Tag: 100-200

On January 25, 2021, Gisbert-Alonso, A.; Navarro-Huerta, J. A.; Torres-Lapasio, J. R.; Garcia-Alvarez-Coque, M. C. published an article.Synthetic Route of 578-58-5 The title of the article was Global retention models and their application to the prediction of chromatographic fingerprints. And the article contained the following:

The resolution of samples containing unknown compounds of different nature, or without standards available, as is the case of chromatog. fingerprints, is still a challenge. Possibly, the most problematic aspect that prevents systematic method development is finding models that describe without bias the retention behavior of the compounds in the samples. In this work, the use of global models (able to describe the whole sample) is proposed as an alternative to the use of individual models for each solute. Global models contain parameters that are specific for each solute, while other parameters -related to the column and solvent- are common for all solutes. A special regression procedure is presented for the construction of global models, which are applied to predict highly complex chromatograms, such as chromatog. fingerprints, for diverse exptl. conditions in isocratic and gradient elution. Another interesting application is the prediction of mol. properties, such as log Po/w, from the specific solute parameters of the global models. The examined adapted models are based on the equations proposed by Snyder, Schoenmakers, Neue and Kuss, Jandera, and Bosch Roseś to describe the retention. In all cases, the predictive capability was very satisfactory. Two cases of study were considered: chromatograms of chamomile extracts analyzed using acetonitrile gradients, and a set of 145 known compounds in a wide range of structures and functionalities, eluted isocratically with acetonitrile/water mobile phases. The experimental process involved the reaction of 2-Methylanisole(cas: 578-58-5).Synthetic Route of 578-58-5

The Article related to global retention model chromatog fingerprints, global retention models, gradient elution, hplc, medicinal plants, prediction of chromatographic fingerprints, Organic Analytical Chemistry: Separations and other aspects.Synthetic Route of 578-58-5

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Ether | (C2H5)2O – PubChem

On July 31, 2020, Van Gelder, Kristen; Forrester, Taylor; Akhtar, Tariq A. published an article.Electric Literature of 91-16-7 The title of the article was Evidence from stable-isotope labeling that catechol is an intermediate in salicylic acid catabolism in the flowers of Silene latifolia (white campion). And the article contained the following:

Main conclusion: A stable isotope-assisted mass spectrometry-based platform was utilized to demonstrate that the plant hormone, salicylic acid, is catabolized to catechol, a widespread secondary plant compound Accordingly, in this study a series of stable isotope feeding experiments were performed with Silene latifolia (white campion) to explore possible routes of SA breakdown. S. latifolia flowers that were fed a solution of [2H6]-salicylic acid emitted the volatile and potent pollinator attractant, 1,2-dimethoxybenzene (veratrole), which contained the benzene ring-bound deuterium atoms. After feeding flowers with [2H6]-catechol, the stable isotope was recovered in veratrole as well as its precursor, guaiacol. Addition of a trapping pool of guaiacol in combination with [2H6]-salicylic acid resulted in the accumulation of the label into catechol. Finally, we provide evidence for catechol O-methyltransferase enzyme activity in a population of S. latifolia that synthesizes veratrole from guaiacol. This activity was absent in non-veratrole emitting flowers. Taken together, these results imply the conversion of salicylic acid to veratrole in the following reaction sequence: salicylic acid > catechol > guaiacol > veratrole. This catabolic pathway for SA may also be embedded in other lineages of the plant kingdom, particularly those species which are known to accumulate catechol. The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).Electric Literature of 91-16-7

The Article related to silene flower catechol salicylic acid catabolism isotope, catabolism, catechol, o-methyltransferase, phytohormone, salicylic acid, Plant Biochemistry: Development and Aging and other aspects.Electric Literature of 91-16-7

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Mekapothula, Subbareddy; Addicoat, Matthew A.; Boocock, David J.; Wallis, John D.; Cragg, Peter J.; Cave, Gareth W. V. published an article in 2020, the title of the article was Silica bound co-pillar[4+1]arene as a novel supramolecular stationary phase.Synthetic Route of 150-78-7 And the article contains the following content:

A novel co-pillar[4+1]arene incorporating 2 bromo-octyl substituents was synthesized for the 1st time, using microwave irradiation in high yield (88%) in under 4 min, and bound to the surface of chromatog. SiO2 particles. The resulting new stationary phase was successfully used to sep. xylene isomers via liquid chromatog. techniques. The experimental process involved the reaction of 1,4-Dimethoxybenzene(cas: 150-78-7).Synthetic Route of 150-78-7

The Article related to silica pillar arene supramol liquid chromatog stationary phase irradiation, Organic Analytical Chemistry: Separations and other aspects.Synthetic Route of 150-78-7

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Teng, Kun-Xu; Niu, Li-Ya; Yang, Qing-Zheng published an article in 2022, the title of the article was A host-guest strategy for converting the photodynamic agents from a singlet oxygen generator to a superoxide radical generator.Category: ethers-buliding-blocks And the article contains the following content:

Type-I photosensitizers (PSs) generate cytotoxic oxygen radicals by electron transfer even in a hypoxic environment. Nevertheless, the preparation of type-I PSs remains a challenge due to the competition of triplet-triplet energy transfer with O2 (type-II process). In this work, we report an effective strategy for converting the conventional type-II PS to a type-I PS by host-guest complexation. Electron-rich pillar[5]arenes are used as an electron donor and macrocyclic host to produce a host-guest complex with the traditional electron-deficient type-II PS, an iodide BODIPY-based guest. The host-guest complexation promotes intermol. electron transfer from the pillar[5]arene moiety to BODIPY and then to O2 by the type-I process upon light-irradiation, leading to efficient generation of the superoxide radical (O2- ). The results of anti-tumor studies indicate that this supramol. PS demonstrates high photodynamic therapy efficacy even under hypoxic conditions. This work provides an efficient method to prepare type-I PSs from existing type-II PSs by using a supramol. strategy. The experimental process involved the reaction of 1,4-Dimethoxybenzene(cas: 150-78-7).Category: ethers-buliding-blocks

The Article related to hypoxia photodynamics oxygen type ii photosensitizer glassy carbon electrode, Placeholder for records without volume info and other aspects.Category: ethers-buliding-blocks

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On November 30, 2021, Wang, Dongdong; Gong, Wanbing; Zhang, Jifang; Han, Miaomiao; Chen, Chun; Zhang, Yunxia; Wang, Guozhong; Zhang, Haimin; Zhao, Huijun published an article.Name: 2-Methylanisole The title of the article was Encapsulated Ni-Co alloy nanoparticles as efficient catalyst for hydrodeoxygenation of biomass derivatives in water. And the article contained the following:

Catalytic hydrodeoxygenation (HDO) is one of the most promising strategies to transform oxygen-rich biomass derivatives into high value-added chems. and fuels, but highly challenging due to the lack of highly efficient nonprecious metal catalysts. Herein, we report for the first time of a facile synthetic approach to controllably fabricate well-defined Ni-Co alloy NPs confined on the tip of N-CNTs as HDO catalyst. The resultant Ni-Co alloy catalyst possesses outstanding HDO performance towards biomass-derived vanillin into 2-methoxy-4-methylphenol in water with 100% conversion efficiency and selectivity under mild reaction conditions, surpassing the reported high performance nonprecious HDO catalysts. Impressively, our exptl. results also unveil that the Ni-Co alloy catalyst can be generically applied to catalyze HDO of vanillin derivatives and other aromatic aldehydes in water with 100% conversion efficiency and over 90% selectivity. Importantly, our DFT calculations and exptl. results confirm that the achieved outstanding HDO catalytic performance is due to the greatly promoted selective adsorption and activation of C=O, and desorption of the activated hydrogen species by the synergism of the alloyed Ni-Co NPs. The findings of this work affords a new strategy to design and develop efficient transition metal-based catalysts for HDO reactions in water. The experimental process involved the reaction of 2-Methylanisole(cas: 578-58-5).Name: 2-Methylanisole

The Article related to nickel cobalt alloy nanoparticle water biomass catalytic hydrodeoxygenation, Placeholder for records without volume info and other aspects.Name: 2-Methylanisole

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Ether | (C2H5)2O – PubChem

On November 30, 2021, Xiang, Yu; Yu, Xianglin; Li, Yaqin; Chen, Jingying; Wu, Jinjun; Wang, Lixia; Chen, Dugang; Li, Junbo; Zhang, Qichun published an article.Quality Control of 1,2-Dimethoxybenzene The title of the article was Covalent organic framework as an efficient fluorescence-enhanced probe to detect aluminum ion. And the article contained the following:

The fluorescence of two-dimensional (2D) covalent organic frameworks (COFs) are generally quenched by the strong layer-layer π-π stacking or the intramol. rotation. However, the latter effect can be reduced if the intramol. rotation in COFs can be restricted through the selective coordination with metal ions or small mols. Herein, we demonstrate that the fluorescence of p-methoxyl group-substituted imine-based COFs can be dramatically enhanced after coordination with Al3+ compared with other metal cations (i.e. Fe3+, Ni2+, Cd2+, Mn2+, Co2+, Zn2+, Hg2+, Ba2+, Mg2+ and K+) while o-methoxyl group-substituted one has no such phenomena, which might be due to the rotation of the uncoordinated C=N and C-O bonds in one side. The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).Quality Control of 1,2-Dimethoxybenzene

The Article related to covalent organic framework fluorescence enhanced probe detect aluminum ion, Placeholder for records without volume info and other aspects.Quality Control of 1,2-Dimethoxybenzene

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Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

On November 30, 2021, Xiang, Yu; Yu, Xianglin; Li, Yaqin; Chen, Jingying; Wu, Jinjun; Wang, Lixia; Chen, Dugang; Li, Junbo; Zhang, Qichun published an article.Related Products of 150-78-7 The title of the article was Covalent organic framework as an efficient fluorescence-enhanced probe to detect aluminum ion. And the article contained the following:

The fluorescence of two-dimensional (2D) covalent organic frameworks (COFs) are generally quenched by the strong layer-layer π-π stacking or the intramol. rotation. However, the latter effect can be reduced if the intramol. rotation in COFs can be restricted through the selective coordination with metal ions or small mols. Herein, we demonstrate that the fluorescence of p-methoxyl group-substituted imine-based COFs can be dramatically enhanced after coordination with Al3+ compared with other metal cations (i.e. Fe3+, Ni2+, Cd2+, Mn2+, Co2+, Zn2+, Hg2+, Ba2+, Mg2+ and K+) while o-methoxyl group-substituted one has no such phenomena, which might be due to the rotation of the uncoordinated C=N and C-O bonds in one side. The experimental process involved the reaction of 1,4-Dimethoxybenzene(cas: 150-78-7).Related Products of 150-78-7

The Article related to covalent organic framework fluorescence enhanced probe detect aluminum ion, Placeholder for records without volume info and other aspects.Related Products of 150-78-7

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Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

On June 18, 2019, Wei, Kajia; Cao, Xiaoxin; Gu, Wancong; Liang, Peng; Huang, Xia; Zhang, Xiaoyuan published an article.HPLC of Formula: 321-28-8 The title of the article was Ni-Induced C-Al2O3-Framework (NiCAF) Supported Core-Multishell Catalysts for Efficient Catalytic Ozonation: A Structure-to-Performance Study. And the article contained the following:

During catalytic ozonation, Al2O3-supported catalysts usually have stable structures but relatively low surface activity, while carbon-supported catalysts are opposite. To encourage their synergisms, we designed a Ni-induced C-Al2O2-framework (NiCAF) and reinforced it with a Cu-Co bimetal to create an efficient catalyst (CuCo/NiCAF) with a core-multishell structure. The partial graphitization of carbon adjacent to Ni crystals formed a strong out-shell on the catalyst surface. The rate constant for total organic carbon removal of CuCo/NiCAF (0.172 ± 0.018 min-1) was 67% and 310% higher than that of Al2O3-supported catalysts and Al2O3 alone, resp. The metals on CuCo/NiCAF contributed to surface-mediated reactions during catalytic ozonation, while the embedded carbon enhanced reactions within the solid-liquid boundary layer and in the bulk solution Moreover, carbon embedment provided a 76% increase in ·OH-production efficiency and an 86% increase in organic-adsorption capacity compared to Al2O3-supported catalysts. During the long-term treatment of coal-gasification wastewater (∼5 m3 day-1), the pilot-scale demonstration of CuCo/NiCAF-catalyzed ozonation revealed a 120% increase in ozone-utilization efficiency (ΔCOD/ΔO3 = 2.12) compared to that of pure ozonation (0.96). These findings highlight catalysts supported on NiCAF as a facile and efficient approach to achieve both high catalytic activity and excellent structural stability, demonstrating that they are highly viable for practical applications. The experimental process involved the reaction of 1-Fluoro-2-methoxybenzene(cas: 321-28-8).HPLC of Formula: 321-28-8

The Article related to nickel carbon aluminum framework catalytic ozonation wastewater treatment, Placeholder for records without volume info and other aspects.HPLC of Formula: 321-28-8

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On August 1, 2021, Xu, Dongxiao; Cao, Ziyi; Ye, Zhuolin; Zhang, Hong; Wang, Lipeng; John, Matz; Dong, Pei; Gao, Shangpeng; Shen, Jianfeng; Ye, Mingxin published an article.Electric Literature of 91-16-7 The title of the article was Electrochemical oxidation of π-π coupling organic cathode for enhanced zinc ion storage. And the article contained the following:

Organic materials typically present low rate performance and limited cycling durability due to the structural destruction and dissolution during electrochem. processes, which greatly hinders their application as promising cathodes for aqueous rechargeable zinc-ion batteries (ZIBs). Here, a strategy of in situ electrochem. oxidation with π-π interaction coupling between graphene and 2,3,6,7,10,11-Hexahydroxytriphenylene (HHTP) stabilizes the composite structure, rendering it a very promising organic composite cathode (named as GH) for ZIBs. More explicitly, the hydroxyl groups of HHTP are in-situ electrochem. transformed into carbonyl groups to form the redox-active sites, in which π-π interactions with graphene urges the highly reversible coordination/incoordination between zinc ions and the GH cathode. Further, such a GH cathode shows a specific capacity of 225 mAh g-1 at 0.05 A g-1 with a high capacity retention of 90% at 10 A g-1 after 7000 cycles, demonstrating high rate and cycle stability are achieved during the discharge/charge process. Thereby, this work provides a novel strategy for engineering an organic composite cathode which corrects the low rate and unstable cycling property for effective use in ZIBs. The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).Electric Literature of 91-16-7

The Article related to enhanced zinc ion storage electrochem oxidation coupling organic cathode, Placeholder for records without volume info and other aspects.Electric Literature of 91-16-7

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Ether – Wikipedia,
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Ou, Guangchuan; Wang, Qiong; Zhou, Qiang; Wang, Xiaofeng published an article in 2021, the title of the article was Phenol derivatives as Co-crystallized templates to modulate trimesic-acid-based hydrogen-bonded organic molecular frameworks.COA of Formula: C8H10O2 And the article contains the following content:

Five host-guest trimesic-acid-based hydrogen-bonds framework compounds with different guests, namely [(TMA)4·(TMB)3] (1), [(TMA)2·(DMB)1.5] (2), [(TMA)6·(MP)] (3), [(TMA)·(EP)] (4) and [(TMA)·(PP)] (5) (TMA = trimesic acid, TMB = 1,3,5-trimethoxybenzene, DMB = 1,4- dimethoxybenzene, MP = 4-methoxyphenol, EP = 4-ethoxyphenol and PP = 4-propoxyphenol), were obtained through co-crystallization, and were characterized by elemental anal., IR spectroscopy anal., and thermogravimetric anal. The trimesic acid mols. comprise a hydrogen bonding six-membered cyclic host network that is found in a two-dimensional arrangement in compounds 1 and 2, and in a nine-fold interpenetrated three-dimensional structure in compound 3. In compounds 4 and 5, the trimesic acid and EP/PP mols. form a hydrogenbonded six-membered cyclic network, resulting in a one-dimensional chain structure through O-H…O hydrogen bonds. The experimental process involved the reaction of 1,4-Dimethoxybenzene(cas: 150-78-7).COA of Formula: C8H10O2

The Article related to phenol trimesic acid hydrogen bond organic mol framework crystallization, Placeholder for records without volume info and other aspects.COA of Formula: C8H10O2

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Ether – Wikipedia,
Ether | (C2H5)2O – PubChem