Month: November 2022

Synthetic Route of C7H5BrO2In 2019 ,《Catalyst-Free Approach for Hydroboration of Carboxylic Acids under Mild Conditions》 appeared in ACS Omega. The author of the article were Xu, Xiaojuan; Yan, Dandan; Zhu, Zhangye; Kang, Zihan; Yao, Yingming; Shen, Qi; Xue, Mingqiang. The article conveys some information:

Aryl and alkyl carboxylic acids underwent hydroboration with pinacolborane under solvent-free conditions or in THF to yield primary alkyl pinacolborate esters. Seven of the borate esters were hydrolyzed to the corresponding primary alcs. in 90-93% yields with silica in MeOH. Benzoic acid was reduced under solvent-free conditions to yield benzyl pinacol borate in 98% yield on 15 mmol scale. After reading the article, we found that the author used 4-Bromobenzoic acid(cas: 586-76-5Synthetic Route of 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.Synthetic Route of C7H5BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Related Products of 2969-81-5In 2019 ,《Functional Biointerfaces Based on Mixed Zwitterionic Self-Assembled Monolayers for Biosensing Applications》 was published in Langmuir. The article was written by Wang, Yu-Sin; Yau, Shuehlin; Chau, Lai-Kwan; Mohamed, Ameen; Huang, Chun-Jen. The article contains the following contents:

Surface modification for biosensors has focused attention for improvement of their sensitivity and specificity, particularly for the detection in complex medium. In this work, we have synthesized zwitterionic carboxybetaine-thiols (CB-thiols) and sulfobetaine-thiols (SB-thiols) for modification of gold substrates to form a functional self-assembled monolayer (SAM) for the immunoassay in a surface plasmon resonance (SPR) biosensor. XPS, contact angle goniometer, and cyclic voltammetry were applied for characterizations of elemental composition, surface wettability, and packing d., resp. The antifouling properties of the SAMs were accessed by quant. anal. of protein and bacterial adsorption. The results from the SAMs with a single component indicated that the SB-thiol SAM provides better surface hydrophilicity, fouling resistance, and packing d. as compared to the CB-thiol SAM, likely due to the ionic association of CB moieties. However, the CB-thiol with the functional carboxylate group plays a critical role in postmodification of biomols. via com. available amine coupling chem. Thus, the mixed SAMs were prepared to integrate the unique characteristics from CB- and SB-thiols to control compositions and surface properties. The immunoassay was performed in the SPR biosensor, showing that the zwitterionic mixed SAM enables immobilization of biorecognition elements (BREs), and improved sensitivity and specificity. Consequently, the work reveals excellent and attractive versatility, antifouling, and functionalizable properties of zwitterionic mixed SAMs comprising CB- and SB-thiols for biosensing applications. This surface chem. is expected to be applicable to monitor specific mol. recognition events. After reading the article, we found that the author used Ethyl 4-bromobutyrate(cas: 2969-81-5Related Products of 2969-81-5)

Ethyl 4-bromobutyrate(cas: 2969-81-5) 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 2969-81-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Category: bromides-buliding-blocksIn 2019 ,《Small antibacterial molecules highly active against drug-resistant Staphylococcus aureus》 was published in MedChemComm. The article was written by Dey, Rajib; De, Kathakali; Mukherjee, Riya; Ghosh, Sreyan; Haldar, Jayanta. The article contains the following contents:

The rapid growth of antibiotic resistance in Staphylococcus aureus coupled with their biofilm forming ability has made the infections difficult to treat with conventional antibiotics. This has created a massive threat towards public health and is a huge concern worldwide. Aiming to address this challenging issue, herein we report a new class of small antibacterial mols. (SAMs) with high antibacterial activity against multidrug-resistant S. aureus. The design principle of the mols. was based on the variation of hydrophobic/hydrophilic balance through incorporation of two quaternary ammonium groups, ethanol moieties, non-peptidic amide bonds and aliphatic chains. The lead compound, identified through a comprehensive anal. of structure-activity relationships, displayed high activity against clin. isolates of methicillin-resistant S. aureus (MRSA) and vancomycin-resistant S. aureus (VRSA) with MIC values in the range of 1-4μg mL-1. More importantly, this compound was capable of killing stationary phase bacteria and disrupting established biofilms of MRSA. Addnl., the compound revealed min. toxicity towards human erythrocytes (HC50 = 577μg mL-1) and did not show significant toxicity towards mammalian cells (MDCK and A549) up to 128 g mL-1. Remarkably, the incorporation of non-peptidic amide bonds made the compounds less susceptible to degradation in human plasma, serum and mouse liver homogenate. Taken together, the results therefore indicate great promise for this class of mols. to be developed as potent antibacterial agents in treating infections caused by drug-resistant S. aureus. In the experiment, the researchers used many compounds, for example, 1,6-Dibromohexane(cas: 629-03-8Category: bromides-buliding-blocks)

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.Category: bromides-buliding-blocks

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

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

《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

Product Details of 401-55-8On September 24, 2021 ,《The serendipitous effect of KF in Ritter reaction: Photo-induced amino-alkylation of alkenes》 was published in iScience. The article was written by Guan, Yu-Qing; Min, Xiang-Ting; He, Gu-Cheng; Ji, Ding-Wei; Guo, Shi-Yu; Hu, Yan-Cheng; Chen, Qing-An. The article contains the following contents:

The Ritter reaction has been recognized as an elegant strategy to construct the C-N bond. Its key feature is forming the carbocation for nucleophilic attack by nitriles. Herein, authors report a complementary visible-light-induced three-component Ritter reaction of alkenes, nitriles, and α-bromo nitriles/esters, thereby providing mild and rapid access to various γ-amino nitriles/acids. Mechanistic studies indicated that traceless fluoride relay, transforming KF into imidoyl fluoride intermediate, is critical for the efficient reaction switch from atom transfer radical addition (ATRA) to the Ritter reaction. This approach to amino-alkylation of alkenes is chemoselective and operationally simple. In addition to this study using Ethylbromofluoroacetate, there are many other studies that have used Ethylbromofluoroacetate(cas: 401-55-8Product Details of 401-55-8) was used in this study.

Ethylbromofluoroacetate(cas: 401-55-8) is a member of organofluorine compounds. Organofluorine compounds, which have carbon-fluorine bonds, show unique features such as high thermal and chemical stability, high surface activity, no light-absorbing ability, high pharmacological effect, and so on. Owing to their specific characters, they are indispensable chemicals for industry and our daily lives.Product Details of 401-55-8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Molecules included an article by Qin, Shu-Qin; Li, Lian-Chun; Song, Jing-Ru; Li, Hai-Yun; Li, Dian-Peng. Recommanded Product: 2969-81-5. The article was titled 《Structurally simple phenanthridine analogues based on nitidine and their antitumor activities》. The information in the text is summarized as follows:

A series of novel structurally simple analogs based on nitidine was designed and synthesized in search of potent anticancer agents. The antitumor activity against human cancer cell lines (HepG2, A549, NCI-H460, and CNE1) was performed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay in vitro. The results showed that some of them had good anticancer activities, especially derivatives with a [(dimethylamino)ethyl]amino side chain in the C-6 position. Planar conjugated compounds 15a, 15b, and 15c, with IC50 values of 1.20 μM, 1.87 μM, and 1.19 μM against CNE1 cells, resp., were more active than nitidine chloride. Compound 15b and compound 15c with IC50 values of 1.19 μM and 1.37 μM against HepG2 cells and A549 cells demonstrated superior activities to nitidine. Besides, compound 5e which had a phenanthridinone core displayed extraordinary cytotoxicity against all test cells, particularly against CNE1 cells with the IC50 value of 1.13 μM.Ethyl 4-bromobutyrate(cas: 2969-81-5Recommanded Product: 2969-81-5) was used in this study.

Ethyl 4-bromobutyrate(cas: 2969-81-5) 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.Recommanded Product: 2969-81-5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,ACS Catalysis included an article by Zhu, Kai; Xu, Kai; Fang, Qi; Wang, Yi; Tang, Bencan; Zhang, Fengzhi. SDS of cas: 2623-87-2. The article was titled 《Enantioselective Synthesis of Axially Chiral Biaryls via Cu-Catalyzed Acyloxylation of Cyclic Diaryliodonium Salts》. The information in the text is summarized as follows:

We report here a Cu-catalyzed enantioselective acyloxylation of cyclic diaryliodonium salts. With readily available cyclic diaryliodonium salts and ubiquitous aliphatic or (hetero)aromatic carboxylic acids as the starting materials, various axially chiral acyloxylated 2-iodobiaryls were prepared in excellent yield and with excellent enantioselectivity (mostly 99% yield and 99% ee). D. functional theory calculations were conducted to reveal the stereo- and regioselectivities. This simple reaction protocol can be employed for the late-stage modification of some drug mols. Finally, by diversity-oriented transformations, these acyloxylated 2-iodobiaryl products can be easily transformed into diverse valuable functionalized biaryls that could be used as chiral ligands or functional materials.4-Bromobutanoic acid(cas: 2623-87-2SDS of cas: 2623-87-2) was used in this study.

4-Bromobutanoic acid(cas: 2623-87-2) belongs to carboxylic acids. The chief chemical characteristic of the carboxylic acids is their acidity. They are generally more acidic than other organic compounds containing hydroxyl groups but are generally weaker than the familiar mineral acids (e.g., hydrochloric acid, HCl, sulfuric acid, H2SO4, etc.).SDS of cas: 2623-87-2

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