Category: bromides-buliding-blocks

Liu, Zhifang; Li, Zuojie; Du, Tao; Chen, Yan; Wang, Qingpeng; Li, Guoshuai; Liu, Min; Zhang, Ning; Li, Dacheng; Han, Jun published an article in 2021. The article was titled 《Design, synthesis and biological evaluation of dihydro-2-quinolone platinum(IV) hybrids as antitumor agents displaying mitochondria injury and DNA damage mechanism》, and you may find the article in Dalton Transactions.Related Products of 3395-91-3 The information in the text is summarized as follows:

The design of novel platinum(IV) complexes with mitochondria injury competence, besides the DNA damage mechanism, is a promising way to develop new platinum drugs. Herein, dihydro-2-quinolone (DHQLO) as a mitocan was incorporated into the platinum(IV) system for the first time to prepare a new series of DHQLO platinum(IV) compounds Complex 1b could effectively inhibit the proliferation of tumor cells in vitro and in vivo. It accumulated at higher levels in both whole cells and DNA, and easily underwent intercellular reduction to release platinum(II) and DHQLO moieties. The released platinum(II) complex caused serious DNA damage by covalent conjunction with the DNA duplex, and remarkably increased the expression of the γ-H2AX protein. Moreover, 1b also caused serious mitochondria injury to induce mitochondrial membrane depolarization and increase ROS generation. Such actions upon DNA and mitochondria activate the p53 apoptotic pathway synergetically in tumor cells by upregulating the protein p53 and apoptotic proteins caspase9 and caspase3, which efficiently promoted the apoptotic death of tumor cells. Compound 1b with such synergic mechanism exhibited great potential in reversing cisplatin resistance and improving antitumor efficacies. After reading the article, we found that the author used Methyl 3-bromopropanoate(cas: 3395-91-3Related Products of 3395-91-3)

Methyl 3-bromopropanoate(cas: 3395-91-3) belongs to bromides. One prominent application of synthetic organobromine compounds is the use of polybrominated diphenyl ethers as fire-retardants, and in fact fire-retardant manufacture is currently the major industrial use of the element bromine.Related Products of 3395-91-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Hu, Xuefu; Wang, Zhiye; Su, Yuming; Chen, Peican; Jiang, Yibin; Zhang, Cankun; Wang, Cheng published an article in 2021. The article was titled 《Metal-Organic Layers with an Enhanced Two-Photon Absorption Cross-Section and Up-Converted Emission》, and you may find the article in Chemistry of Materials.Application of 4316-58-9 The information in the text is summarized as follows:

Two-photon absorption (TPA) of many chromophores can be enhanced by building them into the structure of metal-organic frameworks (MOFs). However, light scattering of MOFs defocuses the light beam and thus decreases the nonlinear optical effects like TPA. Nanoscale two-dimensional (2D) metal-organic layers (MOLs) are 2D analogs of MOFs with low light scattering. In this work, we obtained a MOL containing tri(4-carboxylic-biphenyl)-4′-amine (H3TCBPA) that exhibited a TPA cross-section of 13 000 ± 2000 GM, which is ~7 times that of the H3TCBPA ligand in homogeneous solution (1850 ± 200 GM). The MOL also gave bright up-converted fluorescence thanks to efficient TPA and a high fluorescence quantum yield. The theor. calculation showed that a large dipole moment of the excited state due to electron redistribution between the ligands and the metal-connecting nodes in the MOL is the reason for the TPA enhancement. This work illustrates MOLs as 2D materials with enhanced TPA for generating bright upconverted fluorescence. The experimental process involved the reaction of Tris(4-bromophenyl)amine(cas: 4316-58-9Application of 4316-58-9)

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 of 4316-58-9

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Tailored Polymers with Complement Activation Ability To Improve Antitumor Immunity》 were Li, Chenxi; Lu, Yue; Chen, Qing; Hu, Haiyang; Zhao, Xiuli; Qiao, Mingxi; Chen, Dawei. And the article was published in Molecular Pharmaceutics in 2019. Safety of Ethyl 3-bromopropanoate The author mentioned the following in the article:

The complement system plays an important role in host innate immunity, and its activation can be exploited as a potential strategy for vaccine adjuvants. Herein, a pH-responsive micellar vaccine platform (COOH-NPs) was developed using a carboxyl-modified diblock copolymer of poly(2-ethyl-2-oxazoline)-poly(D,L-lactide) (COOH-PEOz-PLA). The copolymer self-assembled into micelles with hydroxyl groups shielding on the surface, which activated the complement system for the enhanced immune responses. Compared with the control nanoparticles (OCH3-NPs), COOH-NPs significantly enhanced lymph node-resident dendritic cell maturation, antigen-specific IgG production, antigen-specific CD4+ and CD8+ T-cell activation, and the amount of memory T-cell generation in vivo. Furthermore, immunization with COOH-NPs/OVA in E.G7-OVA tumor-bearing mice not only remarkably inhibited tumor growth but also prolonged the survival of tumor-bearing mice. These results indicated that COOH-NPs with the capability of complement activation efficiently boosted the immune responses for the antitumor effect. The study demonstrated the significance of taking advantage of a complement-activating vaccine platform for cancer immunotherapy.Ethyl 3-bromopropanoate(cas: 539-74-2Safety of Ethyl 3-bromopropanoate) was used in this study.

Ethyl 3-bromopropanoate(cas: 539-74-2) belongs to organobromine compounds.Organobromine chemicals are produced naturally by an array of biological and other chemical processes in our environment. Safety of Ethyl 3-bromopropanoateSome of these compounds are identical to man-made organobromine compounds, such as methyl bromide, bromoform, and bromophenols, but many others are entirely new moleclar entities, often possessing extraordinary and important biological properties.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《A Protocol for the Ortho-Deuteration of Acidic Aromatic Compounds in D2O Catalyzed by Cationic RhIII》 were Garreau, Alyssa L.; Zhou, Hanyang; Young, Michael C.. And the article was published in Organic Letters in 2019. Recommanded Product: 586-76-5 The author mentioned the following in the article:

Methods to catalytically introduce deuterium in synthetically useful yields ortho to a carboxylic acid directing group on arenes typically requires D2 or high catalyst loadings, which makes using these approaches cost prohibitive for large-scale synthesis (equipment and reagent costs resp.). Herein, we present a simplified approach using low catalyst loadings of cationic RhIII and D2O as both deuterium source and solvent and show its application to H/D exchange on various carboxylic acid substrates. The results came from multiple reactions, including the reaction of 4-Bromobenzoic acid(cas: 586-76-5Recommanded Product: 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.Recommanded Product: 586-76-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

The author of 《Nickel-Catalyzed Selective Reduction of Carboxylic Acids to Aldehydes》 were Iosub, Andrei V.; Moravcik, Stefan; Wallentin, Carl-Johan; Bergman, Joakim. And the article was published in Organic Letters in 2019. Product Details of 17696-11-6 The author mentioned the following in the article:

The direct reduction of carboxylic acids to aldehydes is a fundamental transformation in organic synthesis. The combination of an air-stable Ni precatalyst, di-Me dicarbonate as an activator, and silane reductant effects this reduction for a wide variety of substrates, including pharmaceutically relevant structures, in good yields and with no overredn. to alcs. Moreover, this methodol. is scalable, allows access to deuterated aldehydes, and is also compatible with one-pot use of the aldehyde products.8-Bromooctanoic acid(cas: 17696-11-6Product Details of 17696-11-6) was used in this study.

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.Product Details of 17696-11-6

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Tetrahedron Letters included an article by Wang, Hai-Xia; Li, Wen-Peng; Xia, Chao; Xie, Ming-Sheng; Qu, Gui-Rong; Guo, Hai-Ming. Quality Control of Benzyl 2-bromoacetate. The article was titled 《Enantioselective synthesis of chiral carbocyclic pyrimidine nucleosides via asymmetric cyclopropanation》. The information in the text is summarized as follows:

An efficient method to construct chiral cyclopropyl pyrimidine carbocyclic nucleoside analogs bearing a quaternary center was developed via asym. Michael-initiated cyclopropanation. The axis chirality was observed in cyclopropyl pyrimidine carbocyclic nucleoside analogs for the first time, which was caused by the rotationally restricted N-C bond in N-COPh moiety. Using (DHQD)2AQN as the organocatalyst, diverse cyclopropyl pyrimidine carbocyclic nucleoside analogs were generated in 76-93% yields and 73-96% ee. In addition to this study using Benzyl 2-bromoacetate, there are many other studies that have used Benzyl 2-bromoacetate(cas: 5437-45-6Quality Control of Benzyl 2-bromoacetate) 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.Quality Control of Benzyl 2-bromoacetate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Nature Communications included an article by He, Zhi-Tao; Hartwig, John F.. SDS of cas: 7073-94-1. The article was titled 《Palladium-catalyzed α-arylation for the addition of small rings to aromatic compounds》. The information in the text is summarized as follows:

A generally applicable approach to attach small rings to a wide range of aromatic compounds by palladium-catalyzed α-arylation of cyclopropyl, cyclobutyl and azetidinyl esters was reported. The direct α-arylation of cyclopropyl esters and cyclobutyl esters was achieved in high yield by ensuring that rate of coupling exceeded rate of Claisen condensation. The α-arylation of azetidines was achieved without ring opening of strained saturated heterocycle by conducting reactions with an azetidine derivative bearing a benzyl protecting group on nitrogen. Mechanistic studies showed that α-arylation of small rings was challenging because of the weak acidity of α C-H bond (cyclopropanes), strong sensitivity of strained esters to Claisen condensation (cyclobutatanes), or facile decomposition of enolates (azetidinyl esters). In the experiment, the researchers used 1-Bromo-2-isopropylbenzene(cas: 7073-94-1SDS of cas: 7073-94-1)

1-Bromo-2-isopropylbenzene(cas: 7073-94-1) 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. SDS of cas: 7073-94-1 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

In 2019,Organic Letters included an article by Munoz, Socrates B.; Dang, Huong; Ispizua-Rodriguez, Xanath; Mathew, Thomas; Prakash, G. K. Surya. Formula: C7H5BrO2. The article was titled 《Direct Access to Acyl Fluorides from Carboxylic Acids Using a Phosphine/Fluoride Deoxyfluorination Reagent System》. The information in the text is summarized as follows:

A fast and simple method for deoxyfluorination of carboxylic acids is presented. The protocol employs commodity chems. (PPh3, NBS, fluoride), affording products in excellent yields under mild conditions. Acyloxyphosphonium ion, the key reaction intermediate, was identified by NMR spectroscopic methods. Bronsted acidic conditions are essential for efficient C-F bond formation. The protocol displays scalability, high functional group tolerance, chemoselectivity, and easy purification of products. Deoxyfluorination of active pharmaceutical ingredients was established. In the experimental materials used by the author, we found 4-Bromobenzoic acid(cas: 586-76-5Formula: C7H5BrO2)

4-Bromobenzoic acid(cas: 586-76-5) has been 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 It was used to study the metabolic fate of 2-,3-and 4-bromo benzoic acids in rat hepatocytes incubation using high temperature liquid chromatography.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2016,Gildner, Peter G.; DeAngelis, Andrew; Colacot, Thomas J. published 《Palladium-Catalyzed N-Arylation of Cyclopropylamines》.Organic Letters published the findings.Computed Properties of C9H11Br The information in the text is summarized as follows:

A general method has been developed for the previously challenging arylation of cyclopropylamine and N-arylcyclopropylamines. Highly active, air-stable, and com. available R-allylpalladium precatalysts provide access to a wide range of (hetero)arylated cyclopropylanilines in high yields. Precatalysts [(tBuBrettPhos)Pd(allyl)]OTf and [(BrettPhos)Pd(crotyl)]OTf deliver monoarylated products, while (PtBu3)Pd(crotyl)Cl is suited for preparing unsym. diarylated products. The developed conditions tolerate a range of functional groups and heterocycles, allowing access to an array of arylated cyclopropylamines, a motif present in prominent drug mols.1-Bromo-2-isopropylbenzene(cas: 7073-94-1Computed Properties of C9H11Br) was used in this study.

1-Bromo-2-isopropylbenzene(cas: 7073-94-1) 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 C9H11Br

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Sawazaki, Taka; Shimizu, Yusuke; Oisaki, Kounosuke; Sohma, Youhei; Kanai, Motomu published their research in Organic Letters on December 21 ,2018. The article was titled 《Convergent and Functional-Group-Tolerant Synthesis of B-Organo BODIPYs》.Recommanded Product: potassium (3-bromophenyl)trifluoroborate The article contains the following contents:

Boron-dipyrromethenes (BODIPYs) are one of the most important fluorescent materials. Despite their potential unique properties, however, B,B-fluoro-organo BODIPYs (BFR-BODIPYs) possessing an organo group (R) on the boron center have not been studied in detail, due in part to challenges related to their synthesis. In this paper, a convergent synthesis of BFR-BODIPYs operative under mild conditions is reported. Conversions of the thus-synthesized functionalized BFR-BODIPYs by cross-coupling, condensation, and SN2 reactions at the R group are also demonstrated.potassium (3-bromophenyl)trifluoroborate(cas: 374564-34-8Recommanded Product: potassium (3-bromophenyl)trifluoroborate) was used in this study.

potassium (3-bromophenyl)trifluoroborate(cas: 374564-34-8) 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. Recommanded Product: potassium (3-bromophenyl)trifluoroborate Due to the reactivity of bromide, they are used as potential precursors or important intermediates in organic synthesis.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary