Tag: 300-400

Chen, Da; Hao, Shiqiang; Fan, Liubing; Guo, Yangwu; Yao, Jiyong; Wolverton, Christopher; Kanatzidis, Mercouri G.; Zhao, Jing; Liu, Quanlin published their research in Chemistry of Materials in 2021. The article was titled 《Broad Photoluminescence and Second-Harmonic Generation in the Noncentrosymmetric Organic-Inorganic Hybrid Halide (C6H5(CH2)4NH3)4MX7·H2O (M = Bi, In, X = Br or I)》.SDS of cas: 13465-09-3 The article contains the following contents:

Recent discoveries in organic-inorganic metal halides reveal superior semiconducting and polarization properties. Herein, we report three organic-inorganic metal halides, (PBA)4BiBr7·H2O, (PBA)4BiI7·H2O, and (PBA)4InBr7·H2O [(PBA)+ = C6H5(CH2)4NH3+], with band gaps of ~3.52, ~2.29, and ~4.05 eV, resp. They possess zero-dimensional structures containing the inorganic octahedra [MX6]3- (M = Bi, In, X = Br, I) and unbound X- ions and crystallize in the C2 space group. (PBA)4BiI7·H2O shows a second-harmonic-generation (SHG) response in the IR region, approx. 1.3 times that of AgGaS2; (PBA)4BiBr7·H2O and (PBA)4InBr7·H2O show SHG responses in the UV region, approx. 0.4 and 0.6 times that of KH2PO4, resp. The large SHG responses are attributed to the synergistic contribution of the octahedral distortion of [MX6]3- (M = Bi, In, X = Br, I) and the ordered arrangement of the benzene ring-containing organic cation PBA+. Upon UV and visible-light excitations at room temperature, (PBA)4BiBr7·H2O, (PBA)4BiI7·H2O, and (PBA)4InBr7·H2O exhibit broad red-light luminescence with large Stokes shifts of 290, 237, and 360 nm, resp., due to self-trapped exciton emission. All of these properties demonstrate that this series of metal halides are potential multifunctional optoelectronic materials. The experimental part of the paper was very detailed, including the reaction process of Indium(III) bromide(cas: 13465-09-3SDS of cas: 13465-09-3)

Indium(III) bromide(cas: 13465-09-3) is used in organic synthesis as a water tolerant Lewis acid. It efficiently catalyzes the three-component coupling of β-keto esters, aldehydes and urea (or thiourea) to afford the corresponding dihydropyrimidinones.SDS of cas: 13465-09-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Zhang, Jian; Mu, Keman; Yang, Peng; Feng, Xinqian; Zhang, Di; Fan, Xiangyu; Wang, Qiantao; Mao, Shengjun published their research in Bioorganic Chemistry in 2021. The article was titled 《Synthesis, antiepileptic effects, and structure-activity relationships of α-asarone derivatives: In vitro and in vivo neuroprotective effect of selected derivatives》.SDS of cas: 1530-32-1 The article contains the following contents:

In the present study, we compared the antiepileptic effects of α-asarone derivatives to explore their structure-activity relationships using the PTZ-induced seizure model. Our research revealed that electron-donating methoxy groups in the 3,4,5-position on Ph ring increased antiepileptic potency but the placement of other groups at different positions decreased activity. Besides, in allyl moiety, the optimal activity was reached with either an allyl or a 1-butenyl group in conjugation with the benzene ring. The compounds 5 (I) and 19 (II) exerted better neuroprotective effects against epilepsy in vitro (cell) and in vivo (mouse) models. This study provides valuable data for further exploration and application of these compounds as potential anti-seizure medicines. In addition to this study using Ethyltriphenylphosphonium bromide, there are many other studies that have used Ethyltriphenylphosphonium bromide(cas: 1530-32-1SDS of cas: 1530-32-1) was used in this study.

Ethyltriphenylphosphonium bromide(cas: 1530-32-1) is a phase transfer catalyst, used to accelerate the cure of phenolic-based epoxy resins, certain fluoroelastomer resins and thermosetting powder coatings. It is also used as catalysts in the synthesis of certain organic compounds and as a pharmaceutical intermediate.SDS of cas: 1530-32-1

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Synthesis of conjugated polymers via cyclopentannulation reaction: Promising materials for iodine adsorption》 was published in Polymer Chemistry in 2020. These research results belong to Baig, Noorullah; Shetty, Suchetha; Al-Mousawi, Saleh; Alameddine, Bassam. Application of 523-27-3 The article mentions the following:

A new class of conjugated polymers is prepared by means of a versatile palladium-catalyzed cyclopentannulation reaction using a series of specially designed diethynyl aryl synthons with the com. available 9,10-dibromoanthracene DBA monomer. The target polymers, CPP1-3, display high solubility and excellent chem. stability, which allow their structural and photophys. characterization by various instrumental anal. techniques such as gel permeation chromatog. (GPC), and 1H- and 13C-NMR, Fourier transform IR, UV-vis absorption, and emission spectroscopy. GPC chromatograms of CPP1-3 display a high relative weight-average (Mw) mol. weight in the range of 15.8 to 34.3 kDa with a polydispersity index (D = Mw/Mn) of ~2.5. Investigation of the iodine adsorption properties of CPP1-3 reveals their high uptake, namely ~200 wt% for CPP2, whose sorption property was sustained even after its reuse several times.9,10-Dibromoanthracene(cas: 523-27-3Application of 523-27-3) was used in this study.

9,10-Dibromoanthracene(cas: 523-27-3) can be sublimated and oxidized to generate anthraquinone. Soluble in hot benzene and hot toluene, slightly soluble in alcohol, ether and cold benzene, insoluble in water.Application of 523-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Related Products of 523-27-3In 2020 ,《Mechanochemical generation of singlet oxygen》 was published in RSC Advances. The article was written by Turksoy, Abdurrahman; Yildiz, Deniz; Aydonat, Simay; Beduk, Tutku; Canyurt, Merve; Baytekin, Bilge; Akkaya, Engin U.. The article contains the following contents:

Controlled generation of singlet oxygen is very important due to its involvement in scheduled cellular maintenance processes and therapeutic potential. As a consequence, precise manipulation of singlet oxygen release rates under mild conditions, is crucial. In this work, a cross-linked polyacrylate, and a polydimethylsiloxane elastomer incorporating anthracene-endoperoxide modules with chain extensions at the 9,10-positions were synthesized. We now report that on mech. agitation in cryogenic ball mill, fluorescence emission due to anthracene units in the PMA (polymethacrylate) polymer is enhanced, with a concomitant generation of singlet oxygen as proved by detection with a selective probe. The PDMS (polydimethylsiloxane) elastomer with the anthracene endoperoxide mechanophore, is also similarly sensitive to mech. force. In the part of experimental materials, we found many familiar compounds, such as 9,10-Dibromoanthracene(cas: 523-27-3Related Products of 523-27-3)

9,10-Dibromoanthracene(cas: 523-27-3) is a dibrominated polycyclic aromatic hydrocarbon (PAH). 9,10-Dibromoanthracene is often used as an energy acceptor and activator in reactions that produce chemiluminescence.Related Products of 523-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Fan, Chaochao; Wang, Yue; Zhao, Jie; Zhao, Yanxia; Yang, Dong; Li, Boyang; Yu, Le; Yang, Xiao-Juan; Wu, Biao published an article in Inorganic Chemistry. The title of the article was 《Reversible [4 + 2] Photooxygenation in Anion-Coordination-Driven-Assembled A2L2-Type Complexes》.Category: bromides-buliding-blocks The author mentioned the following in the article:

Two bis-bis(urea) ligands (L1 and L2) incorporating the photoactive 9,10-diphenylanthracene fragment were designed for the construction of anion-coordination-driven assemblies and subsequent oxygenation of anthracene moieties for singlet oxygen storage. The corresponding A2L2-type sulfate complexes [TEA]4[(SO4)2(L1)2] (1) and [TEA]4[(SO4)2(L2)2] (2), where TEA = tetraethylammonium, were achieved by coordinating the ligands L1 or L2 with sulfate anions. Both 1 and 2 were able to undergo [4 + 2] photooxygenation to form endoperoxide photoproducts and , which can be partially converted back to the original anthracene compounds after heating. The structures of 1-EPO and 2-EPO were unambiguously confirmed by x-ray crystallog., NMR and UV-vis spectroscopy, and high-resolution electrospray ionization mass spectrometry. The results came from multiple reactions, including the reaction of 9,10-Dibromoanthracene(cas: 523-27-3Category: bromides-buliding-blocks)

9,10-Dibromoanthracene(cas: 523-27-3) is synthesized by the bromination of anthracene. The bromination reaction is carried out at room temperature using carbon tetrachloride as a solvent. Using 80-85% anthracene as raw material, adding bromine to react for half an hour, the yield is 83-88%.Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Suzuki, Itaru; Takenaka, Yuya; Morishita, Yoshitaka; Shibata, Ikuya published an article in Chemistry Letters. The title of the article was 《One-step Preparation of N-Unprotected Aziridines from 2H-Azirines by Addition of Ketene Silyl Acetals Catalyzed by Lewis Acids》.Safety of Indium(III) bromide The author mentioned the following in the article:

The nucleophilic addition of ketene silyl acetals 2 into 2H-azirines 1 proceeded in the presence of Lewis acids such as InX3 or Sc(OTf)3 to give N-unprotected aziridines 3. The mild Lewis acidity of the catalyst is important for the achievement of this coupling. The generated aziridine 3 could then be transformed into either oxazolines or γ-amino carbonyls. In addition to this study using Indium(III) bromide, there are many other studies that have used Indium(III) bromide(cas: 13465-09-3Safety of Indium(III) bromide) was used in this study.

Indium(III) bromide(cas: 13465-09-3) is used as a catalyst to produce dithioacetals when unactivated alkynes react with thiols and fields such as optics and microelectronics that utilize semiconductor technology have wide uses for indium in high-performing solar cells.Safety of Indium(III) bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Noten, Efrey A.; McAtee, Rory C.; Stephenson, Corey R. J. published an article in Chemical Science. The title of the article was 《Catalytic intramolecular aminoarylation of unactivated alkenes with aryl sulfonamides》.Recommanded Product: 1530-32-1 The author mentioned the following in the article:

In this work, an intramol. alkene aminoarylation cascade that exploits the electrophilicity of a nitrogen-centered radical to form a C-N bond, then repurposes the nitrogen atom’s sulfonyl activating group as a traceless linker to form a subsequent C-C bond was disclosed. This photoredox catalysis protocol enabled the preparation of densely substituted arylethylamines I [R1 = H, Me; R2 = H, Me, i-Pr, BrCH2CH2, Ph; R1R2 = H2COCH2, (CH2C)3, (CH2C)5; R3= 2-pyridyl, 2,6-di-FC6H3, 2,4,6-tri-ClC6H2, etc.] from com. abundant aryl sulfonamides and unactivated alkenes under mild conditions. Reaction optimization, scope, mechanism, and synthetic applications were discussed. In the experiment, the researchers used many compounds, for example, Ethyltriphenylphosphonium bromide(cas: 1530-32-1Recommanded Product: 1530-32-1)

Ethyltriphenylphosphonium bromide(cas: 1530-32-1) is a phase transfer catalyst, used to accelerate the cure of phenolic-based epoxy resins, certain fluoroelastomer resins and thermosetting powder coatings. It is also used as catalysts in the synthesis of certain organic compounds and as a pharmaceutical intermediate.Recommanded Product: 1530-32-1

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Guo, Sheng-Qiang; Yang, Hui-Qing; Jiang, Yu-Zhen; Wang, Ai-Lian; Xu, Guo-Qiang; Luo, Yong-Chun; Chen, Zhao-Xu; Zheng, Haixue; Xu, Peng-Fei published an article in 2022. The article was titled 《Organophotoredox catalytic four-component radical-polar crossover cascade reactions for the stereoselective synthesis of β-amido sulfones》, and you may find the article in Green Chemistry.Electric Literature of C20H20BrP The information in the text is summarized as follows:

Herein, a green and reliable strategy for the diastereoselective synthesis of β-amido sulfones R1S(O)2CH(R2)CH(Ar)NHC(O)R3 (R1 = Me, 4-methylphenyl, naphth-2-yl, etc.; R2 = H, Me, Et, Pr, isopropyl; Ar = Ph, 3,4-dichlorophenyl, naphth-2-yl, etc.; R3 = Me, cyclopopyl, Ph, etc.) and I through organophotoredox catalytic four-component radical-polar crossover cascade reactions was reported. This transformation features excellent atom-, step-, and redox economy and diastereoselectivity. Moreover, DFT calculation studies were performed to provide some insights into the origin of diastereoselectivity. In addition to this study using Ethyltriphenylphosphonium bromide, there are many other studies that have used Ethyltriphenylphosphonium bromide(cas: 1530-32-1Electric Literature of C20H20BrP) was used in this study.

Ethyltriphenylphosphonium bromide(cas: 1530-32-1) is a phase transfer catalyst, used to accelerate the cure of phenolic-based epoxy resins, certain fluoroelastomer resins and thermosetting powder coatings. It is also used as catalysts in the synthesis of certain organic compounds and as a pharmaceutical intermediate.Electric Literature of C20H20BrP

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Doerr, Alicia M.; Curry, Matthew R.; Chapleski, Robert C.; Burroughs, Justin M.; Lander, Elizabeth K.; Roy, Sharani; Long, Brian K. published an article on January 7 ,2022. The article was titled 《Redox Potential as a Predictor of Polyethylene Branching Using Nickel α-Diimine Catalysts》, and you may find the article in ACS Catalysis.HPLC of Formula: 111865-47-5 The information in the text is summarized as follows:

The ability to control polyethylene branching d. is of great interest as a means by which a polymer’s thermomech. properties may be tailored. One particularly interesting way in which this can be achieved is by altering the electronic characteristics of Pd- and Ni-based α-diimine catalysts through the inclusion of electron-withdrawing or electron-donating substituents onto the ligand scaffold; however, a few critical fundamental studies are absent from the literature. These include a systematic examination of electronic perturbations of Ni-based α-diimine catalysts, as well as how placement of donating or withdrawing substituents on the backbone vs. N-aryl moieties of the α-diimine ligand framework impact polymer topol. In addition, no method currently exists by which the polymer topol. may be predicted based on an intrinsic characteristic of the (pre)catalyst or ligand without requiring extensive polymerization studies. Herein, the authors use both exptl. and computational methods to understand how the placement of electron-donating or electron-withdrawing substituents on Ni α-diimine catalysts affects PE branching d., and compare those results to the analogous unsubstituted catalyst. Inclusion of electron-withdrawing substituents decreases resultant PE branching d., whereas electron-donating substituents exhibit little to no change in PE branching d. Finally, as the placement and identity of donating or withdrawing substituents are varied, so too is the redox half-wave potential (E1/2) of the precatalysts, which can be used to generate a predictive curve by which PE branching d. may be estimated for other substituted Ni-based α-diimine catalysts without the need for extensive polymerization studies.Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide(cas: 111865-47-5HPLC of Formula: 111865-47-5) was used in this study.

Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide(cas: 111865-47-5) 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. Moreover, several studies demonstrate that the average proportion of bromine in drugs is significantly higher than that in natural products. HPLC of Formula: 111865-47-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

HPLC of Formula: 1779-49-3In 2019 ,《A transition-metal-free & diazo-free styrene cyclopropanation》 was published in Chemical Science. The article was written by Herraiz, Ana G.; Suero, Marcos G.. The article contains the following contents:

Synthesis of wide range of substituted cyclopropanes, e.g., I, via operationally simple and broadly applicable novel cyclopropanation of styrenes using gem-diiodomethyl carbonyl reagents was developed. Visible-light triggered the photoinduced generation of iodomethyl carbonyl radicals, able to cyclopropanate a wide array of styrenes with excellent chemoselectivity and functional group tolerance. To highlight the utility of photocyclopropanation, demonstrated the late-stage functionalization of biomol. derivatives The results came from multiple reactions, including the reaction of Methyltriphenylphosphonium bromide(cas: 1779-49-3HPLC of Formula: 1779-49-3)

Methyltriphenylphosphonium bromide(cas: 1779-49-3) is a lipophilic molecule with a cation allowing for it to be used to deliver molecules to specific cell components. Also considered an antineoplastic agent.HPLC of Formula: 1779-49-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary