Category: bromides-buliding-blocks

Quality Control of 3-Bromo-2-methylbenzoic acidIn 2018 ,《Regioselective Functionalization of 4-Methyl-1H-indole for Scalable Synthesis of 2-Cyano-5-formyl-4-methyl-1H-indole》 appeared in Organic Process Research & Development. The author of the article were Zhang, Jun; Hu, Yun; Wang, Haiyu; Guo, Aixin; Kong, Jianshe; Ma, Rujian; Wu, Tao; Wang, Yi; Li, Lian-Sheng; Mai, Wanping; Ren, Pingda; Deng, Xiaohu. The article conveys some information:

We report a five-step synthesis of 2-cyano-5-formyl-4-methyl-1H-indole through sequential functionalization of readily available 4-methyl-1H-indole. Cyano and aldehyde functionalities are regioselectively installed at the 2 and 5 position, resp. The sequence is concise and high-yielding, amenable for kilogram scale production In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzoic acid(cas: 76006-33-2Quality Control of 3-Bromo-2-methylbenzoic acid)

3-Bromo-2-methylbenzoic acid(cas: 76006-33-2) belongs to organobromine compounds.Depending on the type of carbon to which the bromine is bonded, organic bromide could be alkyl, alkenyl, alkynyl, or aryl. Quality Control of 3-Bromo-2-methylbenzoic acid Alkyl bromides are mainly used as alkylating agents and also find application as a solvent to extract oil from seeds and wool.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

HPLC of Formula: 13465-09-3In 2021 ,《High-Rate Long Cycle-Life Li-Air Battery Aided by Bifunctional InX3 (X = I and Br) Redox Mediators》 appeared in ACS Applied Materials & Interfaces. The author of the article were Rastegar, Sina; Hemmat, Zahra; Zhang, Chengji; Plunkett, Samuel; Wen, Jianguo; Dandu, Naveen; Rojas, Tomas; Majidi, Leily; Misal, Saurabh N.; Ngo, Anh T.; Curtiss, Larry A.; Salehi-Khojin, Amin. The article conveys some information:

Redox mediators (RMs) are solution-based additives that have been extensively used to reduce the charge potential and increase the energy efficiency of Li-oxygen (Li-O2) batteries. However, in the presence of RMs, achieving a long cycle-life operation of Li-O2 batteries at a high current rate is still a major challenge. In this study, we discover a novel synergy among InX3 (X = I and Br) bifunctional RMs, molybdenum disulfide (MoS2) nanoflakes as the air electrode, DMSO/ionic liquid hybrid electrolyte, and LiTFSI as a salt to achieve long cycle-life operations of Li-O2 batteries in a dry air environment at high charge-discharge rates. Our results indicate that batteries with InI3 operate up to 450 cycles with a c.d. of 0.5 A g-1 and 217 cycles with a c.d. of 1 A g-1 at a fixed capacity of 1 A h g-1. Batteries with InBr3 operate up to 600 cycles with a c.d. of 1 A g-1. These batteries can also operate at a higher charge rate of 2 A g-1 up to 200 cycles (for InBr3) and 160 cycles (for InI3). Our exptl. and computational results reveal that while X3- is the source of the redox mediator, LiX at the MoS2 cathode, In3+ reacts on the lithium anode side to form a protective layer on the surface, thus acting as an effective bifunctional RM in a dry air environment. This evidence for a simultaneous improvement in the current rates and cycle life of a battery in a dry air atm. opens a new direction for research for advanced energy storage systems. The results came from multiple reactions, including the reaction of Indium(III) bromide(cas: 13465-09-3HPLC of Formula: 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.HPLC of Formula: 13465-09-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

SDS of cas: 5437-45-6In 2020 ,《Facile synthesis of indolizines using layered double hydroxides@poly(p-phenylenediamine) as a catalyst with a green tool (neat technology)》 appeared in Applied Organometallic Chemistry. The author of the article were Karamshahi, Zahra; Ghorbani-Vaghei, Ramin. The article conveys some information:

The three-component reaction of phenacyl bromide, di-Me acetylenedicarboxylate and pyridine was catalyzed by layered double hydroxides@poly(p-phenylenediamine) (LDHs@PpPDA), in a one-pot reaction, in order to give the corresponding indolizines in excellent yields. After reading the article, we found that the author used Benzyl 2-bromoacetate(cas: 5437-45-6SDS of cas: 5437-45-6)

Benzyl 2-bromoacetate(cas: 5437-45-6) has been used in the alkylation of (-)-2,3-O-isopropylidene-D-threitol that afforded lipopeptide, 2-[(4R,5R)-5-({[(9H-fluoren-9-yl)methoxy]carbonylaminomethyl}-2,2-dimethyl-1,3-dioxolan-4-yl)methoxy]acetic acid.SDS of cas: 5437-45-6

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Zhao, Zean; Liu, Jin; Kuang, Peihua; Luo, Jian; Surineni, Goverdhan; Cen, Xiaolin; Wu, Ting; Cao, Ying; Zhou, Pingzheng; Pang, Jianxin; Zhang, Qun; Chen, Jianjun published an article in European Journal of Medicinal Chemistry. The title of the article was 《Discovery of novel verinurad analogs as dual inhibitors of URAT1 and GLUT9 with improved Druggability for the treatment of hyperuricemia》.SDS of cas: 1129-28-8 The author mentioned the following in the article:

Verinurad (RDEA3170) is a selective URAT1 inhibitor under investigation for the treatment of gout and hyperuricemia. In an effort to further improve the pharmacodynamics/pharmacokinetics of verinurad and to increase the structural diversity, we designed novel verinurad analogs by introducing a linker (e.g. aminomethyl, amino or oxygen) between the naphthalene and the pyridine ring to increase the flexibility. These compounds were synthesized and tested for their in vitro URAT1-inhibitory activity. Most compounds exhibited potent inhibitory activities against URAT1 with IC50 values ranging from 0.24 μM to 16.35 μM. Among them, compound KPH2f exhibited the highest URAT1-inhibitory activity with IC50 of 0.24 μM, comparable to that of verinurad (IC50 = 0.17 μM). KPH2f also inhibited GLUT9 with an IC50 value of 9.37 ± 7.10 μM, indicating the dual URAT1/GLUT9 targeting capability. In addition, KPH2f showed little effects on OAT1 and ABCG2, and thus was unlikely to cause OAT1/ABCG2-mediated drug-drug interactions and/or to neutralize the uricosuric effects of URAT1/GLUT9 inhibitors. Importantly, KPH2f (10 mg/kg) was equally effective in reducing serum uric acid levels and exhibited higher uricosuric effects in a mice hyperuricemia model, as compared to verinurad (10 mg/kg). Furthermore, KPH2f demonstrated favorable pharmacokinetic properties with an oral bioavailability of 30.13%, clearly better than that of verinurad (21.47%). Moreover, KPH2f presented benign safety profiles without causing hERG toxicity, cytotoxicity in vitro (lower than verinurad), and renal damage in vivo. Collectively, these results suggest that KPH2f represents a novel, safe and effective dual URAT1/GLUT9 inhibitor with improved druggabilities and is worthy of further investigation as an anti-hyperuricemic drug candidate. The results came from multiple reactions, including the reaction of Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8SDS of cas: 1129-28-8)

Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8) 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. SDS of cas: 1129-28-8 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

In 2022,Zhang, Yuhang; Li, Rui; Chang, Lijing; Ma, Yang; Hou, Yanjun; Niu, Haijun published an article in Macromolecular Chemistry and Physics. The title of the article was 《Electropolymerization of thiophene-based monomers with different spatial structures: the impact of monomer structure on electrochromic properties》.HPLC of Formula: 3141-27-3 The author mentioned the following in the article:

The development prospect of conductive electrochromic (EC) polymers requires the design of polymers with high performance and good stability. Here, a new scheme is designed to enhance EC properties by adjusting the monomer mol. structure. Four monomers with different structures based on thiophene and 3,4-ethylenedioxythiophene (EDOT) are designed and synthesized. The corresponding polymer films (P1, P2, P3, and P4) are prepared by electrochem. polymerization at low applied potential. The spatial structure-performance relationship of precursors with different structures and polymers is systematically discussed. In the electropolymerization experiments, it is noted that P3 has no EC property. This may be connected to the spatial structure of P3 polymerization which is not suitable for charge transporting. By contrast, the other three polymers exhibit excellent electrochem. properties. The diffusion rate higher of P1 has also been corroborated by using electrochem. impedance spectroscopy (EIS) spectrum. The P1 film has the best stability and fastest colorized time among the samples; such superior electrochem. property may be associated with the closely stacked formed by the unique sheet-like spatial structure. The design of the space structure has a significant impact on the optical and elec. properties of the polymer film. In the experiment, the researchers used many compounds, for example, 2,5-Dibromothiophene(cas: 3141-27-3HPLC of Formula: 3141-27-3)

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.HPLC of Formula: 3141-27-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Yuan, Wei; Zhu, Xujiang; Xu, Yankun; He, Chuan published an article in Angewandte Chemie, International Edition. The title of the article was 《Synthesis of Si-Stereogenic Silanols by Catalytic Asymmetric Hydrolytic Oxidation》.Recommanded Product: 1-Bromo-2-isopropylbenzene The author mentioned the following in the article:

Despite growing progress in the construction of chiral organosilicon compounds, the catalytic asym. synthesis of silicon-stereogenic silanols is less explored and remains a considerable challenge. Herein, authors report the first enantioselective construction of silicon-stereogenic silanols by the catalytic asym. hydrolytic oxidation of dihydrosilanes. This practical procedure features ambient reaction conditions, high atom economy, good functional-group compatibility, and H2 as the only byproduct, and produces a wide range of valuable chiral silanols and bis-silanols in decent yields with excellent chemo- and stereoselectivity.1-Bromo-2-isopropylbenzene(cas: 7073-94-1Recommanded Product: 1-Bromo-2-isopropylbenzene) was used in this study.

1-Bromo-2-isopropylbenzene(cas: 7073-94-1) 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. In contrast, terrestrial plants account only for a few bromine-containing compounds.Recommanded Product: 1-Bromo-2-isopropylbenzene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Fabrication of a Hydrogen-Bonded Organic Framework Membrane through Solution Processing for Pressure-Regulated Gas Separation》 was written by Feng, Shou; Shang, Yanxue; Wang, Zhikun; Kang, Zixi; Wang, Rongming; Jiang, Jianzhuang; Fan, Lili; Fan, Weidong; Liu, Zhanning; Kong, Guodong; Feng, Yang; Hu, Songqing; Guo, Hailing; Sun, Daofeng. Application In Synthesis of Tris(4-bromophenyl)amine And the article was included in Angewandte Chemie, International Edition in 2020. The article conveys some information:

Ordered and flexible porous frameworks with solution processability are highly desirable to fabricate continuous and large-scale membranes for the efficient gas separation Herein, the first microporous hydrogen-bonded organic framework (HOF) membrane has been fabricated by an optimized solution-processing technique. The framework exhibits the superior stability because of the abundant hydrogen bonds and strong π-π interactions. Thanks to the flexible HOF structure, the membrane possesses the unprecedented pressure-responsive H2/N2 separation performance. Furthermore, the scratched membrane can be healed by the treatment of solvent vapor, achieving the recovery of separation performance. In addition to this study using Tris(4-bromophenyl)amine, there are many other studies that have used Tris(4-bromophenyl)amine(cas: 4316-58-9Application In Synthesis of Tris(4-bromophenyl)amine) was used in this study.

In other references, Tris(4-bromophenyl)amine(cas: 4316-58-9) is often used in the synthesis of porous luminescent covalent–organic polymers (COPs)Application In Synthesis of Tris(4-bromophenyl)amine

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Cytotoxicity of Mn-based photoCORMs of ethynyl-α-diimine ligands against different cancer cell lines: The key role of CO-depleted metal fragments》 was written by Rossier, Jeremie; Delasoie, Joachim; Haeni, Laetitia; Hauser, Daniel; Rothen-Rutishauser, Barbara; Zobi, Fabio. Recommanded Product: Bromopentacarbonylmanganese(I) And the article was included in Journal of Inorganic Biochemistry in 2020. The article conveys some information:

A series of tricarbonyl manganese complexes bearing 4-ethynyl-2,2′-bipyridine and 5-ethynyl-1,10-phenanthroline α-diimine ligands were synthesized, characterized and conjugated to vitamin B12, previously used as a vector for drug delivery, to take advantage of its water solubility and specificity toward cancer cells. The compounds act as photoactivatable carbon monoxide-releasing mols. rapidly liberating on average ca. 2.3 equiv of CO upon photo-irradiation Complexes and conjugates were tested for their anticancer effects, both in the dark and following photo-activation, against breast cancer MCF-7, lung carcinoma A549 and colon adenocarcinoma HT29 cell lines as well as immortalized human bronchial epithelial cells 16HBE14o- as the non-carcinogenic control. Our results indicate that the light-induced cytotoxicity these mols. can be attributed to both their released CO and to their CO-depleted metal fragments including liberated ligands. In the experiment, the researchers used many compounds, for example, Bromopentacarbonylmanganese(I)(cas: 14516-54-2Recommanded Product: 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.Recommanded Product: Bromopentacarbonylmanganese(I)

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《In Situ Electropolymerization Enables Ultrafast Long Cycle Life and High-Voltage Organic Cathodes for Lithium Batteries》 was written by Zhao, Chen; Chen, Zifeng; Wang, Wei; Xiong, Peixun; Li, Benfang; Li, Mengjie; Yang, Jixing; Xu, Yunhua. Electric Literature of C18H12Br3N And the article was included in Angewandte Chemie, International Edition in 2020. The article conveys some information:

Organic cathode materials have attracted extensive attention because of their diverse structures, facile synthesis, and environmental friendliness. However, they often suffer from insufficient cycling stability caused by the dissolution problem, poor rate performance, and low voltages. An in situ electropolymerization method was developed to stabilize and enhance organic cathodes for lithium batteries. 4,4′,4”-Tris(carbazol-9-yl)-triphenylamine (TCTA) was employed because carbazole groups can be polymerized under an elec. field and they may serve as high-voltage redox-active centers. The electropolymerized TCTA electrodes demonstrated excellent electrochem. performance with a high discharge voltage of 3.95 V, ultrafast rate capability of 20 A g-1, and a long cycle life of 5000 cycles. Our findings provide a new strategy to address the dissolution issue and they explore the mol. design of organic electrode materials for use in rechargeable batteries. The experimental part of the paper was very detailed, including the reaction process of Tris(4-bromophenyl)amine(cas: 4316-58-9Electric Literature of C18H12Br3N)

In other references, Tris(4-bromophenyl)amine(cas: 4316-58-9) is often used in the synthesis of porous luminescent covalent–organic polymers (COPs)Electric Literature of C18H12Br3N

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Low Dielectric Polymers with High Thermostability Derived from Biobased Vanillin》 was published in ACS Sustainable Chemistry & Engineering in 2020. These research results belong to Dai, Menglu; Tao, Yangqing; Fang, Linxuan; Wang, Caiyun; Sun, Jing; Fang, Qiang. Application of 1779-49-3 The article mentions the following:

Vanillin has recently been prepared on a large scale from lignin, which becomes the second largest renewable resource. Because it has a naturally aromatic ring and an easily modified functional group, vanillin is considered as one of the ideal feedstocks for the synthesis of high-performance polymers. Based on this, there are a few investigations on low dielec. polymers derived from vanillin, and we have designed and synthesized a monomer containing crosslinkable vinyl and benzocyclobutene units starting from vanillin. This monomer can be easily thermally polymerized into a crosslinked network, which displays good thermostability with a 5% weight loss temperature (T5d) of up to 436°C and a coefficient of thermal expansion (CTE) of 60.9 ppm/°C. Moreover, no obvious glass-transition temperature (Tg) of the crosslinked network is observed from room temperature to 400°C during the dynamic mech. anal. (DMA). In addition, the DMA test indicates that the crosslinked network exhibits good mech. properties with a storage modulus of up to 3.89 GPa at room temperature Furthermore, the crosslinked network displays good dielec. properties with a dielec. constant (Dk) of less than 2.84 and a dissipation factor (Df) of below 4.9 × 10-3 for frequencies ranging from 0.15 to 20 MHz. At a high frequency of 5 GHz, the crosslinked network exhibits a Dk of 2.81 and a Df of 6.79 × 10-3, resp. When the crosslinked polymer is immersed in water at room temperature for 96 h, it shows a low water uptake of 0.44%. These results indicate that the new biobased thermosetting resin has potential applications as a matrix resin or an encapsulation material in the microelectronic industry. Heating a new functional monomer (BCB-V) derived from vanillin gave a crosslinked network, displaying good hydrophobicity, film uniformity, thermostability, and dielec. properties at a high frequency of 5 GHz. In the experiment, the researchers used Methyltriphenylphosphonium bromide(cas: 1779-49-3Application of 1779-49-3)

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 of 1779-49-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary