Tag: 100-200

On November 16, 2020, Kim, Saegun; Jeoung, Daeun; Kim, Kunyoung; Lee, Seok Beom; Lee, Suk Hun; Park, Min Seo; Ghosh, Prithwish; Mishra, Neeraj Kumar; Hong, Suckchang; Kim, In Su published an article.Application In Synthesis of 2-Methylanisole The title of the article was Site-Selective C-H Amidation of 2-Aryl Quinazolinones Using Nitrene Surrogates. And the article contained the following:

The site-selective modifications of quinazolinones constitute a pivotal topic in drug discovery and material science. Herein, we describe the rhodium(III)-catalyzed C-H amidation of 2-aryl quinazolin-4(3H)-ones with a range of nitrene surrogates including dioxazolones, organic azides, and N-methoxyamides. Complete site-selectivity and functional group tolerance are observed Notably, the large-scale reaction and late-stage functionalization highlight the synthetic potential of the developed protocol. Combined mechanistic investigations elucidate a plausible reaction mechanism of this process. The experimental process involved the reaction of 2-Methylanisole(cas: 578-58-5).Application In Synthesis of 2-Methylanisole

The Article related to aryl quinazolinone nitrene surrogate regioselective rhodium amidation, functionalized quinazolinone preparation, Heterocyclic Compounds (More Than One Hetero Atom): Pyrimidines and Quinazolines and other aspects.Application In Synthesis of 2-Methylanisole

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Hashimoto, Riichi; Hanaya, Kengo; Sugai, Takeshi; Higashibayashi, Shuhei published an article in 2022, the title of the article was 1,2-Rearrangement from o-Quinols to Multisubstituted Catechols via Retro Diels-Alder Reaction of o-Quinol Dimers.SDS of cas: 578-58-5 And the article contains the following content:

The 1,2-rearrangement of o-quinols has been a long-standing unsolved problem since 1958. Although the rearrangement is expected to be useful for syntheses of catechol derivatives, it is hampered by many competing reactions and has not been developed as a useful methodol. Here, authors succeeded in settling this problem by a first systematic thorough investigation, establishing the 1,2-rearrangement as a cascade reaction with a retro Diels-Alder reaction from o-quinol dimers. This is a useful strategy for syntheses of substituted catechols used as synthetic building blocks for bioactive compounds and material mols. o-Quinol dimers were synthesized by improved oxidative hydroxylation of substituted phenols followed by spontaneous Diels-Alder reaction. The dimers then underwent the retro Diels-Alder reaction to regenerate the o-quinols followed by 1,2-rearrangement under neutral heating conditions at an appropriate temperature depending on the migratory substituent, furnishing substituted catechols in good yields. The competing reactions such as an elimination of a substituent or α-ketol rearrangement were minimized by controlling the reaction temperature The experimental process involved the reaction of 2-Methylanisole(cas: 578-58-5).SDS of cas: 578-58-5

The Article related to quinol dimer catechol preparation regioselective, phenol hydroxylation retro diels alder rearrangement, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Alcohols and Thiols and other aspects.SDS of cas: 578-58-5

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Aleksandrova, Maiia I.; Ivanov, Alexander Yu.; Dilman, Alexander D.; Vasilyev, Aleksander V. published an article in 2019, the title of the article was Electrophilic Activation of 1-Aryl-3-bromo-2,2-difluoropropan-1-ones by Triflic Acid in Reactions with Arenes.SDS of cas: 321-28-8 And the article contains the following content:

The reactions of 1-aryl-3-bromo-2,2-difluoropropan-1-ones [Ar(CO)CF2CH2Br] with various arenes Ar’H in the superacid TfOH at room temperature for 1-7 h result in the formation of products of hydroarylation of the carbonyl group, 1,1-diaryl-3-bromo-2,2-difluoropropan-1-ols [ArAr’C(OH)CF2CH2Br], in yields up to 85 %. The reaction with benzene goes deeper and leads to 1-aryl-3-bromo-2,2-difluoro-1,1-diphenylpropanes [ArCPh2CF2CH2Br] in good yields. Mainly, the bromomethyl group (CH2Br) of starting ketones remains untouched under the superacidic conditions. Cationic intermediates of the reaction have been studied by means of NMR spectroscopy. Plausible reaction mechanism is discussed. The experimental process involved the reaction of 1-Fluoro-2-methoxybenzene(cas: 321-28-8).SDS of cas: 321-28-8

The Article related to arene ketone trifluoromethanesulfonic acid electrophilic aromatic substitution cation, alc preparation, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Alcohols and Thiols and other aspects.SDS of cas: 321-28-8

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On December 22, 2021, Rivero-Crespo, Miguel A.; Toupalas, Georgios; Morandi, Bill published an article.Category: ethers-buliding-blocks The title of the article was Preparation of Recyclable and Versatile Porous Poly(aryl thioether)s by Reversible Pd-Catalyzed C-S/C-S Metathesis. And the article contained the following:

Porous organic materials (polymers and COFs) have shown a number of promising properties; however, the lability of their linkages often limits their robustness and can hamper downstream industrial application. Inspired by the outstanding chem., mech. and thermal resistance of the 1D polymer polyphenylene sulfide (PPS), we have designed a new family of porous poly arylthioethers, synthesized via a mild Pd-catalyzed C-S/C-S metathesis-based method, that merges the attractive features common to porous polymers and PPS in a single material. In addition, the method is highly modular, allowing to easily introduce application-oriented functionalities in the materials for a series of environmentally relevant applications including metal capture, metal sensing and heterogeneous catalysis. Moreover, despite their extreme chem. resistance, the polymers can be easily recycled to recover the original monomers, offering an attractive perspective for their sustainable use. In a broader context, these results clearly demonstrate the untapped potential of emerging single-bond metathesis reactions in the preparation of new, recyclable materials. The experimental process involved the reaction of 2-Methoxynaphthalene(cas: 93-04-9).Category: ethers-buliding-blocks

The Article related to recyclable porous polyarylthioether preparation metathesis palladium catalyst, Chemistry of Synthetic High Polymers: Organic Condensation and Step Polymerization and other aspects.Category: ethers-buliding-blocks

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Kiliclar, Huseyin Cem; Altinkok, Cagatay; Yilmaz, Gorkem; Yagci, Yusuf published an article in 2021, the title of the article was Visible light induced step-growth polymerization by electrophilic aromatic substitution reactions.Reference of 1,4-Dimethoxybenzene And the article contains the following content:

A novel visible light induced step-growth polymerization to form poly(phenylene methylene) by electrophilic aromatic substitution reactions is described. The effect of different nucleophilic aromatic mols. on polymerization has been investigated. The possibility of combining step-growth polymerization with conventional free radical and free radical promoted cationic polymerizations through photoinduced chain-end activation has been demonstrated. Highly fluorescent fibers of the resulting block copolymers were obtained using the electrospinning technique. The versatile photoinduced step-growth polymerization process reported herein paves the way for a new generation of polycondensates and their combination with chain polymers that cannot be obtained by conventional methods. The experimental process involved the reaction of 1,4-Dimethoxybenzene(cas: 150-78-7).Reference of 1,4-Dimethoxybenzene

The Article related to electrophilic aromatic substitution visible light step growth polymerization, Chemistry of Synthetic High Polymers: Organic Condensation and Step Polymerization and other aspects.Reference of 1,4-Dimethoxybenzene

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Li, Zheng; Li, Lu; Wang, Yan; Yang, Ying-Wei published an article in 2021, the title of the article was Pillararene-enriched linear conjugated polymer materials with thiazolo[5,4-d]thiazole linkages for photocatalysis.Recommanded Product: 1,4-Dimethoxybenzene And the article contains the following content:

A heteroatom-doped conjugated polymer with tunable bandgap is synthesized using pillararenes as the electron-rich C2 sym. nodes and thiazolo[5,4-d]thiazole as the electron-deficient linkage. The influence of pillararenes in regulating the band structure and photogenerated charge carrier transportation for photocatalytic environmental contaminant degradation was revealed. The experimental process involved the reaction of 1,4-Dimethoxybenzene(cas: 150-78-7).Recommanded Product: 1,4-Dimethoxybenzene

The Article related to pillararene linear conjugated polymer polybenzothiazole photocatalysis, Chemistry of Synthetic High Polymers: Organic Condensation and Step Polymerization and other aspects.Recommanded Product: 1,4-Dimethoxybenzene

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On December 1, 2020, Solomonov, Boris N.; Yagofarov, Mikhail I. published an article.Synthetic Route of 91-16-7 The title of the article was An approach for the calculation of vaporization enthalpies of aromatic and heteroaromatic compounds at 298.15 K applicable to supercooled liquids. And the article contained the following:

An approach for the calculation of the vaporization enthalpies of aromatic and heteroaromatic compounds at T = 298.15 K with accuracy competitive with experiment was proposed. The vaporization enthalpies may be calculated from the solution enthalpies of liquid and solvation enthalpies in benzene. The solution enthalpies of liquids were shown to be constant within a given type of aromatic compounds For a set of 67 liquid and 41 solid aromatic and heteroaromatic compounds not capable of intermol. hydrogen bonding, it was exptl. demonstrated that the solution enthalpies of liquids or supercooled liquids in benzene were equal to 1 ± 1 kJ·mol-1. The way to consider intermol. hydrogen bonding, e.g., in phenol, aniline, pyrrole derivatives, was also proposed. The methods for solvation enthalpy calculation were proposed previously. The calculated and literature vaporization enthalpies values of 415 aromatic and heteroaromatic compounds were compared. Average absolute deviation amounted to 1.3 kJ·mol-1. The proposed approach is especially valuable for calculation of the vaporization enthalpies of low-volatile compounds, including those solid at T = 298.15 K. The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).Synthetic Route of 91-16-7

The Article related to aromatic heteroaromatic compound supercooled liquid vaporization enthalpy calculation, Phase Equilibriums, Chemical Equilibriums, and Solutions: Nonelectrolytic Solutions and other aspects.Synthetic Route of 91-16-7

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On September 30, 2021, Xu, Wenqi; Wei, Lei; Wang, Zhengxin; Zhu, Ruixue; Jiang, Jiaming; Liu, Huiyan; Du, Juan; Weng, Tsu-Chien; Zhang, Yue-Biao; Huang, Yifan; Liu, Weimin published an article.Category: ethers-buliding-blocks The title of the article was Tracking Ultrafast Fluorescence Switch-On and Color-Tuned Dynamics in Acceptor-Donor-Acceptor Chromophore. And the article contained the following:

Understanding how the conformational change of conjugated mols. with acceptor-donor-acceptor (A-D-A) architecture affects their phys. and optoelectronic properties is critical for determining their ultimate performance in organic electronic devices. Femtosecond-transient absorption, time-resolved upconversion luminescence spectroscopy, and tunable femtosecond-stimulated Raman spectroscopy, aided by quantum chem. calculations, was used systematically study the excited state structural dynamics of the intramol. charge transfer of the tetramethoxy anthracene-based fluorophore 2,3,6,7-tetramethoxy-9,10-dibenzaldehydeanthracene (AnDA) and its derivative 2,3,6,7-tetramethoxy-9,10-diphenylanthracene (TMDPAn) in CHCl3. In the AnDA mol., the tetramethoxy anthracene and benzaldehyde moieties exhibit a strong ability to donate and withdraw electrons. Upon photoexcitation, AnDA shows intriguing ultrafast fluorescence switch-on and red shift dynamics on charge transfer states, and the temporal evolution of AnDA recorded by ultrafast spectroscopy reveals a dynamic picture of 2-step intramol. charge transfer assisted by ultrafast conformational changes and solvation processes. Removing the aldehyde group from TMDPAn significantly decreases the electron pulling capacity of the Ph unit and disables charge transfer characteristics. The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).Category: ethers-buliding-blocks

The Article related to ultrafast fluorescence switching color tuned dynamics acceptor donor chromophore, Optical, Electron, and Mass Spectroscopy and Other Related Properties: Luminescence and other aspects.Category: ethers-buliding-blocks

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On October 5, 2022, Zhang, Xuepeng; Liu, Junkai; Chen, Biao; He, Xuewen; Li, Xueyu; Wei, Peifa; Gao, Peng Fei; Zhang, Guoqing; Lam, Jacky W. Y.; Tang, Ben Zhong published an article.Synthetic Route of 150-78-7 The title of the article was Highly efficient and persistent room temperature phosphorescence from cluster exciton enables ultrasensitive off-on VOC sensing. And the article contained the following:

Room temperature phosphorescence (RTP) materials have attracted wide attention due to their application potential in sensing, data-encryption, bioimaging, and optoelectronic devices. However, improving RTP efficiency and lifetime simultaneously in metal-free systems remains the biggest challenge for realizing their applications. Herein, by exploiting long-lifetime triplets of naphthalene (NL) and intersystem crossing (ISC)-promoting factors from 1,4-dichlorobenzene (DCB), we unveil a guest/host system (NL/DCB) with concurrently high RTP quantum yield of >20% and ultralong lifetime of >760 ms (duration ∼10 s) at ambient conditions. Based on systematic exptl. and theor. investigations, the underlying mechanism for efficient RTP of NL/DCB is mainly elucidated to be the formation of cluster excitons that boost ISC and triplet population of NL mols. Meanwhile, we showcase the first example of fast and ultrasensitive detection of a common hazardous VOC via turning on its ultralong afterglow by using NL/DCB RTP, opening another avenue for practical applications of purely organic phosphorescence. The experimental process involved the reaction of 1,4-Dimethoxybenzene(cas: 150-78-7).Synthetic Route of 150-78-7

The Article related to naphthalene dichlorobenzene luminescent property density functional theory, Optical, Electron, and Mass Spectroscopy and Other Related Properties: Luminescence and other aspects.Synthetic Route of 150-78-7

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On November 17, 2020, Yang, Hai-Long; Li, Zhao-Hui; Liu, Pei-Pei; Sun, Xiao-Wen; Wang, Zhong-Hui; Yao, Hong; Zhang, You-Ming; Wei, Tai-Bao; Lin, Qi published an article.Related Products of 150-78-7 The title of the article was Metal-Free White Light-Emitting Fluorescent Material Based on Simple Pillar[5]arene-tripodal Amide System and Theoretical Insights on Its Assembly and Fluorescent Properties. And the article contained the following:

The booming of host-guest assembly-based supramol. chem. provides abundant ways to construct functional systems and materials. Attracted by the important application prospect of white light emission and aggregation-induced emission (AIE) materials, herein, we report an efficient way for fabricating metal-free white light-emitting AIE materials through the supramol. assembly of simple organic compounds: methoxyl pillar[5]arene (MP5) and tri-(pyridine-4-ylamido)benzene (TAP). By host-guest assembly, MP5 and TAP formed a supramol. polymer (MP5-T); meanwhile, the MP5-T xerogel powder emitted white light at CIE coordinates (0.29 and 0.29). The supramol. assembly and white light-emitting mechanisms were carefully investigated by experiments as well as quantum chem. calculations including d. functional theory (DFT), reduced d. gradient, electrostatic surface potential, independent gradient model, and frontier MO (highest-occupied MO-lowest-unoccupied MO) analyses. Interestingly, according to the experiments and calculations, the supramol. assembly is critical in the white light-emitting phenomenon. Moreover, in this work, the quantum chem. calculations could not only support exptl. phenomena but also provide deep understanding and visualized presentation of the assembly and emission mechanism. In addition, the obtained MP5-T solid powder could serve as a novel and easy means to make material for white light-emitting devices. The experimental process involved the reaction of 1,4-Dimethoxybenzene(cas: 150-78-7).Related Products of 150-78-7

The Article related to metal free white light emitting fluorescence based simple pillar, Optical, Electron, and Mass Spectroscopy and Other Related Properties: Luminescence and other aspects.Related Products of 150-78-7

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Ether – Wikipedia,
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