Tag: 300-400

Xiao, En-Kai; Wu, Xian-Tao; Ma, Feng; Feng, Xiaohua; Chen, Peng; Jiang, Yi-Jun published an article in 2021. The article was titled 《Fe(OTf)3- and γ-Cyclodextrin-Catalyzed Hydroamination of Alkenes with Carbazoles》, and you may find the article in Organic Letters.Safety of 3,6-Dibromo-9H-carbazole The information in the text is summarized as follows:

A Fe(OTf)3- and γ-cyclodextrin catalyzed hydroamination of alkenes with carbazoles is demonstrated. This biomimetic-catalyst-oriented sustainable and green method could deliver a wide scope of N-alkylated carbazoles and N-alkylated-carbazole-fused aromatics in up to 97% yield. The salient features of this transformation include simple and benign reaction conditions with no need for a strong base, additive, or the irradiation of light. In the experimental materials used by the author, we found 3,6-Dibromo-9H-carbazole(cas: 6825-20-3Safety of 3,6-Dibromo-9H-carbazole)

3,6-Dibromo-9H-carbazole(cas: 6825-20-3) is used as a pharmaceutical intermediate, and also an important intermediate of synthesizing optoelectronic materials. It has been used as a reagent in the synthesis of P7C3-A20 which is a potent neuroprotective agent.Safety of 3,6-Dibromo-9H-carbazole

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Meng, Xianwei; Chi, Kailin; Li, Qian; Feng, Bingtao; Wang, Haodi; Gao, Tianjiao; Zhou, Pengyu; Yang, Haibin; Fu, Wuyou published their research in Nanomaterials in 2021. The article was titled 《Fabrication of porous lead bromide films by introducing indium tribromide for efficient inorganic CsPbBr3 perovskite solar cells》.HPLC of Formula: 13465-09-3 The article contains the following contents:

In the process of preparing CsPbBr3 films by two-step or multi-step methods, due to the low solubility of CsBr in organic solvents, the prepared perovskite films often have a large number of holes, which is definitely not conducive to the performance of CsPbBr3 perovskite solar cells (PSCs). In response to this problem, this article proposed a method of introducing InBr3 into the PbBr2 precursor to prepare a porous PbBr2 film to increase the reaction efficiency between CsBr and PbBr2 and achieve the purpose of In (III) incorporation, which not only optimized the morphol. of the produced CsPbBr3 film but also enhanced the charge extraction and transport capabilities, which was ascribed to the reduction of the trap state d. and impurity phases in the perovskite films, improving the performance of CsPbBr3 PSCs. At the optimal InBr3 concentration of 0.21 M, the InBr3:CsPbBr3 perovskite solar cell exhibited a power conversion efficiency of 6.48%, which was significantly higher than that of the pristine device. In the part of experimental materials, we found many familiar compounds, such as Indium(III) bromide(cas: 13465-09-3HPLC of Formula: 13465-09-3)

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.HPLC of Formula: 13465-09-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Liu, Yanjun; Tao, Tao; Hu, Hui-Chao; Li, Huixin; Ouyang, Xinhiua published their research in Dyes and Pigments in 2021. The article was titled 《Fine regulation of linker and donor moieties to construct benzimidazole-based blue emitters for high-efficient organic light-emitting diodes》.Reference of 9,10-Dibromoanthracene The article contains the following contents:

The investigation and development of novel blue emitters are still necessary for the fabrication of high-efficient organic light-emitting diodes (OLEDs). Benzimidazole and its derivatives have been attracting extensive attention due to the special characterizations to achieve high device efficiency. However, the systematic elucidation of the relationship between structure and properties is rarely reported. In this paper, four benzimidazole derivatives with virus linker and donor units were designed and synthesized, named PI-AN-3-Cz, PI-NP-3-Cz, PI-AN-TPA, and PI-NP-TPA. Their absorption, photoluminescence, electrochem., and thermol. were systematically studied, and the results were found to be potential candidates for emitters of OLEDs. Interestingly, the fabricated OLEDs with PI-AN-3-Cz as emitter showed the best performance with the efficiencies of 13.75 cd/A, 5.87 lm/W, and 8.55%. Furthermore, it can be observed that these linkers/donors are changed from anthracene to naphthalene/carbazole to triphenylamine, the corresponding emission moved from sky to violet blue with commission international De L’ Eclairage (CIE) of (0.151, 0.055). The findings give a guidance for the preparation of adjustable emission and high-efficient benzimidazole derivatives The results came from multiple reactions, including the reaction of 9,10-Dibromoanthracene(cas: 523-27-3Reference of 9,10-Dibromoanthracene)

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.Reference of 9,10-Dibromoanthracene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Recommanded Product: 13465-09-3In 2019 ,《Synthesis of pyrrolo[3′,2′:4,5][1,3]diazepino[2,1,7-cd]pyrrolizine derivatives from dicyanovinylene-bis(meso-aryl)dipyrrin》 appeared in RSC Advances. The author of the article were Shin, Ji-Young. The article conveys some information:

Pyrrolo[3′,2′:4,5][1,3]diazepino[2,1,7-cd]pyrrolizine derivatives I and II were synthesized from dicyanovinylene-bis(meso-aryl)dipyrrin in the presence of either BF3·OEt2 or InBr3, where I was readily oxidized in aerobic conditions to be II. It was understood that the fully elongated π-conjugation of II was achieved via the conformation of I. Crystal structures of I and II were elucidated by X-ray diffraction anal. Furthermore, two redox states of II were observed in the chem. redox processes. In the experimental materials used by the author, we found Indium(III) bromide(cas: 13465-09-3Recommanded Product: 13465-09-3)

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.Recommanded Product: 13465-09-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Quality Control of 3,6-Dibromo-9H-carbazoleIn 2021 ,《Pyridazine-carbazole based fluorescent probes for volatile acid detection》 appeared in Dyes and Pigments. The author of the article were Lee, Sohee; Kim, Seung-Hwan; Lee, Sunhee; Lee, Yeeun; Lee, Yong Sup; Yang, Kwang-Hwan; Wang, Kang-Kyun; Han, Won-Sik. The article conveys some information:

Stimuli-responsive materials based on donor-acceptor systems have great potential for sensing applications, including in the solid state. Herein, two push-pull-type mols., 3,6-di(9H-carbazol-9-yl)pyridazine (CzPyr-H) and 3,6-bis(3,6-dimethoxy-9H-carbazol-9-yl)pyridazine (CzPyr-OMe), each of which contain two carbazole donors and a pyridazine acceptor, were designed and synthesized. The photophys. properties of CzPyr-H and CzPyr-OMe were systematically explored with the aim of switching the absorption and emission properties using trifluoroacetic acid (TFA) as an external analyte, thus realizing volatile acid sensing. The protonation of the central pyridazine unit led to a broad absorption band at longer wavelengths owing to intramol. charge transfer (ICT), and the emission intensity gradually decreased with increasing TFA concentration D. functional theory calculations of the HOMO-LUMO energy gaps and orbital distributions of CzPyr-H and CzPyr-OMe as well as their protonated forms, CzPyr-H(H+) and CzPyr-OMe(H+), confirmed that charge transfer occurred in the protonated species. In their aggregated solid states, both compounds showed interesting emission properties including aggregation-enhanced emission (AEE). Utilizing their TFA sensitivity and the AEE phenomenon, CzPyr-H and CzPyr-OMe were successfully applied as fluorescent probes for volatile acid detection and as security ink for information encryption on paper. In the experiment, the researchers used many compounds, for example, 3,6-Dibromo-9H-carbazole(cas: 6825-20-3Quality Control of 3,6-Dibromo-9H-carbazole)

3,6-Dibromo-9H-carbazole(cas: 6825-20-3) is used as a pharmaceutical intermediate, and also an important intermediate of synthesizing optoelectronic materials. It has been used in the preparation of N-(2-hydroxyethyl)-3,6-dibromocarbazole.Quality Control of 3,6-Dibromo-9H-carbazole

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Nickel-Catalyzed Reductive Arylalkylation via a Migratory Insertion/Decarboxylative Cross-Coupling Cascade》 were Jin, Youxiang; Yang, Haobo; Wang, Chuan. And the article was published in Organic Letters in 2019. Recommanded Product: Ethyltriphenylphosphonium bromide The author mentioned the following in the article:

Reported is a nickel-catalyzed reductive arylalkylation of unactivated alkenes tethered to aryl iodides with redox active N-hydroxyphthalimide esters as the alkyl source through successful merging of migratory insertion and decarboxylative cross-coupling in a cascade. This new method avoids the use of pregenerated organometallic reagents and thus enables the synthesis of diverse benzene-fused carbo- and heterocyclic compounds with high tolerance of a wide range of functional groups. The experimental part of the paper was very detailed, including the reaction process of Ethyltriphenylphosphonium bromide(cas: 1530-32-1Recommanded Product: Ethyltriphenylphosphonium bromide)

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. CatOnium ETPB is also used as catalysts in the synthesis of certain organic compounds.Recommanded Product: Ethyltriphenylphosphonium bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Palladium-Catalyzed Dialkylation of C-C Triple Bonds: Access to Multi-Functionalized Indenes》 were Liu, Xiao-Wei; Li, Shu-Sen; Dai, Dong-Ting; Zhao, Meng; Shan, Cui-Cui; Xu, Yun-He; Loh, Teck-Peng. And the article was published in Organic Letters in 2019. SDS of cas: 1530-32-1 The author mentioned the following in the article:

A palladium-catalyzed dialkylation of 1,3-dien-5-ynes was developed using alkenyl double bonds as the initiator and terminator for the synthesis of functionalized indene derivatives The reactions were performed under mild reaction conditions, affording the corresponding multi-substituted indene derivatives in high efficiency via unprecedented 5-endo cyclization and alkylation processes. The substituent location at the alkenyl double bond was essential for the chemoselective synthesis of the indene and naphthalene derivatives, resp. 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. CatOnium ETPB is also used as catalysts in the synthesis of certain organic compounds.SDS of cas: 1530-32-1

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Ding, Yi; Ruth, Paul Niklas; Herbst-Irmer, Regine; Stalke, Dietmar; Yang, Zhi; Roesky, Herbert W. published an article in 2021. The article was titled 《Pentamethyl- and 1,2,4-tri(tert-butyl)cyclopentadienyl containing p-block complexes – differences and similarities》, and you may find the article in Dalton Transactions.Category: bromides-buliding-blocks The information in the text is summarized as follows:

The sterically encumbered cyclopentadienyl ligand 1,2,4-(Me3C)3C5H2 (Cp”’) was used to stabilize efficiently the main group metals of Al, Ga, In, Ge and Sn, resp. The σ-bonded Ga compounds [η1-Cp”’Ga(μ-X)X]2 (X = Cl, 2; X = I, 3) and In compound [η1-Cp”’In(μ-Br)Bu]2 (7) exhibit dimers through halogen bridges. Reduction of 2 with 2 equiv of KC8 leads almost to the same amount of η1-Cp”’Ga(THF)Cl2 (4) and η5-Cp”’Ga (5), resp. The exception is compound 5, which was obtained by reducing 2 or 3 with 4 equiv of KC8. Compound 5 as Lewis base reacts with GaI3 readily forming the Lewis acid-base adduct product η5-Cp”’Ga → GaI3 (6). Also, compounds with the Cp”’ ligand stabilize heavier low-valent Group 14 elements for example [η5-Cp”’E(II)]+ [E(II)Cl3]- (E = Ge 8, Sn 9), which are π-bonded ionic compounds that possess a low-valent cation and an anion. In the cation of [η5-Cp”’E(II)]+, the Cp”’ ligand adopts an η5-coordination mode with Ge and Sn, resp., which present half-sandwich complexes. While the E(II) fragment interacts with five π electrons from the Cp”’ unit to generate an electron-octet arrangement at the resp. element. All new reported structures are comparing well with the corresponding compounds containing the pentamethylcyclopentadienyl (Cp*) ligand. The experimental process involved the reaction of Indium(III) bromide(cas: 13465-09-3Category: bromides-buliding-blocks)

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.Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Gold-Catalyzed Carbazolation Reactions of Alkynes》 was written by Jana, Sripati; He, Feifei; Koenigs, Rene M.. COA of Formula: C12H7Br2N And the article was included in Organic Letters in 2020. The article conveys some information:

Herein, we report on a Au(I)-catalyzed reaction of alkynes with carbazoles that enables a one-step synthesis of vinyl carbazoles that are important mols. for applications as photoluminescent materials. This reaction proceeds under mild conditions at room temperature, without the need of external bases, and can be employed to a variety of aromatic and aliphatic alkynes in monohydroamination and poly-hydroamination reactions. We conclude with photophys. studies of the vinyl carbazole products, which feature distinct fluorescence properties. In addition to this study using 3,6-Dibromo-9H-carbazole, there are many other studies that have used 3,6-Dibromo-9H-carbazole(cas: 6825-20-3COA of Formula: C12H7Br2N) was used in this study.

3,6-Dibromo-9H-carbazole(cas: 6825-20-3) is used as a pharmaceutical intermediate, and also an important intermediate of synthesizing optoelectronic materials. It has been used as a reagent in the synthesis of P7C3-A20 which is a potent neuroprotective agent.COA of Formula: C12H7Br2N

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Aggregation-induced emission compounds based on 9,10-dithienylanthracene and their applications in cell imaging》 was published in Dyes and Pigments in 2020. These research results belong to Wang, Renjie; Diao, Lu; Zhang, Jie; Chen, Zhao; Pu, Shouzhi. Product Details of 523-27-3 The article mentions the following:

Three new sym. 9,10-dithienylanthracene (DTA) derivatives, including 9,10-bis-(4-(4-methoxyphenyl)-5-methylthiophene-2-yl)anthracene (BMPTA), 9,10-bis-(5-methyl-4-phenylthiophene-2-yl)anthracene (BPTA), and 9,10-bis-(4-(4-cyanophenyl)-5-methylthiophene-2-yl)anthracene (BCPTA), with excellent aggregation-induced emission (AIE) behaviors had been designed and synthesized successfully. Crystal BMPTA and BPTA had nonplanar conformations because of the multiple intermol. hydrogen bonding interaction between the adjacent mols., which restricted their intramol. rotation and enabled them to emit intensely. Addnl., both BMPTA and BPTA exhibited reversible mechanofluorochromic (MFC) performance by grinding-fuming, which was systematically investigated with powder X-ray diffraction (XRD), differential scanning calorimetry (DSC) and photoluminescent (PL) lifetime. The results showed that substituent groups had significant influence on their mol. packing, MFC and AIE properties. Furthermore, these DTA luminogens could be applied in cell imaging as fluorochrome. In the part of experimental materials, we found many familiar compounds, such as 9,10-Dibromoanthracene(cas: 523-27-3Product Details of 523-27-3)

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%.Product Details of 523-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary