Tag: 200-300

《High-performance Li-organic battery based on thiophene-containing porous organic polymers with different morphology and surface area as the anode materials》 was written by Xu, Ning; Mei, Shiwei; Chen, Zhangxin; Dong, Yujie; Li, Weijun; Zhang, Cheng. Application of 3141-27-3 And the article was included in Chemical Engineering Journal (Amsterdam, Netherlands) in 2020. The article conveys some information:

It is the hot issue for Li-organic battery that whether the higher sp. surface area of the porous organic polymers as the electrode materials can benefit to the better battery performance. In this article, the conjugated polymer based on star-shaped benzene-thiophene structure (pBHT) and benzene-ethynyl-thiophene structure (pBAT and pBABT) were designed and successfully prepared The pBHT polymer exhibits the unique stacked hollow tube morphol. and possesses the high surface area (∼ 1139 m2/g), while the polymers pBAT and pBABT both display the macroporous morphol. with the low surface area (32.5 and 12.5 m2/g). Being explored for the battery performance as anode materials, the pBHT electrode exhibits a very low discharge capacity (< 100 mAh g-1) and poor cycle′s stability. In contrast, the pBABT electrode with very low surface area of only 12.5 m2/g displays the higher discharge capacity (442 mAh g-1 at 500 mA/g of the second cycle), excellent stability (401 mAh g-1 at 500 mA/g of the 1000 cycles) and higher rate capabilities. These uncommon electrochem. properties may be attributed to the unique hollow tube morphol. for the polymer pBHT, which limit the lithium ion released and might form ""dead lithium"", thus resulting in the collapse of polymer structures and difficult solid electrolyte interface formation, as well as the fast capacity fading and extremely low capacity according to the electrochem. behaviors and SEM measurements. EIS also confirm the uncommon electrochem. properties with the three polymer electrodes from the kinetics for charge carrier insertion/extraction the findings may offer a clue to explore the effect of sp. surface area and morphol. of polymer electrodes on the performance of LIBs when designing the high-performance electrode materials. In addition to this study using 2,5-Dibromothiophene, there are many other studies that have used 2,5-Dibromothiophene(cas: 3141-27-3Application of 3141-27-3) was used in this study.

2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene may be used as starting reagent for the synthesis of α,α′-didecylquater-, -quinque- and -sexi-thiophenes.Application of 3141-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Development of thiazolidinedione-based HDAC6 inhibitors to overcome methamphetamine addiction》 were Sharma, Chiranjeev; Oh, Yong Jin; Park, Byoungduck; Lee, Sooyeun; Jeong, Chul-Ho; Lee, Sangkil; Seo, Ji Hae; Seo, Young Ho. And the article was published in International Journal of Molecular Sciences in 2019. Computed Properties of C9H9BrO2 The author mentioned the following in the article:

Thiazolidinedione is a five-membered heterocycle that is widely used in drug discovery endeavors. In this study, we report the design, synthesis, and biol. evaluation of a series of thiazolidinedione-based HDAC6 inhibitors. In particular, compound 6b exerts an excellent inhibitory activity against HDAC6 with an IC50 value of 21 nM, displaying a good HDAC6 selectivity over HDAC1. Compound 6b dose-dependently induces the acetylation level of alpha-tubulin via inhibition of HDAC6 in human neuroblastoma SH-SY5Y cell line. Moreover, compound 6b efficiently reverses methamphetamine-induced morphol. changes of SH-SY5Y cells via regulating acetylation landscape of α-tubulin. Collectively, compound 6b represents a novel HDAC6-isoform selective inhibitor and demonstrates promising therapeutic potential for the treatment of methamphetamine addiction. The results came from multiple reactions, including the reaction of Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8Computed Properties of C9H9BrO2)

Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8) belongs to organobromine compounds.Organobromine chemicals are produced naturally by an array of biological and other chemical processes in our environment. Some of these compounds are identical to man-made organobromine compounds, such as methyl bromide, bromoform, and bromophenols, but many others are entirely new moleclar entities, often possessing extraordinary and important biological properties. Computed Properties of C9H9BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Journal of the American Chemical Society included an article by Sandford, Christopher; Fries, Lydia R.; Ball, Tyler E.; Minteer, Shelley D.; Sigman, Matthew S.. Computed Properties of C9H9BrO2. The article was titled 《Mechanistic Studies into the Oxidative Addition of Co(I) Complexes: Combining Electroanalytical Techniques with Parameterization》. The information in the text is summarized as follows:

The oxidative addition of organic electrophiles into electrochem. generated Co(I) complexes has been widely utilized as a strategy to produce carbon-centered radicals when cobalt is ligated by a polydentate ligand. Changing to a bidentate ligand provides the opportunity to access discrete Co(III)-C bonded complexes for alternative reactivity, but knowledge of how ligand and/or substrate structures affect catalytic steps is pivotal to reaction design and catalyst optimization. In this vein, exptl. studies that can determine the exact nature of elementary organometallic steps remain limited, especially for single-electron oxidative addition pathways. Herein, we utilize cyclic voltammetry combined with simulations to obtain kinetic and thermodn. properties of the two-step, halogen-atom abstraction mechanism, validated by analyzing kinetic isotope and substituent effects. Complex Hammett relationships could be disentangled to allow understanding of individual effects on activation energy barriers and equilibrium constants, and DFT-derived parameters used to build predictive statistical models for rates of new ligand/substrate combinations. In the experiment, the researchers used many compounds, for example, Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8Computed Properties of C9H9BrO2)

Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8) belongs to organobromine compounds.Organobromine chemicals are produced naturally by an array of biological and other chemical processes in our environment. Organobromine compounds are produced naturally by marine creatures (sponges, corals, sea slugs, tunicates, sea fans) and seaweed, plants, fungi, lichen, algae, bacteria, microbes, and some mammals. Computed Properties of C9H9BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Pucheault, Mathieu; Darses, Sylvain; Genet, Jean-Pierre published their research in Journal of the American Chemical Society on December 1 ,2004. The article was titled 《Direct access to ketones from aldehydes via rhodium-catalyzed cross-coupling reaction with potassium trifluoro(organo)borates》.Recommanded Product: 374564-34-8 The article contains the following contents:

A direct cross-coupling reaction of aromatic aldehydes with potassium trifluoro(organo)borates afforded diaryl ketones in high yields and under mild conditions in the presence of a rhodium catalyst and acetone. This reaction, involving a formal aldehyde C-H bond activation, is believed to proceed via a Heck-type mechanism followed by hydride transfer to acetone. In the experiment, the researchers used many compounds, for example, potassium (3-bromophenyl)trifluoroborate(cas: 374564-34-8Recommanded Product: 374564-34-8)

potassium (3-bromophenyl)trifluoroborate(cas: 374564-34-8) belongs to organobromine compounds.Organobromine chemicals are produced naturally by an array of biological and other chemical processes in our environment. Organobromine compounds are produced naturally by marine creatures (sponges, corals, sea slugs, tunicates, sea fans) and seaweed, plants, fungi, lichen, algae, bacteria, microbes, and some mammals. Recommanded Product: 374564-34-8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 1952,Journal of the American Chemical Society included an article by Erickson, J. L. E.; Dechary, J. M.; Pullig, T. R.. Synthetic Route of C7H4BrNO4. The article was titled 《Bromo-2-nitrobenzoic acids》. The information in the text is summarized as follows:

Synthetic methods of preparation for the 4 isomeric bromo-2-nitrobenzoic acids are described. 3-Bromo-2-nitrobenzoic acid was prepared by deamination of a new compound, 5-bromo-6-nitroanthranilic acid, m. 201-2.5° [from bromination of 6,2-O2N(H2N)C6H3CO2H]. The synthesis of 4-bromo-2-nitrobenzoic acid was accomplished by the hydrolysis of 4-bromo-2-nitrobenzonitrile and also by the oxidation of 4-bromo-2-nitrotoluene. 5-Bromo-2-nitrobenzoic acid was prepared by the nitration of m-bromobenzoic acid, an old method. 6-Bromo-2-nitrobenzoic acid, m. 177.3-7.5°, a new compound, was obtained in excellent yield from 6-nitroanthranilic acid. After reading the article, we found that the author used 3-Bromo-2-nitrobenzoic acid(cas: 116529-61-4Synthetic Route of C7H4BrNO4)

3-Bromo-2-nitrobenzoic acid(cas: 116529-61-4) belongs to organobromine compounds.Most of the natural organobromine compounds are produced by marine organisms , and several brominated metabolites with antibacterial , antitumor , antiviral , and antifungal activity have been isolated from seaweed, sponges, corals, molluscs, and others. Synthetic Route of C7H4BrNO4 Moreover, several studies demonstrate that the average proportion of bromine in drugs is significantly higher than that in natural products.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

COA of Formula: C4H2Br2SIn 2021 ,《Synthesis of thiophene-benzodithiophene wide bandgap polymer and GIWAXS evaluation of thermal annealing with potential for application in ternary polymer solar cells》 was published in Polymers for Advanced Technologies. The article was written by Rubio Arias, Jose Jonathan; Mota, Isabela Custodio; Vieira Marques, Maria De Fatima. The article contains the following contents:

Conjugated polymers are a special type of material responsible for light absorption in polymer solar cells. The absorption of these materials plays an important role in photon harvesting and energy conversion. Ternary organic solar cells are a type of OPV that combines two-electron donors with complementary absorption in a single layer. The present work deals with the synthesis and characterization of a high-bandgap polymer prepared through the alternation of two high-electron d. aromatic units (thiophene-benzodithiophene). This polymer presented high bandgap (2.1 eV) with potential for complementary absorption in a ternary device, as well as high Voc when applied in a single junction inverted OPV device in heterojunction with PC70BM (0.95 V), which agrees with the relatively large energy difference between its HOMO and the LUMO of PC70BM determined through CV and UV-vis. A dynamic GIWAXS study was performed and demonstrated that for this polymer, increasing annealing temperature to 80°C can increase its crystalline organization by up to 50%. In addition to this study using 2,5-Dibromothiophene, there are many other studies that have used 2,5-Dibromothiophene(cas: 3141-27-3COA of Formula: C4H2Br2S) was used in this study.

2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene polymerizes by debromination with magnesium catalyzed by nickel compounds to form poly(2,5- thienylene) .COA of Formula: C4H2Br2S

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Product Details of 626-40-4In 2018 ,《Dynamic or undynamic chirality generated by helical arrangement of a shape-persistent ring and rod doubly bridged in a molecule》 was published in Chemical Communications (Cambridge, United Kingdom). The article was written by Katoono, Ryo; Obara, Yudai; Kusaka, Keiichi; Suzuki, Takanori. The article contains the following contents:

We synthesized mol. assemblies of a ring and rod that were covalently bound in a mol. The bridged components were helically arranged in a threaded or unthreaded form to show unique chiroptical properties based on shape-persistent m-phenylacetylene rings with six, five and four units and phenylene-ethynylene rods. After reading the article, we found that the author used 3,5-Dibromoaniline(cas: 626-40-4Product Details of 626-40-4)

3,5-Dibromoaniline(cas: 626-40-4) belongs to anime.Typically the presence of an amine functional group is deduced by a combination of techniques, including mass spectrometry as well as NMR and IR spectroscopies. 1H NMR signals for amines disappear upon treatment of the sample with D2O. In their infrared spectrum primary amines exhibit two N-H bands, whereas secondary amines exhibit only one.Product Details of 626-40-4

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Yu, Shaoze; Shen, Guosong; He, Faqian; Yang, Xiaoyu published an article in Chemical Communications (Cambridge, United Kingdom). The title of the article was 《Asymmetric synthesis of planar-chiral macrocycles via organocatalyzed enantioselective macrocyclization》.Application of 17696-11-6 The author mentioned the following in the article:

A novel enantioselective macrocyclization method was developed for the asym. synthesis of planar-chiral macrocycles I [R1 = Br, C≡Ccyclopropyl, C≡CPh, etc.; R2 = Me, Et; R3 = Piv, C(O)CMe2Et; n = 0, 1, 2, 3, 4] through chiral phosphoric acid-catalyzed intramol. addition of the hydroxy group with the allenamide moiety. A series of planar-chiral macrocycles bearing various ring sizes (18-member to 22-member) and various functional groups were generated with good to high enantioselectivities. In the part of experimental materials, we found many familiar compounds, such as 8-Bromooctanoic acid(cas: 17696-11-6Application of 17696-11-6)

8-Bromooctanoic acid(cas: 17696-11-6) acid is used in the synthesis of 8-(N-Methyl-4,4′-bipyridinyl)- octanoic acid. 8-Mercaptooctanoic acid was prepared from 8-bromooctanoic acid.Application of 17696-11-6

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Kopf, Sara; Neumann, Helfried; Beller, Matthias published their research in Chemical Communications (Cambridge, United Kingdom) in 2021. The article was titled 《Manganese-catalyzed selective C-H activation and deuteration by means of a catalytic transient directing group strategy》.Name: Bromopentacarbonylmanganese(I) The article contains the following contents:

A novel manganese-catalyzed C-H activation methodol. for selective hydrogen isotope exchange of benzaldehydes was presented. Using D2O as a cheap and convenient source of deuterium, the reaction proceeded with excellent functional group tolerance. High ortho-selectivity was achieved in the presence of catalytic amounts of specific amines, which in situ form a transient directing group. The results came from multiple reactions, including the reaction of Bromopentacarbonylmanganese(I)(cas: 14516-54-2Name: Bromopentacarbonylmanganese(I))

Bromopentacarbonylmanganese(I)(cas: 14516-54-2) has many other uses. It is used in the formation of (eta6-arene)tricarbonylmanganese(I) by reacting with arene (arene= hexamethyl benzene, 1,2,4,5-tetramethyl benzene, mesitylene, p-xylene and toluene) in the presence silver salt.Name: Bromopentacarbonylmanganese(I)

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Xu, Ronghua; Gao, Zhenhua; Yu, Yiteng; Tang, Yehua; Tian, Duanshuai; Chen, Tian; Chen, Yibing; Xu, Guangqing; Shi, Enxue; Tang, Wenjun published their research in Chemical Communications (Cambridge, United Kingdom) in 2021. The article was titled 《A facile and practical preparation of P-chiral phosphine oxides》.Application In Synthesis of 1-Bromo-3,4,5-trimethoxybenzene The article contains the following contents:

A practical and cost-effective synthetic method of P-chiral diarylalkyl, aryldialkyl, and triaryl phosphine oxides by using readily available chiral diphenyl-2-pyrrolidinemethanol as the auxiliary is developed. The long-standing racemization issue during solvolysis has been addressed and well controlled by employing a suitable solvent, a low reaction temperature, and an appropriate reaction time. The experimental part of the paper was very detailed, including the reaction process of 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8Application In Synthesis of 1-Bromo-3,4,5-trimethoxybenzene)

1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8) is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff.Application In Synthesis of 1-Bromo-3,4,5-trimethoxybenzene1-Bromo-3,4,5-trimethoxybenzene can be used to synthesize N,N′-diarylated indolo[3,2-b]carbazole derivatives, which can find applications in electrophotography.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary