Tag: 300-400

《Combined Extractive Dearomatization, Desulfurization, and Denitrogenation of Oil Fuels Using Deep Eutectic Solvents: A Parametric Study》 was published in Industrial & Engineering Chemistry Research in 2020. These research results belong to Warrag, Samah E. E.; Darwish, Ahmad S.; Abuhatab, Farah O. S.; Adeyemi, Idowu A.; Kroon, Maaike C.; AlNashef, Inas M.. Application In Synthesis of Methyltriphenylphosphonium bromide The article mentions the following:

Industrially, deep dearomatization of oil fuels is achieved via catalytic hydrodearomatization (HDA). However, this process suffers from several drawbacks. The most pronounced disadvantages are the intensive energy consumption and the low efficiency toward some aromatic species. With the aim of lowering energy consumption as well as improving the removal efficiency of this process, selective liquid-liquid extraction was proposed in this work. A phosphonium-based deep eutectic solvent (DES) composed of methyltriphenylphosphonium bromide (MTPPBr) and triethylene glycol (TEG) in a molar ratio equal to 1:4 (MTPPBr/TEG) was selected for this investigation. The DES was characterized by its water content, d., viscosity, and degradation temperature Toluene, thiophene, and quinoline were selected to represent the aromatic species in the oil. However, the oil fuel was represented by n-heptane. Next, the solubility of toluene, thiophene, quinoline, and n-heptane in the pure TEG and MTPPBr/TEG was measured at 298.2 K and 1.01 bar. To assess the selectivities and the solute distribution coefficients of the DES for each compound, liquid-liquid equilibrium (LLE) data for the systems {toluene + n-heptane + MTPPBr/TEG}, {thiophene + n-heptane + MTPPBr/TEG}, and {quinoline + n-heptane + MTPPBr/TEG} were reported at 298.2 K and 1.01 bar. Afterward, a parametric study on an arbitrary oil model of {20% toluene + 2% thiophene + 2% quinoline + 76% n-heptane} was conducted by first testing the single-stage liquid-liquid extraction efficiency for each impurity “”toluene, thiophene, and quinoline”” at 298.2 K and 1.01 bar. Then, the effects of various operating parameters including the extraction temperature, the solvent-to-feed ratio (S/F), and the initial concentration of the impurity were investigated. Moreover, the number of extraction stages was estimated Finally, the effect of the repetitive use of DES as well as the possibility of DES regeneration was studied. The experimental process involved the reaction of Methyltriphenylphosphonium bromide(cas: 1779-49-3Application In Synthesis of Methyltriphenylphosphonium bromide)

Methyltriphenylphosphonium bromide(cas: 1779-49-3) is an organophosphorus compound, with potential use as a precursor and a solvent in organic synthesis. And it is used widely for methylenation via the Wittig reaction.Application In Synthesis of Methyltriphenylphosphonium bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Recommanded Product: Indium(III) bromideIn 2021 ,《New Reactions of Cyclopentadienylnickel Chelates with Secondary Phosphane Tethers》 appeared in European Journal of Inorganic Chemistry. The author of the article were Heinisch, Sandra Lauren; Werner, Irina; Butenschon, Holger. The article conveys some information:

In continuation of our research in cyclopentadienylalkylphosphine nickel chelates with secondary phosphine tethers the first cationic representatives of this class of compounds are reported. These were obtained by reaction of the resp. bromo complex with tris(4-trifluoromethylphenyl)phosphine as well as with a number of alkyl and aryl isonitriles in the presence of indium tribromide. This Lewis acid is crucial for the success of the reactions leading to the resp. tetrabromoindate salts. The compounds were characterized spectroscopically, including rare 14N,13C couplings being observed Finally, deprotonation experiments are reported, which provide some evidence for deprotonation taking place, although the expected phosphinidene chelates could not be isolated due to rapid decomposition After reading the article, we found that the author used Indium(III) bromide(cas: 13465-09-3Recommanded Product: Indium(III) bromide)

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: Indium(III) bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Qi, Zhi-Chao; Lou, Qin-Xin; Niu, Yuan; Yang, Shang-Dong published their research in Chemical Communications (Cambridge, United Kingdom) in 2021. The article was titled 《Temporary (P=O) directing group enabled carbazole ortho arylation via palladium catalysis》.Reference of 3,6-Dibromo-9H-carbazole The article contains the following contents:

A palladium-catalyzed, temporary P(O) directing group assisted C-H bond arylation of carbazoles was achieved. The release of the directing group occurred spontaneously in the reaction and the mechanistic studies indicated that acid was essential for N-P bond cleavage. The experimental part of the paper was very detailed, including the reaction process of 3,6-Dibromo-9H-carbazole(cas: 6825-20-3Reference 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.Reference of 3,6-Dibromo-9H-carbazole

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Ikeda, Yuto; Inagaki, Yusuke; Setaka, Wataru published their research in Chemical Communications (Cambridge, United Kingdom) in 2021. The article was titled 《Simultaneous synthesis and characterization of in/out-isomers of disilabicyclo[14.14.14]alkanes》.Quality Control of Indium(III) bromide The article contains the following contents:

Facile and simultaneous synthesis of diphenyl-disilabicyclo[14.14.14]alkane in/out-isomers was achieved by using organosilicon chem. Although the formation of several in/out-isomers would be conceivable, only two diastereomers, i.e. the (traditional-)out,out-isomer and the twist-out,out-isomer, could be isolated because of homeomorphic isomerization. Crystal structures of the diastereomers were confirmed. In addition to this study using Indium(III) bromide, there are many other studies that have used Indium(III) bromide(cas: 13465-09-3Quality Control of Indium(III) bromide) was used in this study.

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.Quality Control of Indium(III) bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Seasonal variation and gas/particle partitioning of atmospheric halogenated polycyclic aromatic hydrocarbons and the effects of meteorological conditions in Ulsan, South Korea》 was written by Vuong, Quang Tran; Thang, Phan Quang; Nguyen, Tuyet Nam Thi; Ohura, Takeshi; Choi, Sung-Deuk. Recommanded Product: 523-27-3 And the article was included in Environmental Pollution (Oxford, United Kingdom) in 2020. The article conveys some information:

Atm. halogenated polycyclic aromatic hydrocarbons (Halo-PAHs) and parent PAHs were monitored in Ulsan, South Korea for one year (Jan.-Dec. 2015) to investigate their seasonal patterns, gas/particle partitioning behavior, and the impact of meteorol. conditions. The mean concentrations of 24 chlorinated PAHs, 11 brominated PAHs, and 13 parent PAHs in the gaseous and particulate phases were 8.64 and 9.64 pg/m3, 11.6 and 1.62 pg/m3, and 2.17 and 2.40 ng/m3, resp. Winter had the highest ClPAH and PAH levels, with significant contributions from poly-chlorine groups and high-mol.-weight compounds However, BrPAHs showed reverse patterns with the highest concentration in summer and the dominant gaseous fraction throughout the year. In contrast, the effects of the temperature inversion layer and atm. transport from the outside of Ulsan were more apparent for ClPAHs and PAHs, particularly in winter and spring. Regarding gas/particle partitioning, Halo-PAHs exhibited different seasonal behaviors from those of parent PAHs. This study implies that Halo-PAHs and parent PAHs might not share the same atm. behavior, possibly due to different characteristics in atm. reactions with other chems. and particle-size distribution. However, there have been limited studies about the formation of Halo-PAHs and their physicochem. properties; hence, further in-depth investigations are of vital importance. In the experiment, the researchers used 9,10-Dibromoanthracene(cas: 523-27-3Recommanded Product: 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.Recommanded Product: 523-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Reference of Ethyltriphenylphosphonium bromideIn 2021 ,《Electrochemical oxidative Z-selective C(sp2)-H chlorination of acrylamides》 appeared in Chemical Communications (Cambridge, United Kingdom). The author of the article were Harnedy, James; Hareram, Mishra Deepak; Tizzard, Graham J.; Coles, Simon J.; Morrill, Louis C.. The article conveys some information:

An electrochem. method for the oxidative Z-selective C(sp2)-H chlorination of acrylamides was developed. This catalyst and organic oxidant free method was applicable across various substituted tertiary acrylamides and provides access to a broad range of synthetically useful Z-β-chloroacrylamides in good yields (22 examples, 73% average yield). The orthogonal derivatization of the products was demonstrated through chemoselective transformations and the electrochem. process was performed on gram scale in flow. After reading the article, we found that the author used Ethyltriphenylphosphonium bromide(cas: 1530-32-1Reference of 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.Reference of Ethyltriphenylphosphonium bromide

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Optimization of Thermoelectric Properties of Polymers by Incorporating Oligoethylene Glycol Side Chains and Sequential Solution Doping with Preannealing Treatment》 was written by Tripathi, Ayushi; Ko, Youngjun; Kim, Miso; Lee, Yeran; Lee, Soonyong; Park, Juhyung; Kwon, Young-Wan; Kwak, Jeonghun; Woo, Han Young. Related Products of 111865-47-5 And the article was included in Macromolecules (Washington, DC, United States) on August 25 ,2020. The article conveys some information:

Two types of p-type thermoelec. (TE) polymers with alkyl (PCPDTSBT) and oligoethylene glycol (OEG) side chains (PCPDTSBT-A) on an sp2-hybridized olefinic bis(alkylsulfanyl)methylene-substituted cyclopentadithiophene backbone are synthesized. Interestingly, the OEG-substituted polymer, PCPDTSBT-A, exhibits significant self-doping compared to PCPDTSBT, where the polaron d. of the former is 2.3 × 1016 mm-3 (vs. 7.9 × 1014 mm-3 for PCPDTSBT) without external doping. Changing the side chains also induces a completely different polymer chain orientation in the PCPDTSBT-A (face-on) and PCPDTSBT (edge-on) films. The effect of doping with 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ) on the morphol. and TE properties of the polymers with different side chains is studied. Sequential solution doping (SQD) is performed by overcoating the preannealed polymer films with F4TCNQ solution, which affords highly effective doping without disrupting the morphol. of the crystalline films, especially for PCPDTSBT-A with OEG side chains. Resulting from the synergistic effect of the OEG side chains and SQD, PCPDTSBT-A exhibits remarkably improved elec. conductivity (53.8 S cm-1) with a higher power factor (40.4μW m-1 K-2), compared to PCPDTSBT, for which the maximum elec. conductivity is 1.4 S cm-1 and the power factor is 1.8μW m-1 K-2. In addition, the transport coefficient of PCPDTSBT-A, determined by applying the Kang-Snyder model (2.40 × 10-2 S cm-1), is superior to that of PCPDTSBT (3.59 × 10-3 S cm-1), thereby showing the excellence of the developed strategy for improving the performance of TE polymers. The experimental process involved the reaction of Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide(cas: 111865-47-5Related Products of 111865-47-5)

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. Related Products of 111865-47-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Computed Properties of Br3InIn 2018 ,《A five-component Biginelli-Diels-Alder cascade reaction》 appeared in Frontiers in Chemistry (Lausanne, Switzerland). The author of the article were Maskrey, Taber S.; Frischling, Madeline C.; Rice, Mikhaila L.; Wipf, Peter. The article conveys some information:

A new multi-component condensation was discovered during the reaction of urea, β-keto ester and formaldehyde. In the presence of catalytic indium bromide, a Biginelli dihydropyrimidinone intermediate such as I [R1 = Et, Me, Bn; X = O, S] was further converted to a five-component condensation product such as II [R1 = Me, Et, allyl, Bn; X = O, S] through a formal hetero Diels-Alder reaction. The product structure was confirmed by NMR and NOE anal. and the proposed stepwise mechanism was supported by the reaction of the Biginelli intermediate with Et 2-methylene-3-oxobutanoate. In the part of experimental materials, we found many familiar compounds, such as Indium(III) bromide(cas: 13465-09-3Computed Properties of Br3In)

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.Computed Properties of Br3In

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Mohamed, Mohamed Gamal; Sharma, Santosh U.; Liu, Ni-Yun; Mansoure, Tharwat Hassan; Samy, Maha Mohamed; Chaganti, Swetha V.; Chang, Yu-Lung; Lee, Jyh-Tsung; Kuo, Shiao-Wei published an article in International Journal of Molecular Sciences. The title of the article was 《Ultrastable Covalent Triazine Organic Framework Based on Anthracene Moiety as Platform for High-Performance Carbon Dioxide Adsorption and Supercapacitors》.Application In Synthesis of 9,10-Dibromoanthracene The author mentioned the following in the article:

Conductive and porous nitrogen-rich materials have great potential as supercapacitor electrode materials. The exceptional efficiency of such compounds, however, is dependent on their larger surface area and the level of nitrogen doping. To address these issues, we synthesized a porous covalent triazine framework (An-CTFs) based on 9,10-dicyanoanthracene (An-CN) units through an ionothermal reaction in the presence of different molar ratios of molten zinc chloride (ZnCl2) at 400 and 500 °C, yielding An-CTF-10-400, An-CTF-20-400, An-CTF-10-500, and An-CTF-20-500 microporous materials. According to N2 adsorption-desorption analyses (BET), these An-CTFs produced exceptionally high sp. surface areas ranging from 406-751 m2·g-1. Furthermore, An-CTF-10-500 had a capacitance of 589 F·g-1, remarkable cycle stability up to 5000 cycles, up to 95% capacity retention, and strong CO2 adsorption capacity up to 5.65 mmol·g-1 at 273 K. As a result, our An-CTFs are a good alternative for both electrochem. energy storage and CO2 uptake. In the experimental materials used by the author, we found 9,10-Dibromoanthracene(cas: 523-27-3Application In Synthesis of 9,10-Dibromoanthracene)

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%.Application In Synthesis of 9,10-Dibromoanthracene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Indium controlled regioselective 1,4-alkylarylation of 1,3-dienes with α-carbonyl alkyl bromides and N-heterocycles》 was published in Chemical Communications (Cambridge, United Kingdom) in 2020. These research results belong to Gu, Chang-Cheng; Ouyang, Xuan-Hui; Song, Ren-Jie; Li, Jin-Heng. Electric Literature of Br3In The article mentions the following:

A new, selective indium-promoted silver-mediated intermol. oxidative 1,4-alkylarylation of 1,3-dienes with α-carbonyl alkyl bromides and N-heterocycles for producing functionalized N-heterocycles, which was characterized by its exquisitely controllable regio-/stereo-selectivity and excellent tolerance of functional groups was described. Mechanistically, the formation of the carbonyl-coordinated η3-allyl-In complex radical intermediate was the key factor for successfully achieving regio- and stereo-selectivity toward 1,4-difunctionalization and (E)-isomers.Indium(III) bromide(cas: 13465-09-3Electric Literature of Br3In) 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.Electric Literature of Br3In

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary