Tag: 200-300

《Photocatalytic Partial Oxidation of 5-Hydroxymethylfurfural (HMF) to 2,5-Diformylfuran (DFF) Over a Covalent Triazine Framework in Water》 was written by Ayed, Cyrine; Huang, Wei; Kizilsavas, Goenuel; Landfester, Katharina; Zhang, Kai A. I.. Recommanded Product: 2,5-Dibromothiophene And the article was included in ChemPhotoChem in 2020. The article conveys some information:

Conversion of biomass into high value products via environmentally benign processes remains a challenging task for chemists. Photocatalytic partial oxidation of the biochem. 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF) has attracted much attention as DFF is known to be a pivotal precursor in the biochem. industry. Previously, this reaction has been catalyzed with transition metal based catalytic systems in organic solvents. Herein, we report the use of a covalent triazine framework (CTF) as a highly stable and porous organic photoactive polymer for the photocatalytic partial oxidation of HMF to DFF in water, using mol. oxygen as a green oxidant. The photocatalyst showed high efficiency in affording DFF as the target product with good reusability. In addition to this study using 2,5-Dibromothiophene, there are many other studies that have used 2,5-Dibromothiophene(cas: 3141-27-3Recommanded Product: 2,5-Dibromothiophene) was used in this study.

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.Recommanded Product: 2,5-Dibromothiophene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Synthesis and biological evaluation of new curcumin analogs inhibiting osteoclastogenesis》 was published in Heterocycles in 2020. These research results belong to Sugawara, Aoi; Ohashi, Toshika; Ogawa, Satoshi; Matsumoto, Naomi; Nakanishi-Matsui, Mayumi; Tamura, Satoru; Kawano, Tomikazu. Safety of 2,5-Dibromothiophene The article mentions the following:

A series of curcumin analogs (1-3) were newly designed and synthesized for the development of therapeutic agents for osteoporosis. Among the synthesized compounds, 2,5-substituted conjugated thiophene derivative (1a) and the corresponding pyrazine derivative (1c) were shown to be potential leads for the development of anti-osteoclastogenesis agent.2,5-Dibromothiophene(cas: 3141-27-3Safety of 2,5-Dibromothiophene) was used in this study.

2,5-Dibromothiophene(cas: 3141-27-3) , is mainly used as pharmaceutical intermediate and synthesis intermediate. 2,5-Dibromothiophene may be used in the preparation of soluble α,ω-diformyl-a-oligothiophenes.Safety of 2,5-Dibromothiophene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Understanding of the Kinetic Stability of cis- Isomer of Azobenzenes through Kinetic and Computational Studies》 was published in ChemistrySelect in 2020. These research results belong to Das, Dhiraj; Yadav, Manish K.; Singla, Labhini; Kumar, Atul; Karanam, Maheswararao; Dev, Sagarika; Choudhury, Angshuman R.. Name: 3,5-Dibromoaniline The article mentions the following:

A library of halogen-substituted azobenzenes (ABs) have been synthesized and structurally characterized by single crystal X-ray diffraction technique. Azobenzenes studied herein display fast photoswitching properties. Kinetics of cis- → trans- isomerization has been studied using UV-VIS spectroscopy and the rate constant for this transformation were determined Optimization of probable conformers of the cis-isomer and the corresponding transition state (TS) was carried out to determine the energy of activation. The Time-Dependent D. Functional Theory (TD-DFT) calculations were also performed to gain insight into the photoisomerization. Our results indicate that the fluorinated compounds display better kinetic stability of the cis-isomer compared to the corresponding chloro and bromo analogs. In the experiment, the researchers used many compounds, for example, 3,5-Dibromoaniline(cas: 626-40-4Name: 3,5-Dibromoaniline)

3,5-Dibromoaniline(cas: 626-40-4) belongs to anime. Acylation is one of the most important reactions of primary and secondary amines; a hydrogen atom is replaced by an acyl group (a group derived from an acid, such as RCOOH or RSO3H, by removal of ―OH, such as RC(=O)―, RS(O)2―, and so on). Reagents may be acid chlorides (RCOC1, RSO2C1), anhydrides ((RCO)2O), or even esters (RCOOR′); the products are amides of the corresponding acids.Name: 3,5-Dibromoaniline

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Arylsilylation of Electron-Deficient Alkenes via Cooperative Photoredox and Nickel Catalysis》 was published in ACS Catalysis in 2020. These research results belong to Zhang, Zhikun; Hu, Xile. Quality Control of 1-Bromo-4-(trifluoromethyl)benzene The article mentions the following:

Carbosilylation of alkenes can be an efficient approach to the synthesis of organosilicon compounds However, few general methods of carbosilylation are known. Here, we introduce a strategy for arylsilylation of electron-deficient terminal alkenes by combining photoredox-catalyzed silyl radical generation, innate reactivity of silyl radical with alkene, and Ni-catalyzed aryl-alkyl cross-coupling. This cooperative photoredox and nickel catalysis operates under mild conditions. It employs readily available alkenes, aryl bromides, and silane as reagents, and it produces useful synthetic building blocks in a modular manner. The experimental part of the paper was very detailed, including the reaction process of 1-Bromo-4-(trifluoromethyl)benzene(cas: 402-43-7Quality Control of 1-Bromo-4-(trifluoromethyl)benzene)

1-Bromo-4-(trifluoromethyl)benzene(cas: 402-43-7) 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. Dehydrobromination, Grignard reactions, reductive coupling, Wittig reaction, and several nucleophilic substitution reactions are some of the principal reactions which involve organic bromides. Quality Control of 1-Bromo-4-(trifluoromethyl)benzene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Organic Letters included an article by Zeng, Rong; Shan, Changyu; Liu, Ming; Jiang, Kun; Ye, Ying; Liu, Tian-Yu; Chen, Ying-Chun. Category: bromides-buliding-blocks. The article was titled 《[4 + 1 + 1] Annulations of α-Bromo Carbonyls and 1-Azadienes toward Fused Benzoazaheterocycles》. The information in the text is summarized as follows:

An unexpected [4 + 1 + 1] annulation between α-bromo carbonyls and 1-azadienes, derived from 2-methylenebenzofuran-3(2H)-ones or 2-methylenebenzo[b]thiophene-3(2H)-ones, was observed in the presence of DABCO and Cs2CO3. These reactions stand in contrast to the common [4 + 1] cyclization reactions of azadienes with the related sulfonium ylides. A range of fused benzofuro[3,2-b]pyridines and benzo[4,5]thieno[3,2-b]pyridines were efficiently constructed in fair to excellent yields. In the part of experimental materials, we found many familiar compounds, such as Benzyl 2-bromoacetate(cas: 5437-45-6Category: bromides-buliding-blocks)

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.Category: bromides-buliding-blocks

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Organic Letters included an article by Si, Xiaojia; Zhang, Lumin; Hashmi, A. Stephen K.. Recommanded Product: 402-43-7. The article was titled 《Benzaldehyde- and Nickel-Catalyzed Photoredox C(sp3)-H Alkylation/Arylation with Amides and Thioethers》. The information in the text is summarized as follows:

Herein a synergistic combination of a nickel catalyst and benzaldehyde for the use of amides and thioethers in C(sp3)-H alkylation and arylation reactions employing simple aryl or alkyl halides is reported. This method provides a simple and cheap strategy for the direct functionalization of amides and thioethers. Readily available starting materials, mild reaction conditions, a good functional-group tolerance, and a broad substrate scope make this methodol. attractive and practical for pharmaceutical and synthetic chem. The experimental part of the paper was very detailed, including the reaction process of 1-Bromo-4-(trifluoromethyl)benzene(cas: 402-43-7Recommanded Product: 402-43-7)

1-Bromo-4-(trifluoromethyl)benzene(cas: 402-43-7) 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. Recommanded Product: 402-43-7

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Computed Properties of C9H11BrO3In 2019 ,《Tetradentate platinum(II) complexes: Synthesis, photophysical properties, liquid crystalline characteristics and charge transport behaviour》 was published in Dyes and Pigments. The article was written by Zhao, Li; Yang, Bo; Zeng, Longwei; Luo, Kaijun; Wang, Haifeng; Ni, Hailiang; Yang, Congling; Li, Quan. The article contains the following contents:

Three new tetradentate phosphorescent Pt(II) complexes (Pt6, Pt12 and Pt16) with half-disk mol. structure were designed and synthesized, which are based on tetradentate ligands with six alkoxyl chains on the periphery, (6,6′-bis((3′,4′,5′-alkoxy-[1,1′-biphenyl]-4-yl)oxy)-2,2′-bipyridine). All complexes show red phosphorescence in dichloromethane solution (λem ≈ 640 nm) with quantum yields at 4.3-6.7% and phosphorescent lifetimes at 0.46-0.55 μs in degassed dichloromethane solution Among these complexes, the complex, Pt12, with 12 carbons chain lengths shows columnar mesophase with liquid crystal temperature range of – 22.0° to 77.8°, which was confirmed via polarized optical microscopy (POM), DSC and XRD. The complex, Pt12, exhibits ambipolar carrier transport behaviors, which was confirmed by the space charge limited current (SCLC) measurement. Moreover, the carrier mobility in mesogenic state is two orders of magnitudes greater than that in the amorphous state, showing ordering packing in liquid crystalline phase can facilitate the charge transport. In the experiment, the researchers used 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8Computed Properties of C9H11BrO3)

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.Computed Properties of C9H11BrO31-Bromo-3,4,5-trimethoxybenzene can be used to synthesize analogs of HA14-1, which shows promising anticancer properties.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Application of 586-76-5In 2020 ,《Palladium-Catalyzed N-Acylation of Tertiary Amines by Carboxylic Acids: A Method for the Synthesis of Amides》 was published in Organic Letters. The article was written by Li, Zhaohui; Liu, Long; Xu, Kaiqiang; Huang, Tianzeng; Li, Xinyi; Song, Bin; Chen, Tieqiao. The article contains the following contents:

A palladium-catalyzed N-acylation of tertiary amines by carboxylic acids was achieved through C-N cleavage. This reaction showed a wide substrate scope. Both aromatic and aliphatic acids served well as the acylating reagents and coupled with tertiary amines to gave the corresponding amides RC(O)N(R1)2 [R = n-pentyl, Ph, 2-naphthyl, etc.; R1 = Me, Et, n-Pr] in good to excellent yields. With the strategy, bioactive carboxylic acids were also efficiently modified, highlighting the synthetic value of the process in organic synthesis. In the experiment, the researchers used 4-Bromobenzoic acid(cas: 586-76-5Application of 586-76-5)

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. 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.Application of 586-76-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Neira, Iago; Peinador, Carlos; Garcia, Marcos D. published an article in Organic Letters. The title of the article was 《CB[7]- and CB[8]-Based [2]-(Pseudo)rotaxanes with Triphenylphosphonium-Capped Threads: Serendipitous Discovery of a New High-Affinity Binding Motif》.HPLC of Formula: 623-24-5 The author mentioned the following in the article:

The synthesis of new triphenylphosphonium-capped cucurbit[7]uril (CB[7])- and cucurbit[8]uril (CB[8])-based [2]rotaxanes was achieved by a simultaneous threading-capping strategy. While the use of CB[7] produced the designed [2]rotaxane, attempts to obtain the CB[8] analog were unsuccessful due to the unexpected strong interaction found between the host and the phosphonium caps leading to pseudo-heteroternary host-guest complexes. This unusual binding motif has been extensively studied exptl., with results in good agreement with those obtained by dispersion-corrected DFT methods. In the experiment, the researchers used many compounds, for example, 1,4-Bis(bromomethyl)benzene(cas: 623-24-5HPLC of Formula: 623-24-5)

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. Dehydrobromination, Grignard reactions, reductive coupling, Wittig reaction, and several nucleophilic substitution reactions are some of the principal reactions which involve organic bromides. HPLC of Formula: 623-24-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Tao, Tao; Fang, Dongsheng; Chen, Yunyun; Fan, Yuting; Lu, Haijie published an article in 2021. The article was titled 《The length effect and color tuning of tetraphenylethylene functionalized oligothiophenes for effective detection of explosives》, and you may find the article in Dyes and Pigments.Computed Properties of C4H2Br2S The information in the text is summarized as follows:

Aggregation-induced fluorescent materials are of great importance in optoelectronics and bioelectronics in solid-state devices. Herein, functionalized oligothiophenes were designed and synthesized with the tetraphenylethylene (TPE) groups to explore the length effect and color tuning for the effective detection of explosives. Remarkably, compounds 2TPE1T and 2TPE2T show an aggregation-induced emission phenomenon, while longer π-conjugated mols. 2TPE3T, 2TPE4T, TPE5T and 2TPE6T show aggregation-caused quenching character, where the reason has been explained based on UV-Vis spectra ranging from 378-446 nm. Furthermore, fluorescent titration experiments demonstrate that dye 2TPE1T has a better response than dye 2TPE2T for nitroaroms. The visual detection limit of 2,6-DNT is 18.2 ng/cm2 in the test strip of 2TPE1T. In addition, there is an exquisitely linear curve between the theor. and exptl. energy levels for TPE functionalized oligothiophenes. The effect of introducing TPE end-capped on the energy gap convergence has also been discussed, showing the energy level correlation of linear fitting combined with a theor. and exptl. perspective. This result not only paves the way toward π-functional materials but also expands their applications. In the part of experimental materials, we found many familiar compounds, such as 2,5-Dibromothiophene(cas: 3141-27-3Computed Properties of C4H2Br2S)

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.Computed Properties of C4H2Br2S

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary