Tag: 200-300

Guan, Lijiang; Cheng, Guang; Tan, Bien; Jin, Shangbin published their research in Chemical Communications (Cambridge, United Kingdom) in 2021. The article was titled 《Covalent triazine frameworks formation via benzyl halide monomers forming photocatalyst for biomass reforming hydrogen evolution》.Application In Synthesis of 1,4-Bis(bromomethyl)benzene The article contains the following contents:

Here we report the synthesis of covalent triazine frameworks (CTFs) using benzyl halide monomers which are more cost-effective and with higher availability than previous ones. The resulting CTFs were successfully applied for efficient photocatalytic reforming of glucose for the first time, with a high hydrogen evolution rate up to 330μmol g-1 h-1 under pH = 12. This work presented a new way to synthesize CTFs and further exhibited their potential applications in photocatalytic biomass reforming. In addition to this study using 1,4-Bis(bromomethyl)benzene, there are many other studies that have used 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Application In Synthesis of 1,4-Bis(bromomethyl)benzene) was used in this study.

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) 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. Application In Synthesis of 1,4-Bis(bromomethyl)benzene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Hu, Yuanyuan; Luo, Honggen; Tu, Xiangtu; Xue, Han; Jin, Hongwei; Liu, Yunkui; Zhou, Bingwei published their research in Chemical Communications (Cambridge, United Kingdom) in 2021. The article was titled 《Selective cine-arylation of tert-cyclobutanols with indoles enabled by nickel catalysis》.Name: 5-Bromobenzo[d][1,3]dioxole The article contains the following contents:

In previous literature, tert-cyclobutanols are widely studied for C-C bond activation exclusively leading to the formation of ordinary γ-substituted ketones. Herein, authors report on nickel-catalyzed cine-arylation of tert-cyclobutanols with indoles to access β-aryl ketones with an unusual site-selectivity at the C3-position of tert-cyclobutanols. The reaction features earth-abundant nickel catalysis, excellent regioselectivity, high atom-economy, and broad substrate scope. The experimental part of the paper was very detailed, including the reaction process of 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4Name: 5-Bromobenzo[d][1,3]dioxole)

Furthermore, the coupling of 5-Bromobenzo[d][1,3]dioxole(cas: 2635-13-4) with β-methallyl alcohol was catalyzed by Pd(OAc)2 in combination with P(t-Bu)3.Name: 5-Bromobenzo[d][1,3]dioxole

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Practical and regioselective halo-trifluoromethylthiolation of sulfur ylides》 was written by Qin, Hongmei; Jia, Yimin; Wang, Na; Jiang, Zhong-Xing; Yang, Zhigang. Product Details of 5437-45-6 And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2020. The article conveys some information:

A H2O mediated practical and highly regioselective chloro- and bromo-trifluoromethylthiolation of sulfur ylides was reported using a difunctionalization strategy. In the reaction sequence, sulfur ylides presumably reacted with an electrophilic trifluoromethylthiolating reagent to generate an α-SCF3 substituted sulfonium salt intermediate, which then underwent a substitution with nucleophilic halogens. After reading the article, we found that the author used Benzyl 2-bromoacetate(cas: 5437-45-6Product Details of 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.Product Details of 5437-45-6

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Benzimidazole-based hyper-cross-linked poly(ionic liquid)s for efficient CO2 capture and conversion》 was published in Chemical Engineering Journal (Amsterdam, Netherlands) in 2020. These research results belong to Sang, Yafei; Huang, Jianhan. Name: 1,4-Bis(bromomethyl)benzene The article mentions the following:

Porous materials with high Brunauer-Emmett-Teller (BET) surface area (SBET) and abundant ionic active sites facilitate efficient CO2 capture and conversion. Herein, a kind of novel benzimidazole-based hyper-cross-linked poly(ionic liquid)s (HPILs) were developed via the hyper-crosslinking strategy and the as-prepared HPILs possessed high SBET (485-780 m2/g), plentiful micro/mesoporosity, and abundant ionic active sites. The HPILs showed noteworthy CO2 uptake (79-143 mg/g at 273 K and 1.0 bar), moderate isosteric heats (32-45 kJ/mol), and acceptable CO2/N2 selectivity (IAST: 23-46). Intriguingly, HPILs-Cl-2 exhibited excellent catalytic activity for CO2 cycloaddition and 99% of propylene oxide was successfully converted to cyclic carbonates under mild conditions (70°, 0.1 MPa CO2, 9 h). This synthetic strategy is of great importance for the functionalized hyper-cross-linked polymers and the synthesized HPILs are promising for efficient CO2 capture and conversion under mild conditions. After reading the article, we found that the author used 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Name: 1,4-Bis(bromomethyl)benzene)

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) 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. Alkyl bromides are mainly used as alkylating agents and also find application as a solvent to extract oil from seeds and wool. Name: 1,4-Bis(bromomethyl)benzene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Building a smart surface with converse temperature-dependent wettability based on poly(acrylamide-co-acrylonitrile)》 was published in Chemical Communications (Cambridge, United Kingdom) in 2020. These research results belong to Chen, Longbin; Yang, Tao; Niu, Yue; Mu, Xin; Gong, Yelei; Feng, Yancong; de Rooij, Nicolaas Frans; Wang, Yao; Li, Hao; Zhou, Guofu. Quality Control of 1,4-Bis(bromomethyl)benzene The article mentions the following:

A smart surface with converse temperature-dependent (CTD) wettability was fabricated from an upper critical solution temperature-type (UCST-type) poly(acrylamide-co-acrylonitrile) (P(AAm-co-AN)) copolymer. The obtained surface exhibits a remarkable and reversible hydrophobic-hydrophilic transition depending on temperature with a high response rate. The static water contact angle of the surface decreases from 103° ± 2° to 60° ± 1° as the temperature increases from 30°C to 80°C. Further, the wettability of the UCST-type surface shows a pos. linear relationship between wettability and temperature This study for the first time provides an UCST-type smart surface with wettability that decreases by over 35° as the temperature increases by only 20°C. In the experiment, the researchers used 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Quality Control of 1,4-Bis(bromomethyl)benzene)

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals.Quality Control of 1,4-Bis(bromomethyl)benzene Organobromine compounds have fallen under increased scrutiny for their environmental impact.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Fabrication of nor-seco-cucurbit[10]uril based supramolecular polymers via self-sorting》 were Yang, Yuchong; Ni, Xin-Long; Xu, Jiang-Fei; Zhang, Xi. And the article was published in Chemical Communications (Cambridge, United Kingdom) in 2019. Computed Properties of C8H8Br2 The author mentioned the following in the article:

A nor-seco-CB[10] (ns-CB[10]) based linear supramol. polymer is firstly fabricated via self-sorting strategy. Through self-sorting of the monomer, ns-CB[10] and CB[7], the unfavorable factors for supramol. polymerization are avoided. Therefore, supramol. polymer with high mol. weight is successfully fabricated, and the mol. weight can be controllably regulated. The experimental part of the paper was very detailed, including the reaction process of 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Computed Properties of C8H8Br2)

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) 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. Computed Properties of C8H8Br2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2010,Kumar, C. Kishor; Kumar, H. Vijay; Vijaya Kumar, Giriyapura R.; Naik, Nagaraja published 《3-Oxoisoindoline-5-carboxamides. Synthesis and their antioxidant activity studies》.Journal of Pharmaceutical Science & Technology published the findings.Application of 76006-33-2 The information in the text is summarized as follows:

3-Oxoisoindoline-5-carboxamides were synthesized from 3-oxoisoindoline-5-carboxylate. The synthesized compounds were evaluated for their antioxidant properties using 1,1-diphenyl-2-picrylhydrazine (DPPH) free radical scavenging assay and inhibition of human low-d. lipoprotein (LDL) oxidation assay. The results showed that all 3-oxoisoindoline-5-carboxamides possessed antioxidant activity. Among the synthesized analogous, one compound showed dominant activity. In the experiment, the researchers used 3-Bromo-2-methylbenzoic acid(cas: 76006-33-2Application of 76006-33-2)

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. Application of 76006-33-2 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

《Palladium(II)-Catalyzed C-H Bond Arylation of Electron-Deficient Arenes at Room Temperature》 was published in Angewandte Chemie, International Edition in 2011. These research results belong to Tredwell, Matthew J.; Gulias, Moises; Gaunt Bremeyer, Nadine; Johansson, Carin C. C.; Collins, Beatrice S. L.; Gaunt, Matthew J.. Computed Properties of C6H4BBrF3K The article mentions the following:

Herein, we report that the C-H bond arylation of benzaldimines with aryl-BF3K salts can be catalyzed by Pd(OAc)2 at room temperature The mild reaction conditions enable the functionalization of substrates displaying sensitive functionality. E.g., arylation of (E)-benzaldimine I with PhBF3K gave 82% II. Benzaldimine I could be phenylated to II in good yield using benzene as a source of the aryl group. The results came from multiple reactions, including the reaction of potassium (3-bromophenyl)trifluoroborate(cas: 374564-34-8Computed Properties of C6H4BBrF3K)

potassium (3-bromophenyl)trifluoroborate(cas: 374564-34-8) 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. Computed Properties of C6H4BBrF3K

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Optimization of an innovative vinylimidazole-based monolithic stationary phase and its use for pressured capillary electrochromatography》 was written by Murauer, Adele; Bakry, Rania; Partl, Gabriel; Huck, Christian W.; Ganzera, Markus. Electric Literature of C6H12Br2This research focused onvinylimidazole monolithic stationary phase pressured capillary electrochromatog; Caffeine; Capillary electrochromatography; Cationic monolith; Methylxanthines; Stationary phase optimization; Vinylimidazole. The article conveys some information:

A novel polymer monolith based on the dicationic crosslinker 3,3′-(hexane-1,6-diyl)bis(1-vinylimidazolium) bromide, the monomer 1-vinylimidazole and a ternary porogen mixture (1-propanol, decan-1-ol and water) was developed and optimized for capillary electrochromatog. This aim was accomplished by adjusting the composition of individual constituents in the polymerization mixture and monitored based on several relevant parameters (e.g. pore structure by SEM, generation of electroosmotic flow, or permeability of material). The ultimately selected composition yielded a monolithic phase which excellently resolved six methylxanthines (including caffeine, theobromine and theophylline) in 15 min. Key requirements concerning the used buffer were an acidic pH of 3 and the addition of 50% acetonitrile; addnl., a neg. voltage (-25 kV) had to be applied during analyses. The proposed separation mechanism was mixed mode, i.e. the combination of electrostatic repulsion and hydrophobic interaction. Monolith fabrication as well as separation efficiency are highly repeatable, the material was mech. stable and useable for at least 150 injections. Thus the presented stationary phase is definitely a very promising option for CEC. In the part of experimental materials, we found many familiar compounds, such as 1,6-Dibromohexane(cas: 629-03-8Electric Literature of C6H12Br2)

1,6-Dibromohexane(cas: 629-03-8) is generally used to introduce C6 spacer in the molecular architecture. Some of the examples are: synthesis of pyrrolo-tetrathiafulvalene molecular bridge (6PTTF6) to study redox switching behavior of single molecules; synthesis of water-soluble thermoresponsive polylactides.Electric Literature of C6H12Br2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Wang, Kaixuan; Xu, Chaoran; Hu, Xinyue; Zhou, Yuqiao; Lin, Lili; Feng, Xiaoming published their research in Chemical Communications (Cambridge, United Kingdom) in 2021. The article was titled 《Catalytic asymmetric [3+2] cycloaddition of isomunchnones with methyleneindolinones》.Quality Control of Benzyl 2-bromoacetate The article contains the following contents:

An efficient enantioselective [3+2] cycloaddition of isomunchnones with methyleneindolinones that are generated by an in situ intramol. addition of the carbonyl group to rhodium carbenes is realized with a chiral N,N’-dioxide/Zn(II) complex as a Lewis acid. A series of chiral oxa-bridged 3-spiropiperidines are obtained in high yields with excellent dr and excellent ee values. The experimental process involved the reaction of Benzyl 2-bromoacetate(cas: 5437-45-6Quality Control of Benzyl 2-bromoacetate)

Benzyl 2-bromoacetate(cas: 5437-45-6) belongs to benzyl acetate. Benzyl acetate is an aromatic chemical, usually appearing as a clear liquid with a moderate sweet-jasmine fragrance. This compound appears as a component of some of our fragrance blends.Quality Control of Benzyl 2-bromoacetate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary