Tag: 200-300

In 2019,Nano Letters included an article by Zhang, Lingling; Huang, Liping; Wu, Shanshan; Xu, Xin; Bao, Junhui; Shen, Bowen; Zhang, Liwei; Hou, Yu; Jin, Longyi; Chen, Tie; Yang, Zujin; Lee, Myongsoo; Ji, Hongbing; Huang, Zhegang. Reference of 1,4-Bis(bromomethyl)benzene. The article was titled 《Two-Dimensional Cationic Networks and Their Spherical Curvature with Tunable Opening-Closing》. The information in the text is summarized as follows:

Despite many cationic nanomaterials that have been developed for efficient adsorption of anionic pollutants, tailoring a stable shape with denser cations on the surface for advanced removal capability remains challenging. Here, a new strategy is presented for fabricating two-dimensional (2D) cationic laminas and their curvature based on crosslinking of 2D supramol. networks from hydrogen-bonded trimesic amide derivatives Owing to the distribution of most cations on the surface, two cationic nanostructures from crosslinking of supramol. networks show fast sorption kinetics for anionic pollutants. Notably, the removal capacity of the capsule-like curvature adsorbent is more than twice that of lamina adsorbent for sufficient space around cationic sites in hollow aperture. Moreover, the capsule-like adsorbent is triggered to open and spontaneously release the adsorbed pollutants upon the addition of halogen anions, which can be recovered by subsequent dialysis. Strategy of a capsule-like pocket with tunable opening-closing will provide a new insight for storage and adsorption. 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: 623-24-5Reference of 1,4-Bis(bromomethyl)benzene) was used in this study.

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.Reference of 1,4-Bis(bromomethyl)benzene The most pervasive is the naturally produced bromomethane.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2018,Chen, Zhao; Liu, Gang; Pu, Shouzhi; Liu, Sheng Hua published 《Triphenylamine, carbazole or tetraphenylethylene-based gold(I) complexes: Tunable solid-state room-temperature phosphorescence and various mechanochromic luminescence characteristics》.Dyes and Pigments published the findings.Application In Synthesis of 3,5-Dibromoaniline The information in the text is summarized as follows:

Three novel gold(I) complexes based on triphenylamine, carbazole or tetraphenylethylene moiety were successfully designed and synthesized. Meanwhile, their structures were characterized by NMR spectroscopy and elemental anal. Their solid-state luminescence characteristics were surveyed by photoluminescence spectroscopy, and their distinct mech. stimulus-responsive behaviors in the solid state were also studied by photoluminescence spectroscopy. The solid-state phosphorescence and emission lifetimes of these mononuclear gold(I) complexes 1-3 could be tuned by introducing different fluorophores involving triphenylamine, carbazole or tetraphenylethylene. Also, luminogen 1 exhibited switchable mechanochromic luminescence behavior with color change from yellow to colorless, and the solid-state luminescence on-off mechanochromism between yellow-green and colorless of luminogen 2 could also be observed However, no mechanochromism phenomenon was observed for tetraphenylethene-containing luminogen 3. The powder x-ray diffraction results suggested that the unusual high-contrast mechanochromism characteristics of luminogens 1 and 2 could be attributed to a crystalline-to- amorphous morphol. transition. After reading the article, we found that the author used 3,5-Dibromoaniline(cas: 626-40-4Application In Synthesis of 3,5-Dibromoaniline)

3,5-Dibromoaniline(cas: 626-40-4) belongs to anime. Large quantities of aliphatic amines are made synthetically. The most widely used industrial method is the reaction of alcohols with ammonia at a high temperature, catalyzed by metals or metal oxide catalysts (e.g., nickel or copper). Mixtures of primary, secondary, and tertiary amines are thereby produced.Application In Synthesis of 3,5-Dibromoaniline

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《An Efficient Palladium-Catalyzed α-Arylation of Acetone Below its Boiling Point》 was published in Synlett in 2020. These research results belong to Richardson, Jeffery; Mutton, Simon P.; Martin, Fionna M.; Walton, Lesley; Ledgard, Andrew J.. Name: 5-Bromobenzo[d][1,3]dioxole The article mentions the following:

The monoarylation of acetone is a powerful transformation, but is typically performed at temperatures significantly in excess of its b.p. Conditions described for performing the reaction at ambient temperatures led to significant dehalogenation when applied to a complex aryl halide. The attempts to overcome both issues in the context of our drug-discovery program was described. In the experimental materials used by the author, we found 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

The author of 《Combining Flavin Photocatalysis and Organocatalysis: Metal-Free Aerobic Oxidation of Unactivated Benzylic Substrates》 were Zelenka, Jan; Svobodova, Eva; Tarabek, Jan; Hoskovcova, Irena; Boguschova, Veronika; Bailly, Sarah; Sikorski, Marek; Roithova, Jana; Cibulka, Radek. And the article was published in Organic Letters in 2019. Category: bromides-buliding-blocks The author mentioned the following in the article:

The authors report a system with ethylene-bridged flavinium salt I which catalyzes the aerobic oxidation of toluenes and benzyl alcs. with high oxidation potential (Eox > +2.5 V vs SCE) to give the corresponding benzoic acids under visible light irradiation This is caused by the high oxidizing power of excited I (E(I*) = +2.67 V vs SCE) involved in photooxidation and by the accompanying dark organocatalytic oxygenation provided by the in situ formed flavin hydroperoxide I-OOH. In the part of experimental materials, we found many familiar compounds, such as 4-Bromobenzoic acid(cas: 586-76-5Category: bromides-buliding-blocks)

4-Bromobenzoic acid(cas: 586-76-5) has been used to study the metabolic fate of 2-,3-and 4-bromo benzoic acids in rat hepatocytes incubation using high temperature liquid chromatography.Category: bromides-buliding-blocks It was used in bromine-specific detection of the metabolites of 2-,3-and 4-bromobenzoic acid in the urine and bile of rats by inductively coupled plasma mass spectrometry.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Guo, Jiawei; Liu, Song; Pang, Qinjiao; Zhang, Hongyun; Gao, Lu; Chen, Li; Song, Zhenlei published an article in Organic Letters. The title of the article was 《Synthesis of Silacyclohexanones from Divinylsilanes and Allylamines by a Rh-Catalyzed Cyclization》.Product Details of 2675-79-8 The author mentioned the following in the article:

An efficient synthesis of silacyclohexanones bearing a variety of silyl substituents was developed by a [Rh(coe)2Cl]2/PCy3-catalyzed cyclization of divinylsilanes with Jun’s allylamine. The silacyclohexanones can be oxidized with DDQ to give the corresponding silacyclohexadienones, which are further transformed into Si analog of 2-deoxystreptamine or exo-alkylidenesilacyclohexadienes.1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8Product Details of 2675-79-8) was used in this study.

1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8) is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff.Product Details of 2675-79-81-Bromo-3,4,5-trimethoxybenzene can be used to synthesize N,N′-diarylated indolo[3,2-b]carbazole derivatives, which can find applications in electrophotography.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Singh, Bara; Bankar, Siddheshwar K.; Ramasastry, S. S. V. published an article in Organic Letters. The title of the article was 《Pd-Catalyzed Nazarov-Type Cyclization: Application in the Total Synthesis of β-Diasarone and Other Complex Cyclopentanoids》.HPLC of Formula: 2675-79-8 The author mentioned the following in the article:

Author describe the palladium-catalyzed Nazarov-type cyclization of easily accessible (hetero)arylallyl acetates to pentannulated (hetero)arenes. This method provides ready access to various types of bi-, tri-, tetra-, and pentacyclic cyclopentanoids under neutral conditions. The synthetic utility is further demonstrated in the first total synthesis of β-diasarone (I) and several other complex cyclopentanoids relevant to medicinal chem. and materials science. The experimental process involved the reaction of 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8HPLC of Formula: 2675-79-8)

1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8) is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff.HPLC of Formula: 2675-79-81-Bromo-3,4,5-trimethoxybenzene can be used to synthesize N,N′-diarylated indolo[3,2-b]carbazole derivatives, which can find applications in electrophotography.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Yan, Liwei; Saha, Ankur; Zhao, Wei; Neal, Jennifer F.; Chen, Yusheng; Flood, Amar H.; Allen, Heather C. published an article in Chemical Science. The title of the article was 《Recognition competes with hydration in anion-triggered monolayer formation of cyanostar supra-amphiphiles at aqueous interfaces》.Application of 2675-79-8 The author mentioned the following in the article:

The triggered self-assembly of surfactants into organized layers at aqueous interfaces is important for creating adaptive nanosystems and understanding selective ion extraction While these transformations require mol. recognition, the underlying driving forces are modified by the local environment in ways that are not well understood. Herein, we investigate the role of ion binding and ion hydration using cyanosurf, which is composed of the cyanostar macrocycle, and its binding to anions that are either size-matched or mis-matched and either weakly or highly hydrated. We utilize the supra-amphiphile concept where anion binding converts cyanosurf into a charged and amphiphilic complex triggering its self-organization into monolayers at the air-water interface. Initially, cyanosurf forms aggregates at the surface of a pure water solution When the weakly hydrated and size-matched hexafluorophosphate (PF6-) and perchlorate (ClO4-) anions are added, the macrocycles form distinct monolayer architectures. Surface-pressure isotherms reveal significant reorganization of the surface-active mols. upon anion binding while IR reflection absorption spectroscopy show the ion-bound complexes are well ordered at the interface. Vibrational sum frequency generation spectroscopy shows the water mols. in the interfacial region are highly ordered in response to the charged monolayer of cyanosurf complexes. Consistent with the importance of recognition, we find the smaller mis-matched chloride does not trigger the transformation. However, the size-matched phosphate (H2PO4-) also does not trigger monolayer formation indicating hydration inhibits its interfacial binding. These studies reveal how anion-selective recognition and hydration both control the binding and thus the switching of a responsive mol. interface. The experimental process involved the reaction of 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8Application of 2675-79-8)

1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8) is an important raw material and intermediate used in organic synthesis, pharmaceuticals, agrochemicals and dyestuff.Application of 2675-79-81-Bromo-3,4,5-trimethoxybenzene can be used to synthesize N,N′-diarylated indolo[3,2-b]carbazole derivatives, which can find applications in electrophotography.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Shan, Chao; Xu, Jinping; Cao, Liming; Liang, Chaoming; Cheng, Ruihua; Yao, Xiantong; Sun, Maolin; Ye, Jinxing published an article in Organic Letters. The title of the article was 《Rapid Synthesis of α-Chiral Piperidines via a Highly Diastereoselective Continuous Flow Protocol》.Electric Literature of C7H13BrO2 The author mentioned the following in the article:

A practical continuous flow protocol has been developed using readily accessible N-(tert-butylsulfinyl)-bromoimine and Grignard reagents, providing various functionalized piperidines (34 examples) in superior results (typically >80% yield and with >90:10 dr) within minutes. The high-performance scale-up is smoothly carried out, and efficient synthesis of the drug precursor further showcases its utility. This flow process offers rapid and scalable access to enantioenriched α-substituted piperidines. In addition to this study using Ethyl 5-bromovalerate, there are many other studies that have used Ethyl 5-bromovalerate(cas: 14660-52-7Electric Literature of C7H13BrO2) was used in this study.

Ethyl 5-bromovalerate(cas: 14660-52-7) belongs to bromides. Most organobromine compounds, like most organohalide compounds, are relatively nonpolar. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents.Electric Literature of C7H13BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Zhu, Keyong; Cao, Mengting; Zhao, Guanzhen; Zhao, Jingjing; Li, Pan published an article in Organic Letters. The title of the article was 《Visible Light-Promoted Diazoacetates and Nitriles Generating Nitrilium Ions Trapped by Benzotriazoles and Carboxylic Acids》.Computed Properties of C9H9BrO2 The author mentioned the following in the article:

A visible light-promoted generation of nitrilium ions from diazoacetates and nitriles was developed. The reaction utilized visible light transformation of diazoacetates to the free carbene that was trapped by nitriles to generate nitrilium ions, followed by nucleophilic attack on the benzotriazoles and carboxylic acids. This protocol provided an efficient and practical approach to N-imidoylbenzotriazoles and diacylglycine esters in good to excellent yields. In the experiment, the researchers used many compounds, for example, Benzyl 2-bromoacetate(cas: 5437-45-6Computed Properties of C9H9BrO2)

Benzyl 2-bromoacetate(cas: 5437-45-6) belongs to benzyl acetate. Benzyl acetate is a synthetic chemical produced for industry from benzyl alcohol and acetic acid, but is also naturally present in the essential oils of many plants, including jasmine and ylang ylang.Computed Properties of C9H9BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Liang, Hui; Ji, Dong-Sheng; Xu, Guo-Qiang; Luo, Yong-Chun; Zheng, Haixue; Xu, Peng-Fei published an article in Chemical Science. The title of the article was 《Metal-free, visible-light induced enantioselective three-component dicarbofunctionalization and oxytrifluoromethylation of enamines via chiral phosphoric acid catalysis》.HPLC of Formula: 5437-45-6 The author mentioned the following in the article:

Using diverse carbon-centered radical precursors and electron-rich (hetero)aromatics and alcs. as nucleophiles, a visible-light driven chiral phosphoric acid (CPA) catalyzed asym. intermol., three-component radical-initiated dicarbofunctionalization and oxytrifluoromethylation of enamines was developed, which provides a straightforward access to chiral arylmethylamines, aza-hemiacetals and γ-amino acid derivatives with excellent enantioselectivity. As far as this is the first example of constructing a chiral C-O bond using simple alcs. via visible-light photocatalysis. Chiral phosphoric acid played multiple roles in the reaction, including controlling the reaction stereoselectivity and promoting the generation of radical intermediates by activating Togni’s reagent. Mechanistic studies also suggested the importance of the N-H bond of the enamine and indole for the reactions. In addition to this study using Benzyl 2-bromoacetate, there are many other studies that have used Benzyl 2-bromoacetate(cas: 5437-45-6HPLC of Formula: 5437-45-6) was used in this study.

Benzyl 2-bromoacetate(cas: 5437-45-6) belongs to benzyl acetate. Benzyl acetate is a synthetic chemical produced for industry from benzyl alcohol and acetic acid, but is also naturally present in the essential oils of many plants, including jasmine and ylang ylang.HPLC of Formula: 5437-45-6

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary