Tag: 200-300

《Trapping of Transient Thienyllithiums Generated by Deprotonation of 2,3- or 2,5-Dibromothiophene in a Flow Microreactor》 was published in Synlett in 2020. These research results belong to Okano, Kentaro; Yamane, Yoshiki; Nagaki, Aiichiro; Mori, Atsunori. Formula: C4H2Br2S The article mentions the following:

Selective trapping of (4,5-dibromo-2-thienyl)lithium, known to undergo halogen dance, was achieved in a flow microreactor. This transient thienyllithium, generated by mixing 2,3-dibromothiophene and lithium diisopropylamide at -78°C for 1.6 s, reacted with benzaldehyde. The reaction system is also applicable to other carbonyl compounds to afford the corresponding adducts in good yields. Moreover, the established conditions permit the conversion of 2,5-dibromothiophene into a mixture of the two constitutional isomers. The contrasting results are discussed on the basis of the reaction pathway. In the experiment, the researchers used 2,5-Dibromothiophene(cas: 3141-27-3Formula: C4H2Br2S)

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.Formula: C4H2Br2S

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《An imidazole coumarin derivative enhances the antiviral response to spring viremia of carp virus infection in zebrafish》 were Liu, Lei; Hu, Yang; Lu, Jianfei; Wang, Gaoxue. And the article was published in Virus Research in 2019. Electric Literature of C6H12Br2 The author mentioned the following in the article:

As an efficient pathogen resulting in economic impact in aquaculture, spring viremia of carp virus (SVCV) causes devastating disease in cyprinids. Based on the previous study that 7-(6-(2-methyl-imidazole))-coumarin (D5) exhibited anti-SVCV activity in fish cells, we hypothesized that D5 may be useful as a potential therapeutic agent for controlling SVCV infection in vivo. In this study, we verified that D5 inhibited SVCV replication in zebrafish, with reducing 22.5% mortality of SVCV-infected fish. Further data suggested that coumarin D5 was more stable with a prolonged inhibitory half-life in the early stage of virus infection (1-4 days). Consistent with above results, D5 decreased the viral titer in fish body and repressed SVCV glycoprotein gene expression in virus sensitive tissues (kidney and spleen) in the early stage of virus infection. In addition, the results replied that D5 elicited an innate immune response in non-viral infected zebrafish by up-regulating the expression of interferon genes (IFNγ, IFNφ1, IFNφ2 and RIG-1). D5 also enhanced the levels of antioxidant-related gene transcription and enzyme activities in SVCV-infected zebrafish, suggesting that D5 exhibited an antioxidant protection on fish by keeping the balance of redox state. Therefore, D5 is a potential therapeutic agent for the devastating fish rhabdovirus infections. The experimental part of the paper was very detailed, including the reaction process of 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 solvent processable and conductive polyfluorene ionomers for alkaline fuel cell applications; synthesis of cross-linkable regioregular poly(3-(5-hexenyl)thiophene) (P3HNT) for stabilizing the film morphology in polymer photovoltaic cells.Electric Literature of C6H12Br2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,ChemPlusChem included an article by Taing, Hi; Cassar, Adam Michael; Ocheje, Michael Udunyi; Rondeau-Gagne, Simon; El-Assaad, Tarek H.; Sharabati, Christa A.; Kaafarani, Bilal R.; Eichhorn, S. Holger. Category: bromides-buliding-blocks. The article was titled 《Self-Assembly of Board-Shaped Diketopyrrolopyrrole and Isoindigo Mesogens into Columnar π-π Stacks》. The information in the text is summarized as follows:

Diketopyrrolopyrrole and isoindigo are com. important dyes that have recently found broad application as electron acceptor and light-absorbing groups in organic semiconductors. Their self-assembly into specific supramol. structures to control optoelectronic properties has been hampered by limited options for substitution and their high propensity for crystallization Reported here is a mol. design that directs self-assembly into previously elusive columnar mesophases of π-π stacking cores. Although attachment of bis(trisoctyloxyphenyl)-1,3,5-triazine groups to both ends of diketopyrrolopyrrole-thiophene and isoindigo cores generated mesomorphic dyes of similar overall shapes and dimensions, distinct differences in their mesomorphism and optoelectronic properties were observed In the experiment, the researchers used many compounds, for example, 1-Bromo-3,4,5-trimethoxybenzene(cas: 2675-79-8Category: bromides-buliding-blocks)

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.Category: bromides-buliding-blocks1-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

《Visible-Light-Promoted Oxidative Amidation of Bromoalkynes with Anilines: An Approach to α-Ketoamides》 was written by Ni, Ke; Meng, Ling-Guo; Wang, Kuai; Wang, Lei. Safety of 3,5-DibromoanilineThis research focused onvisible light oxidative amidation bromoalkyne aniline; ketoamide preparation. The article conveys some information:

A convenient and practical synthetic route to α-ketoamides from bromoalkynes and anilines through phototriggered organic transformations via a C-N cross-coupling and an oxidation of CC was developed. The reaction could be furnished without an external photocatalyst at ambient conditions, and a wide range of α-ketoamides were obtained in good yields. The experimental process involved the reaction of 3,5-Dibromoaniline(cas: 626-40-4Safety of 3,5-Dibromoaniline)

3,5-Dibromoaniline(cas: 626-40-4) belongs to anime. Primary amines having a tertiary alkyl group (R3CNH2) are difficult to prepare with most methods but are made industrially by the Ritter reaction. In this method a tertiary alcohol reacts with hydrogen cyanide (HCN) in the presence of a concentrated strong acid; a formamide, RNH―CHO, is formed first, which then undergoes hydrolysis.Safety of 3,5-Dibromoaniline

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Related Products of 626-40-4In 2021 ,《Micellar Suzuki Cross-Coupling between Thiophene and Aniline in Water and under Air》 was published in Organics. The article was written by Yousif, Dawod; Tombolato, Silvia; Ould Maina, Elmehdi; Po, Riccardo; Biagini, Paolo; Papagni, Antonio; Vaghi, Luca. The article contains the following contents:

The Suzuki-Miyaura cross-coupling reaction plays a fundamental role in modern synthetic organic chem., both in academia and industry. For this reason, scientists continue to search for new, more effective, cheaper and environmentally friendly procedures. Recently, micellar synthetic chem. has been demonstrated to be an excellent strategy for achieving chem. transformations in a more efficient way, thanks to the creation of nanoreactors in aqueous environments using selected surfactants. In particular, the cheap and com. available surfactant Kolliphor EL (a polyethoxylated castor oil derivative) has been used with success to achieve metal-catalyzed transformations in water with high yields and short reaction times, with the advantage of using air-sensitive catalysts without the need for inert atm. In this work, the Kolliphor EL methodol. was applied to the Suzuki cross-coupling reaction between thiophene and aniline, using the highly effective catalyst Pd(dtbpf)Cl2. The cross-coupling products were achieved at up to 98% yield, with reaction times of up to only 15 min, working at room temperature and without the need for inert atm. The results came from multiple reactions, including the reaction of 3,5-Dibromoaniline(cas: 626-40-4Related Products of 626-40-4)

3,5-Dibromoaniline(cas: 626-40-4) belongs to anime. Hydrogen peroxide (H2O2) and peroxy acids generally add an oxygen atom to the nitrogen of amines. With primary amines, this step is normally followed by further oxidation, leading to nitroso compounds, RNO, or nitro compounds, RNO2. Secondary amines are converted to hydroxylamines, R2NOH, and tertiary amines to amine oxides, R3NO.Related Products of 626-40-4

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Recommanded Product: Methyl 3-(bromomethyl)benzoateIn 2016 ,《Design, synthesis and biological evaluation of stilbene derivatives as novel inhibitors of protein Tyrosine Phosphatase 1B》 was published in Molecules. The article was written by He, Haibing; Ge, Yinghua; Dai, Hong; Cui, Song; Ye, Fei; Jin, Jia; Shi, Yujun. The article contains the following contents:

By imitating the scaffold of lithocholic acid (LCA), a natural steroidal compound displaying Protein Tyrosine Phosphatase 1B (PTP1B) inhibitory activity, a series of stilbene derivatives containing phenyl-substituted isoxazoles were designed and synthesized. The structures of the title compounds were confirmed by 1H-NMR, 13C-NMR and HRMS. Activities of the title compounds were evaluated on PTP1B and the homologous enzyme TCPTP by using a colorimetric assay. Most of the target compounds had good activities against PTP1B. Among them, compound 29 (IC50 = 0.91 ± 0.33 μM), characterized by a 5-(2,3-dichlorophenyl) isoxazole moiety, exhibited an activity about 14-fold higher than the lead compound LCA and a 4.2-fold selectivity over TCPTP. Compound 29 was identified as a competitive inhibitor of PTP1B with a Ki value of 0.78 μM in enzyme kinetic studies. In the experiment, the researchers used Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8Recommanded Product: Methyl 3-(bromomethyl)benzoate)

Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals.Recommanded Product: Methyl 3-(bromomethyl)benzoate The most pervasive is the naturally produced bromomethane.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Divergent Synthesis of Isoquinolone and Isocoumarin Derivatives by the Annulation of Benzoic Acid with N-Vinyl Amide》 were Sun, Rui; Yang, Xiao; Li, Qianggen; Xu, Ke; Tang, Juan; Zheng, Xueli; Yuan, Maolin; Fu, Haiyan; Li, Ruixiang; Chen, Hua. And the article was published in Organic Letters in 2019. Formula: C7H5BrO2 The author mentioned the following in the article:

A simple and efficient method for the synthesis of isoquinolone and isocoumarin derivatives is reported. The method for the first time provides a one-step divergent synthesis of important isoquinolone and isocoumarin skeletons from benzoic acid by switching the coupling partners. In addition, a reliable mechanism has been proposed on the basis of exptl. investigations, including kinetic isotope effect experiments, 13C labeling experiments, time-tracking experiments, and competitive experiments, as well as DFT calculation studies. The results came from multiple reactions, including the reaction of 4-Bromobenzoic acid(cas: 586-76-5Formula: C7H5BrO2)

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.Formula: C7H5BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Selective recognition of Fe3+ and CrO42- ions using a Zn(II) metallacycle and a Cd(II) coordination polymer and their heterogeneous catalytic application》 were Rani, Pooja; Sharma, Anjali; Husain, Ahmad; Kumar, Gulshan; Kaur, Harpreet; Bhasin, K. K.; Kumar, Girijesh. And the article was published in CrystEngComm in 2019. HPLC of Formula: 626-40-4 The author mentioned the following in the article:

We report the syntheses and structural characterization of a Zn(II) metallacycle [Zn2{(L)2(DMF)2(NO3)2}]·(NO3)2 (1) along with a Cd(II) coordination polymer [{Cd1(L)2(DMF)2}·(NO3)2]n (2) (where L = N,N′-bis-(3-pyridyl)terephthalamide; DMF = dimethylformamide) and their utilization as fluorescent probes for highly selective recognition (turn-off) of Fe3+ and CrO42- ions. Both 1 and 2 showed high fluorescence stability in aqueous solution and selectively detected Fe3+ and CrO42- ions with high quenching constants and low detection limits of 2.34 × 106 M-1 and 0.153 μM for Fe3+, 6.72 × 105 and 0.205 μM for CrO42- (for 1); 3.25 × 106 and 0.193 μM for Fe3+, 6.94 × 105 and 0.155 μM for CrO42- (for 2). Notably, ligand L itself did not display any type of recognition for any ions in DMF as well as in aqueous media. Moreover, 1 and 2 were also employed as heterogeneous catalysts for the ring-opening reaction (ROR) of epoxides with various assorted amines and up to 95% yield (TON, 47.5 and TOF, 11.9 h-1) was observed with perfect regioselectivity in the case of styrene oxide. In the experiment, the researchers used many compounds, for example, 3,5-Dibromoaniline(cas: 626-40-4HPLC of Formula: 626-40-4)

3,5-Dibromoaniline(cas: 626-40-4) belongs to anime. Aniline, ethanolamines, and several other amines are major industrial commodities used in making rubber, dyes, pharmaceuticals, and synthetic resins and fibres and for a host of other applications. Most of the numerous methods for the preparation of amines may be broadly divided into two groups: (1) chemical reduction (replacement of oxygen with hydrogen atoms in the molecule) of members of several other classes of organic nitrogen compounds and (2) reactions of ammonia or amines with organic compounds.HPLC of Formula: 626-40-4

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《NHC-Catalyzed Aldol-Like Reactions of Allenoates with Isatins: Regiospecific Syntheses of γ-Functionalized Allenoates》 were Li, Sha; Tang, Ziwei; Wang, Yang; Wang, Dan; Wang, Zhanlin; Yu, Chenxia; Li, Tuanjie; Wei, Donghui; Yao, Changsheng. And the article was published in Organic Letters in 2019. Related Products of 5437-45-6 The author mentioned the following in the article:

An N-heterocyclic carbene (NHC) catalyzed γ-specific aldol-like reaction between allenoates and isatins has been achieved under mild conditions, giving trisubstituted allene derivatives bearing isatin moiety in moderate to good yields with high diastereoselectivity and excellent atom efficiency. The DFT computations indicated that the formation of the γ-adduct was more energetically favorable than that of the α-adduct. The result reported herein opens a new route for NHC-promoted allenoate-involved reaction. In addition to this study using Benzyl 2-bromoacetate, there are many other studies that have used Benzyl 2-bromoacetate(cas: 5437-45-6Related Products of 5437-45-6) was used in this study.

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.Related Products of 5437-45-6

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Mixed Fluorinated/Hydrogenated Self-Assembled Monolayer-Protected Gold Nanoparticles: In Silico and In Vitro Behavior》 were Marson, Domenico; Guida, Filomena; Sologan, Maria; Boccardo, Silvia; Pengo, Paolo; Perissinotto, Fabio; Iacuzzi, Valentina; Pellizzoni, Elena; Polizzi, Stefano; Casalis, Loredana; Pasquato, Lucia; Pacor, Sabrina; Tossi, Alessandro; Posocco, Paola. And the article was published in Small in 2019. Formula: C8H15BrO2 The author mentioned the following in the article:

Gold nanoparticles (AuNPs) covered with mixtures of immiscible ligands present potentially anisotropic surfaces that can modulate their interactions at complex nano-bio interfaces. Mixed, self-assembled, monolayer (SAM)-protected AuNPs, prepared with incompatible hydrocarbon and fluorocarbon amphiphilic ligands, are used here to probe the mol. basis of surface phase separation and disclose the role of fluorinated ligands on the interaction with lipid model membranes and cells, by integrating in silico and exptl. approaches. These results indicate that the presence of fluorinated amphiphilic ligands enhances the membrane binding ability and cellular uptake of gold nanoparticles with respect to those coated only with hydrogenated amphiphilic ligands. For mixed monolayers, computational results suggest that ligand phase separation occurs on the gold surface, and the resulting anisotropy affects the number of contacts and adhesion energies with a membrane bilayer. This reflects in a diverse membrane interaction for NPs with different surface morphologies, as determined by surface plasmon resonance, as well as differential effects on cells, as observed by flow cytometry and confocal microscopy. Overall, limited changes in monolayer features can significantly affect NP surface interfacial properties, which, in turn, affect the interaction of SAM-AuNPs with cellular membranes and subsequent effects on cells. The experimental process involved the reaction of 8-Bromooctanoic acid(cas: 17696-11-6Formula: C8H15BrO2)

8-Bromooctanoic acid(cas: 17696-11-6) acid is used in the synthesis of 8-(N-Methyl-4,4′-bipyridinyl)- octanoic acid. 8-Mercaptooctanoic acid was prepared from 8-bromooctanoic acid. And 8-Bromooctanoic Acid is a useful compound for sonodynamic therapy.Formula: C8H15BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary