Author: Jessica.F

Anode Preparation Strategies for the Electrocatalytic Oxidation of Water Based on Strong Interactions between Multiwalled Carbon Nanotubes and Cationic Acetylammonium Pyrene Moieties in Aqueous Solutions was written by Koelewijn, Jacobus M.;Lutz, Martin;Detz, Remko J.;Reek, Joost N. H.. And the article was included in ChemPlusChem in 2016.Computed Properties of C18H11BrO The following contents are mentioned in the article:

A strategy is reported for the immobilization of iridium-based water oxidation catalyst 3 onto fluorine-doped tin oxide (FTO) anodes evaluated for the electrocatalytic oxidation of H₂O. The strategy is based on noncovalent π-π interactions between multiwalled carbon nanotubes (MWCNTs) and the cationic acetylammonium pyrene moiety (Pyr⁺) covalently attached to a NHC IrCp*Cl₂ catalytically active center (NHC=N-heterocyclic carbene, Cp*=C₅Me₅). The dispersive properties of the Pyr⁺ moiety in compound 3 leads to the formation of stable MWCNT dispersions in aqueous solutions In addition, the MWCNT/3 assembly shows activity in the Ce⁴⁺-driven oxidation of H₂O. FTO/MWCNT/3 anodes show increased current densities when used as a working electrode for the electrocatalytic oxidation of H₂O. At higher anodic polarizations initially high current densities were achieved; however, these currents prove to be non-sustained due to delamination and degradation of the catalytically active surface. The immobilization strategy is limited to applications below 1.4 V vs normal hydrogen electrode (NHE) as oxidation of the pyrene backbone is evident at higher potentials. This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5Computed Properties of C18H11BrO).

2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. One prominent application of synthetic organobromine compounds is the use of polybrominated diphenyl ethers as fire-retardants, and in fact fire-retardant manufacture is currently the major industrial use of the element bromine.Computed Properties of C18H11BrO

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

1-(Bromoacetyl)pyrene and its arsonium salt as novel photoinitiators for styrene polymerization was written by Mishra, Anuradha;Daswal, Swati. And the article was included in Journal of Applied Polymer Science in 2006.Category: bromides-buliding-blocks The following contents are mentioned in the article:

The photopolymerization of styrene (Sty) in DMSO induced by pyrene (Py), 1-acetylpyrene (AP), 1-(bromoacetyl) pyrene (BP), and 1-acetylpyrene tri-Ph arsonium bromide (APAS) was studied. Under all conditions used, Py was completely ineffective. Incorporation of a chromophoric (COMe) moiety introduces photoinitiating activity into Py. Introduction of Br into AP markedly accelerated the rate of UV irradiation-induced polymerization BP was further modified to its arsonium salt (APAS). The kinetics and mechanism of polymerization using BP and APAS as initiators were investigated in detail. The polymerization with BP followed nonideal kinetics (R_p ∞ [BP]^0.8 [Sty]^1.1) with respect to initiator concentration whereas ideal kinetics (R_p ∞ [APAS]^0.48 [Sty]^1.1) was observed when APAS was used as initiator. Degradative transfer is thought to be mainly responsible for this unusual kinetic behavior for the BP-Sty system. The kinetic data proved that BP was a more effective and faster initiator than APAS. In both the cases, the mechanism of polymerization was free radical as evident by the inhibiting effect of hydroquinone and ESR studies. IR and NMR spectra showed the atactic nature of the polystyrene. This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5Category: bromides-buliding-blocks).

2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. Many of the alkyl bromine derivatives are excellent alkylating agents since bromides are good leaving groups. Tribromides, like tetrabutylammonium tribromide, are used as a solid source of bromine. N-bromosuccimide (NBS) is used for the selective bromination of allylic bonds.Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

A novel composite based on pyrene thiazole grafted on graphene oxide:physico-chemical characterization and electrochemical investigations was written by Tudose, Madalina;Baratoiu-Carpen, Rodica D.;Anghel, Elena Maria;Voicescu, Mariana;Somacescu, Simona;Culita, Daniela C.;Hanganu, Anamaria;Kuncser, Andrei;Radoi, Antonio. And the article was included in Materials Chemistry and Physics in 2021.COA of Formula: C18H11BrO The following contents are mentioned in the article:

The authors report the obtaining of a new composite starting from pyrene thiazole, a compound certified by NMR and its covalent grafting on the surface of graphene oxide. Novel material was synthesized in two stages: the 1st involving transformation of carboxyl groups of graphene oxide into acid chlorides and the 2nd the amide reaction between acid chloride and amine group of pyrene thiazole (PTC). Numerous characterization methods were used to certify this material, such as: Raman spectroscopy, fluorescence, IR spectroscopy and XPS, SEM and TEM. Their results show the successful covalent functionalization of graphene oxide with pyrene thiazole through the formation of amide bonds. The electrochem. study consisted of evaluating the redox behavior of the C screen printed electrodes modified with the new composite (GO-PTC) using caffeic acid, as analyte. From anal. point of view, it is relevant to be able to quantify the presence of caffeic acid and for such reason the authors used as anal. method the square wave voltammetry. The GO-PTC modified C screen printed electrodes were able to detect the caffeic acid over more than one order of magnitude (linear working range: 0.005-0.1 mM) and GO-PTC modified electrodes can be considered promising for other anal. studies. This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5COA of Formula: C18H11BrO).

2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. For many applications, organobromides represent a compromise of reactivity and cost.COA of Formula: C18H11BrO

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Polymerization of n-butyl acrylate photoinitiated by 1-(bromoacetyl)pyrene and its arsonium salt was written by Mishra, Anuradha;Daswal, Swati. And the article was included in Journal of Macromolecular Science in 2006.Computed Properties of C18H11BrO The following contents are mentioned in the article:

A comparative study on the photoinitiating efficiency of pyrene (Py), 1-acetylpyrene (AP), 1-(bromoacetyl)pyrene (BP), and 1-acetylpyrene triphenylarsonium bromide (APAS) for polymerization of Bu acrylate (BA) was done. Exptl. investigation of the kinetics of free radical solution polymerization at 25±0.2°C using all four photoinitiators showed that pyrene was completely ineffective in initiating the polymerization under all conditions employed, whereas AP was able to initiate polymerization Incorporation of a bromo group into AP markedly accelerated the rate of UV-induced polymerization Further modification of the bromo derivative (BP) to its arsonium salt (APAS) produced a less effective initiator. The kinetics and mechanism of polymerization using BP and APAS as initiators have been investigated in detail. The polymerization with BP followed non-ideal kinetics (Rp∝[BP]^0.8 [BA]^0.98) with respect to initiator concentration, whereas ideal kinetics (Rp∝[APAS]^0.49 [BA]^1.07) was observed when APAS was used as an initiator. This unusual kinetic behavior for the BP-BA system can be interpreted in light of degradative transfer and the emergence of occlusion. The kinetic data proved that BP was a more effective and faster initiator than APAS. This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5Computed Properties of C18H11BrO).

2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. For many applications, organobromides represent a compromise of reactivity and cost.Computed Properties of C18H11BrO

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Synthesis and In Vitro Antiproliferative Activity of Thiazole-Based Nitrogen Mustards: The Hydrogen Bonding Interaction between Model Systems and Nucleobases was written by Laczkowski, Krzysztof Z.;Misiura, Konrad;Switalska, Marta;Wietrzyk, Joanna;Laczkowska, Angelika Baranowska;Fernandez, Berta;Paneth, Agata;Plech, Tomasz. And the article was included in Anti-Cancer Agents in Medicinal Chemistry in 2014.Related Products of 80480-15-5 The following contents are mentioned in the article:

Synthesis, characterization and investigation of antiproliferative activity of eight thiazole-based nitrogen mustard against human cancer cells lines (MV4-11, A549, HCT116 and MCF-7) and normal mouse fibroblast (BALB/3T3) are presented. Their structures were determined using NMR, FAB MS, HRMS and elemental analyses. Among the derivatives, 3a, 3b, 3e and 3h were found to exhibit high activity against human leukemia MV4-11 cells with IC50 values of 0.634-3.61 μg/mL. The cytotoxic activity of compound 3a against BALB/3T3 cells is up to 40 times lower than against cancer cell lines. Our data indicated also that compound 3e had very strong activity against MCF-7 and HCT116 with IC50 equal to 2.32 μg/mL and 2.81 μg/mL, resp. Their activity was similar to the activity of cis-platin, which is clin. used as anticancer drug in the treatment of human solid tumors. We also perform quantum chem. calculation of interaction and binding energies in complexes of model systems and 3e with DNA bases. Interaction of real drug 3e with guanine is much stronger than with the remaining nucleobases, and the strongest among all investigated complexes. Computer simulations were performed with ATP-binding domain and DNA-binding site of hTopoII. Compounds 3a-h were recognized as potential inhibitors of hTopoII. This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5Related Products of 80480-15-5).

2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents. Many of the alkyl bromine derivatives are excellent alkylating agents since bromides are good leaving groups. Tribromides, like tetrabutylammonium tribromide, are used as a solid source of bromine. N-bromosuccimide (NBS) is used for the selective bromination of allylic bonds.Related Products of 80480-15-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Elastomeric azo-polyurethanes containing fluorescent pyrene and their photo activity was written by Buruiana, Emil C.;Buruiana, Tinca;Zamfir, Mirela;Pohoata, Valentin;Donescu, Dan. And the article was included in Designed Monomers and Polymers in 2007.Application of 80480-15-5 The following contents are mentioned in the article:

Two bichromophoric polyetherurethanes with a small number of pyrene rings on the quaternary ammonium groups and photoisomerizable azobenzene chromophore attached to the soft (AzPUC-Py1) or hard segment (AzPUC-Py2) of the polymeric backbone were synthesized and characterized. The effect of polymer structure on the trans-cis and cis-trans photo(thermo)isomerization of azobenzene in thin films induced by UV light (λ = 365 nm) was studied using UV spectroscopy, and in every case the quality of sensitizer of the pyrene was not in evidence. Also, a better photochromic response in the film containing azobenzene in the polyether component compared to that induced of the same chromophore in the hard segment was registered. Properties in the solution and thin films were examined in relation with the fluorescence of pyrene mol. excited at λ_exc 335 nm. Results of the fluorescence study accompanied of a fluorescence quenching through N,N-diethylaniline (DEA) sustain that these polymers could be used for the detection of amines up to a concentration of 1.57 × 10^-3 mol/L (AzPUC-Py1) and 3.14 × 10^-3 mol/L (AzPUC-Py2), resp., in DMF solution Compared to the polymer solution, in the polymer film exposed to DEA-saturated vapors ∼30% monomer fluorescence quenching was found after 90 min. This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5Application of 80480-15-5).

2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. Many of the alkyl bromine derivatives are excellent alkylating agents since bromides are good leaving groups. Tribromides, like tetrabutylammonium tribromide, are used as a solid source of bromine. N-bromosuccimide (NBS) is used for the selective bromination of allylic bonds.Application of 80480-15-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The effect of iron catalyzed graphitization on the textural properties of carbonized cellulose: Magnetically separable graphitic carbon bodies for catalysis and remediation was written by Hoekstra, Jacco;Beale, Andrew M.;Soulimani, Fouad;Versluijs-Helder, Marjan;van de Kleut, Dirk;Koelewijn, Jacobus M.;Geus, John W.;Jenneskens, Leonardus W.. And the article was included in Carbon in 2016.Recommanded Product: 2-Bromo-1-(pyren-1-yl)ethanone The following contents are mentioned in the article:

Whereas pyrolysis of pristine microcrystalline cellulose spheres yields nonporous amorphous carbon bodies, pyrolysis of microcrystalline cellulose spheres loaded with iron salts leads to the formation of magnetically separable mesoporous graphitic carbon bodies. The microcrystalline cellulose spheres loaded with either iron(III) nitrate, ammonium iron(III) citrate or iron(III) chloride were pyrolyzed up to 800°. Temperature dependent x-ray diffraction anal. shows that the iron salts are transformed into iron oxide nanoparticles; their size and distribution are influenced by the anion of the iron salt. The iron oxide nanoparticles are subsequently carbothermally reduced by the amorphous carbon that is obtained from the pyrolysis of the microcrystalline cellulose. Next, the iron nanoparticles catalyze the conversion of the amorphous carbon to graphitic carbon nanostructures as shown with x-ray diffraction, electron microscopy and Raman spectroscopy. The extent of graphitization depends on the iron nanoparticle size. Nitrogen physisorption measurements show that this graphitization process introduces mesopores into the carbon bodies. The benefits of the properties of the resulting carbon bodies (ferromagnetic character, graphitic content, mesoporosity) are discussed in connection with applications in liquid-phase catalysis and remediation. This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5Recommanded Product: 2-Bromo-1-(pyren-1-yl)ethanone).

2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact. One prominent application of synthetic organobromine compounds is the use of polybrominated diphenyl ethers as fire-retardants, and in fact fire-retardant manufacture is currently the major industrial use of the element bromine.Recommanded Product: 2-Bromo-1-(pyren-1-yl)ethanone

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

New Deoxycholic Acid Derived Tyrosyl-DNA Phosphodiesterase 1 Inhibitors Also Inhibit Tyrosyl-DNA Phosphodiesterase 2 was written by Salomatina, Oksana V.;Dyrkheeva, Nadezhda S.;Popadyuk, Irina I.;Zakharenko, Alexandra L.;Ilina, Ekaterina S.;Komarova, Nina I.;Reynisson, Johannes;Salakhutdinov, Nariman F.;Lavrik, Olga I.;Volcho, Konstantin P.. And the article was included in Molecules in 2022.Product Details of 422560-40-5 The following contents are mentioned in the article:

A series of deoxycholic acid (DCA) amides containing benzyl ether groups on the steroid core were tested against the tyrosyl-DNA phosphodiesterase 1 (TDP1) and 2 (TDP2) enzymes. In addition, 1,2,4- and 1,3,4-oxadiazole derivatives were synthesized to study the linker influence between a para-bromophenyl moiety and the steroid scaffold. The DCA derivatives demonstrated promising inhibitory activity against TDP1 with IC₅₀ in the submicromolar range. Furthermore, the amides and the 1,3,4-oxadiazole derivatives inhibited the TDP2 enzyme but at substantially higher concentration Tryptamide I and para-bromoanilide II derivatives containing benzyloxy substituent at the C-3 position and non-substituted hydroxy group at C-12 on the DCA scaffold inhibited both TDP1 and TDP2 as well as enhanced the cytotoxicity of topotecan in non-toxic concentration in vitro. According to mol. modeling, ligand I was anchored into the catalytic pocket of TDP1 by one hydrogen bond to the backbone of Gly458 as well as by π-π stacking between the indolyl rings of the ligand and Tyr590, resulting in excellent activity. Therefore it could be concluded that these derivatives contributed to the development of specific TDP1 and TDP2 inhibitors for adjuvant therapy against cancer in combination with topoisomerase poisons. This study involved multiple reactions and reactants, such as 2-(4-Bromophenyl)-N-hydroxyacetimidamide (cas: 422560-40-5Product Details of 422560-40-5).

2-(4-Bromophenyl)-N-hydroxyacetimidamide (cas: 422560-40-5) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. In the pharmaceutical industry organo bromine derivatives are used as sedatives, vasodilators, antiseptic agents, and anticancer agents.Product Details of 422560-40-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Rhodium-Catalyzed C-H Activation of Phenacyl Ammonium Salts Assisted by an Oxidizing C-N Bond: A Combination of Experimental and Theoretical Studies was written by Yu, Songjie;Liu, Song;Lan, Yu;Wan, Boshun;Li, Xingwei. And the article was included in Journal of the American Chemical Society in 2015.SDS of cas: 80480-15-5 The following contents are mentioned in the article:

Rh(III)-catalyzed C-H activation assisted by an oxidizing directing group has evolved to a mild and redox-economic strategy for the construction of heterocycles. Despite the success, these coupling systems are currently limited to cleavage of an oxidizing N-O or N-N bond. Cleavage of an oxidizing C-N bond, which allows for complementary carbocycle synthesis, is unprecedented. α-Ammonium acetophenones with an oxidizing C-N bond were designed as substrates for Rh(III)-catalyzed C-H activation under redox-neutral conditions. The coupling with α-diazo esters afforded benzocyclopentanones, and the coupling with unactivated alkenes such as styrenes and aliphatic olefins gave ortho-olefinated acetophenoes. In both systems the reactions proceeded with a broad scope, high efficiency, and functional group tolerance. Also, efficient 1-pot coupling of diazo esters was realized starting from α-bromoacetophenones and triethylamine. The reaction mechanism for the coupling with diazo esters was studied by a combination of exptl. and theor. methods. In particular, three distinct mechanistic pathways were scrutinized by DFT studies, which revealed that the C-H activation occurs via a C-bound enolate-assisted concerted metalation-deprotonation mechanism and is rate-limiting. In subsequent C-C formation steps, the lowest energy pathway involves two rhodium carbene species as key intermediates. This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5SDS of cas: 80480-15-5).

2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. alpha-Bromoesters are employed in the Reformatsky reaction for the synthesis of beta-hydroxyesters. In the pharmaceutical industry organo bromine derivatives are used as sedatives, vasodilators, antiseptic agents, and anticancer agents.SDS of cas: 80480-15-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Direct in situ labeling of target drugs with a fluorophore probe to improve MALDI-MS detection sensitivity in micro-liter plasma was written by Li, Yi-Shan;Lu, Chi-Yu. And the article was included in Scientific Reports in 2019.Formula: C18H11BrO The following contents are mentioned in the article:

Nonsteroidal anti-inflammatory drugs (NSAIDs) are widely used for symptomatic relief from fever, inflammation, and chronic pain associated with a variety of human disorders. Long-term usage of these drugs can result in severe syndromes; hence, their dose should be controlled carefully and their side effects such as Stevens-Johnson syndrome, toxic epidermal necrolysis, phototoxicity, acute interstitial nephritis, gastrointestinal bleeding, cardiovascular diseases, and liver injury should be considered. Furthermore, the widely used combination of NSAIDs as over-the-counter (OTC) drugs with other drugs leads to adverse drug-drug interactions. Therefore, development of a throughput method to rapidly screen 20 NSAIDs in biol. samples is necessary to safeguard human health. In this work, we selected a suitable fluorophore probe coupled with in situ micro-labeling (<2 min) on stainless plate for the fast detection of NSAIDs in plasma samples at the micro-liter level (5μL) without complicated sample preparation and separation Every step undertaken in the protocol was also at the micro-liter level; thus, a small amount of blood collected from the human finger will suffice to determine the drug concentration in blood using the proposed method. Furthermore, the proposed method we developed was also matched the modern trends of green anal. chem. towards miniaturization of anal. methodologies. This study involved multiple reactions and reactants, such as 2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5Formula: C18H11BrO).

2-Bromo-1-(pyren-1-yl)ethanone (cas: 80480-15-5) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. The principal reactions for organobromides include dehydrobromination, Grignard reactions, reductive coupling, and nucleophilic substitution.Formula: C18H11BrO

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary