction of enhancement of biological activity, we also described the synthesis of functionalized imidazo [1,2-a]pyridine derivatives...
October 2017: Chemical Record: An Official Publication of the Chemical Society of Japan ... [et Al.]
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