Month: November 2022

Related Products of 14516-54-2In 2020 ,《Manganese-Catalyzed Enantioselective Hydrogenation of Simple Ketones Using an Imidazole-Based Chiral PNN Tridentate Ligand》 was published in Synlett. The article was written by Ling, Fei; Chen, Jiachen; Nian, Sanfei; Hou, Huacui; Yi, Xiao; Wu, Feifei; Xu, Min; Zhong, Weihui. The article contains the following contents:

A series of Mn(I) catalysts containing imidazole-based chiral PNN tridentate ligands I (R = diphenylphosphanyl, bis(3,5-dimethylphenyl)phosphanyl, bis(propan-2-yl)phosphanyl; R1 = 1-benzyl-1H-imidazol-2-yl, 1-benzyl-1H-1,3-benzodiazol-2-yl, 1-(propan-2-yl)-1H-1,3-benzodiazol-2-yl, etc.) with controllable ‘side arm’ groups have been established, enabling the inexpensive base-promoted asym. hydrogenation of simple ketones R2C(O)R3 (R2 = naphthalen-2-yl, 9H-fluoren-1-yl, benzofuran-2-yl, etc.; R3 = Me, cyclohexyl, propan-2-yl, etc.) and 1,2,3,4-tetrahydronaphthalen-1-one with outstanding activities (up to 8200 TON) and good enantioselectivities (up to 88.5% ee). This protocol features wide substrate scope and functional group tolerance, thereby providing easy access to a key intermediate of crizotinib. The experimental part of the paper was very detailed, including the reaction process of Bromopentacarbonylmanganese(I)(cas: 14516-54-2Related Products of 14516-54-2)

Bromopentacarbonylmanganese(I)(cas: 14516-54-2) has many other uses. It is used in the formation of (eta6-arene)tricarbonylmanganese(I) by reacting with arene (arene= hexamethyl benzene, 1,2,4,5-tetramethyl benzene, mesitylene, p-xylene and toluene) in the presence silver salt.Related Products of 14516-54-2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《New zwitterionic polyurethanes containing pendant carboxyl-pyridinium with shape memory, shape reconfiguration, and self-healing properties》 was written by Xiao, Xuan; Chen, Heng; Chen, Shaojun. Computed Properties of C4H7BrO2This research focused onzwitterionic polyurethane shape memory self healing property. The article conveys some information:

In this paper, novel zwitterionic polyurethane containing pendant carboxyl-pyridinium were successfully prepared with N,N-bis(2-hydroxyethyl) isonicotinamide (BINA) and hexamethylene diisocyanate (HDI), followed by zwitterionization with 4-bromobutyric acid. The structure, morphol. and properties, including shape memory, shape reconfiguration and self-healing properties, were carefully investigated. The obtained results showed that introduction of zwitterionic units reduced glass transition temperature The shape recovery increased with increasing carboxyl zwitterion content. Finally, good shape memory properties with 99% shape memory and 99% shape recovery was achieved. Addnl., the carboxyl-pyridinium zwitterionic polyurethane had good shape reconfiguration properties, and new permanent shapes could be reconfigured easily upon heating. Moreover, the carboxyl-pyridinium zwitterionic polyurethanes possessed moisture-induced self-healing properties, where its complex structure was self-repaired in a humidity-rich environment after inevitable damage. This study opens a new door to intelligent zwitterionic polymers, which is highly significance in the field of smart biomedical. In the experiment, the researchers used 4-Bromobutanoic acid(cas: 2623-87-2Computed Properties of C4H7BrO2)

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.).Computed Properties of C4H7BrO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Remote control of mechanical forces via mitochondrial-targeted magnetic nanospinners for efficient cancer treatment》 was written by Chen, Mengwei; Wu, Jiaojiao; Ning, Peng; Wang, Jingjing; Ma, Zuan; Huang, Liqun; Plaza, Gustavo R.; Shen, Yajing; Xu, Chang; Han, Yu; Lesniak, Maciej S.; Liu, Zhongmin; Cheng, Yu. Related Products of 2623-87-2 And the article was included in Small in 2020. The article conveys some information:

In cells, mech. forces play a key role in impacting cell behaviors, including adhesion, differentiation, migration, and death. Herein, a 20 nm mitochondria-targeted zinc-doped iron oxide nanocube is designed as a nanospinner to exert mech. forces under a rotating magnetic field (RMF) at 15 Hz and 40 mT to fight against cancer. The nanospinners can efficiently target the mitochondria of cancer cells. By means of the RMF, the nanocubes assemble in alignment with the external field and produce a localized mech. force to impair the cancer cells. Both in vitro and in vivo studies show that the nanospinners can damage the cancer cells and reduce the brain tumor growth rate after the application of the RMF. This nanoplatform provides an effective magnetomech. approach to treat deep-seated tumors in a spatiotemporal fashion. The experimental process involved the reaction of 4-Bromobutanoic acid(cas: 2623-87-2Related Products of 2623-87-2)

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.).Related Products of 2623-87-2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Dow, Nathan W.; Cabre, Albert; MacMillan, David W. C. published their research in Chem in 2021. The article was titled 《A general N-alkylation platform via copper metallaphotoredox and silyl radical activation of alkyl halides》.COA of Formula: C4H7Br The article contains the following contents:

The catalytic union of amides, sulfonamides, anilines, imines, or N-heterocycles with a broad spectrum of electronically and sterically diverse alkyl bromides has been achieved via a visible-light-induced metallaphotoredox platform. The use of a halogen abstraction-radical capture (HARC) mechanism allows for room temperature coupling of C(sp3)-bromides using simple Cu(II) salts, effectively bypassing the prohibitively high barriers typically associated with thermally induced SN2 or SN1 N-alkylation. This regio- and chemoselective protocol is compatible with >10 classes of medicinally relevant N-nucleophiles, including established pharmaceutical agents, in addition to structurally diverse primary, secondary, and tertiary alkyl bromides. Furthermore, the capacity of HARC methodologies to engage conventionally inert coupling partners is highlighted via the union of N-nucleophiles with cyclopropyl bromides and unactivated alkyl chlorides, substrates that are incompatible with nucleophilic substitution pathways. Preliminary mechanistic experiments validate the dual catalytic, open-shell nature of this platform, which enables reactivity previously unattainable in traditional halide-based N-alkylation systems. The experimental process involved the reaction of (Bromomethyl)cyclopropane(cas: 7051-34-5COA of Formula: C4H7Br)

(Bromomethyl)cyclopropane(cas: 7051-34-5) is used as a synthetic building block for the introduction of the cyclopropylmethyl group. It was also used in the synthesis of 1,4-dienes via iron-catalyzed cross-coupling with alkenyl Grignard reagents.COA of Formula: C4H7Br

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2022,Tang, Qi; Liu, Jing; Wang, Cheng-Bin; An, Lu; Zhang, Hai-Lin; Wang, Yi; Ren, Bing; Yang, Shi-Ping; Liu, Jin-Gang published an article in Nanoscale. The title of the article was 《A multifunctional nanoplatform delivering carbon monoxide and a cysteine protease inhibitor to mitochondria under NIR light shows enhanced synergistic anticancer efficacy》.Electric Literature of C5BrMnO5 The author mentioned the following in the article:

Photoactivated chemotherapy has attracted widespread attention due to its ability to circumvent the shortcomings of hypoxia in tumor tissues compared with traditional photodynamic therapy. In this work, novel multifunctional nanoplatform (1), Ru-inhibitor@TPPMnCO@N-GQDs, was designed and prepared, which was capable of mitochondria-targeted co-delivery of the cysteine protease inhibitor and carbon monoxide (CO) stimulated with an 808 nm near IR (NIR) laser. Nanoplatform (1) was prepared by covalent attachment of a mitochondria-targeted CO donor (TPPMnCO) and a Ru(II)-caged cysteine protease inhibitor (Ru-inhibitor) on the surface of fluorescent N-doped graphene quantum dots (N-GQDs). Nanoplatform (1) preferentially accumulated in the mitochondria of cancer cells and instantly delivered CO and the cysteine protease inhibitor upon 808 nm NIR light irradiation, thus damaging mitochondria and leading to significant in vitro and in vivo anticancer efficacy. In addition, nanoplatform (1) has good biocompatibility and did not exert any toxic side effects on mice during the period of treatment. The targeted subcellular mitochondrial co-delivery of CO and the cysteine protease inhibitor may provide new insights into CO and enzyme inhibitor combined therapies for cancer treatment. The experimental part of the paper was very detailed, including the reaction process of Bromopentacarbonylmanganese(I)(cas: 14516-54-2Electric Literature of C5BrMnO5)

Bromopentacarbonylmanganese(I)(cas: 14516-54-2) has many other uses. It is used in the formation of (eta6-arene)tricarbonylmanganese(I) by reacting with arene (arene= hexamethyl benzene, 1,2,4,5-tetramethyl benzene, mesitylene, p-xylene and toluene) in the presence silver salt.Electric Literature of C5BrMnO5

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Quality Control of 9,10-DibromoanthraceneIn 2022 ,《POSS-based fluorescence sensor for rapid analysis of β-carotene in health products》 appeared in Luminescence. The author of the article were Li, Dan; Zhou, Peipei; Hu, Yufei; Li, Gongke; Xia, Ling. The article conveys some information:

In recent years, fluorescent organic-inorganic hybrid nanomaterials have received much interest as potential fluorescent sensor materials. In this study, fluorescent organic-inorganic hybrid nanomaterials (POSS@ANT) were created using polyhedral oligomeric silsesquioxane as the precursor and 9,10-bromoanthracene as the monomer. The morphol. and composition of POSS@ANT, as well as its pore characteristics and fluorescence properties were studied. POSS@ANT displayed steady fluorescence emission at an excitation wavelength of 374 nm. Next, a β-carotene fluorescence sensor was developed using the capacity of β-carotene to quench the fluorescence of POSS@ANT. The quenching process is linked to acceptor electron transfer and energy transfer, and the sensor has a high selectivity for β-carotene. This β-carotene fluorescence anal. method that we established has a linear range of 0.2-4.3 mg/L and a detection limit of 0.081 mg/L. Finally, it was used to quantify β-carotene in health products, the recovery rate was 91.1-109.9%, the relative standard deviation (RSD) was 2.2-4.3%, and the results were comparable with the results of high-performance liquid chromatog. The approach is reliable and can be used to determine β-carotene in health products. The results came from multiple reactions, including the reaction of 9,10-Dibromoanthracene(cas: 523-27-3Quality Control of 9,10-Dibromoanthracene)

9,10-Dibromoanthracene(cas: 523-27-3) is a dibrominated polycyclic aromatic hydrocarbon (PAH). 9,10-Dibromoanthracene is often used as an energy acceptor and activator in reactions that produce chemiluminescence.Quality Control of 9,10-Dibromoanthracene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

HPLC of Formula: 6825-20-3In 2020 ,《Proton Transfer Can Govern Regioselectivity Assisted by Iron Catalysis》 appeared in iScience. The author of the article were Li, Yudong; Fu, Liyan; Jiang, Xiaolin; Zhao, Dongmei; Wang, Hui-Fang; Xia, Chungu; Li, Yuehui. The article conveys some information:

Ortho-selective aromatic C-H functionalization is frequently used in organic synthesis and chem./pharmaceutical industries. However, this reaction relies heavily on the use of directing groups suffering from limited substrate scope and extra steps to put on and remove the directing/protecting groups. Herein authors present the previously neglected concept that enables good to nearly complete selective ortho position. Proton transfer was utilized to tune the electron d. on the aryl ring and determine the positional selectivity of electrophilic substitution. Consistently with deuteration experiments and DFT studies, this work demonstrates that acid-promoted proton transfer directs accelerated ortho-selective halogenation of NH/OH contained aromatic amines/phenols with excellent selectivity (>40 examples; up to 98:2 ortho/para selectivity). The application potential of this Fe-catalyzed method is demonstrated by the convenient synthesis of three alkaloids and tizanidine. This report raises the possibility that proton transfer could serve as the basis of developing new selective C-H functionalization reactions. After reading the article, we found that the author used 3,6-Dibromo-9H-carbazole(cas: 6825-20-3HPLC of Formula: 6825-20-3)

3,6-Dibromo-9H-carbazole(cas: 6825-20-3) is used as a pharmaceutical intermediate, and also an important intermediate of synthesizing optoelectronic materials. It has been used in the preparation of N-(2-hydroxyethyl)-3,6-dibromocarbazole.HPLC of Formula: 6825-20-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《An effective synthesis of ursodeoxycholic acid from dehydroepiandrosterone》 was written by Chen, Wang; Hu, Daihua; Feng, Zili; Liu, Zhaopeng. HPLC of Formula: 1530-32-1This research focused onursodeoxycholic acid preparation Mitsunobu inversion Luche regioselective allyl oxidation; Dehydroepiandrosterone; Synthesis; Ursodeoxycholic acid. The article conveys some information:

A novel synthetic route of producing ursodeoxycholic acid (UDCA, I) was developed through multiple reactions from plant-source dehydroepiandrosterone (DHEA), with a Mitsunobu reaction and regioselective allyl oxidationat as the key steps. The reaction conditions of the key allyl oxidation reaction were also investigated and optimized, including solvent, oxidant and reaction temperature In this novel route for the preparation of UDCA, most of the reaction steps have high conversions and overall yield up to 35% for 8 steps. Since all starting materials are cost-effective, com. available and effectively avoided the risk of animal derived raw materials, this promising synthetic route offers economical and efficient strategies for potential production of UDCA. In the experimental materials used by the author, we found Ethyltriphenylphosphonium bromide(cas: 1530-32-1HPLC of Formula: 1530-32-1)

Ethyltriphenylphosphonium bromide(cas: 1530-32-1) is a phase transfer catalyst, used to accelerate the cure of phenolic-based epoxy resins, certain fluoroelastomer resins and thermosetting powder coatings. CatOnium ETPB is also used as catalysts in the synthesis of certain organic compounds.HPLC of Formula: 1530-32-1

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,ChemSusChem included an article by Cao, Qun; Stark, Roderick T.; Fallis, Ian A.; Browne, Duncan L.. HPLC of Formula: 401-55-8. The article was titled 《A Ball-Milling-Enabled Reformatsky Reaction》. The information in the text is summarized as follows:

An operationally simple one-pot one-step mechanochem. Reformatsky reaction using in situ generated organozinc intermediates under neat grinding conditions has been developed. Notable features of this reaction protocol are that it requires no solvent, no inert gases, and no pre-activation of the bulk zinc source. The developed process is demonstrated to have good substrate scope (39-82 % yield) and is effective irresp. of the initial morphol. of the zinc source. In the experiment, the researchers used Ethylbromofluoroacetate(cas: 401-55-8HPLC of Formula: 401-55-8)

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.HPLC of Formula: 401-55-8

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

In 2019,Synthesis included an article by Singh, Mala; Singh, Anoop S.; Mishra, Nidhi; Agrahari, Anand K.; Tiwari, Vinod K.. Product Details of 586-76-5. The article was titled 《Trichloroisocyanuric Acid Mediated High-Yielding Synthesis of N-Acylbenzotriazoles under Mild Reaction Conditions》. The information in the text is summarized as follows:

N-Acylbenzotriazoles I (R = C6H5, (E)-CH3(CH2)7CH=CH(CH2)7, furan-2-yl, etc.) are achieved in good yields from the corresponding carboxylic acids RC(O)OH by using only 0.35 equiv of trichloroisocyanuric acid and 1.2 equiv of PPh3. The salient features of the developed reaction path include an economic, facile, base-free, and equally useful method in milligram to gram scale. The results came from multiple reactions, including the reaction of 4-Bromobenzoic acid(cas: 586-76-5Product Details of 586-76-5)

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.Product Details of 586-76-5 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