Month: November 2022

Synthetic Route of C4H7BrIn 2020 ,《General sulfone construction via sulfur dioxide surrogate control》 was published in Green Chemistry. The article was written by Chen, Shihao; Li, Yaping; Wang, Ming; Jiang, Xuefeng. The article contains the following contents:

A highly efficient one-step synthesis of alkyl-alkyl and aryl-alkyl sulfones with a facile combination of halides, sulfur dioxide surrogates and phosphate esters is described. When thiourea dioxide was employed as a reductive sulfur dioxide surrogate, alkyl-alkyl sulfones were obtained under transition metal free conditions. Aryl-alkyl sulfones were obtained with an extremely low catalytic loading (0.2 mol%) via altering the mask of sulfur dioxide surrogates to sodium dithionite. A phosphate ester was employed as a stable and readily available alkyl source. Notably, this protocol has been applied to the late-stage modification of natural products and bioactive mols. Thus, e.g., treatment of (2-bromoethyl)benzene with thiourea dioxide and P(:O)(OMe)3 in presence of Cs2CO3, KI and TBAI afforded [2-(methylsulfonyl)ethyl]benzene (71%). In the experimental materials used by the author, we found (Bromomethyl)cyclopropane(cas: 7051-34-5Synthetic Route of 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.Synthetic Route of C4H7Br

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Application of 3395-91-3In 2020 ,《Tacrine-hydroxamate derivatives as multitarget-directed ligands for the treatment of Alzheimer’s disease: Design, synthesis, and biological evaluation》 was published in Bioorganic Chemistry. The article was written by Xu, Ana; He, Feng; Zhang, Xiangna; Li, Xiaoyang; Ran, Yingying; Wei, Chao; James Chou, C.; Zhang, Rui; Wu, Jingde. The article contains the following contents:

In order to develop multitarget-directed ligands as potential treatments for Alzheimer’s disease, twenty-eight new tacrine-hydroxamate derivatives were designed, synthesized, and biol. evaluated. As expected, most of the compounds exhibited inhibitory activities against cholinesterases (ChEs) and histone deacetylase (HDACs). Among the tested compounds, I showed not only potent and selective inhibition on AChE at sub-nanomolar potency (AChEIC50 = 0.12 nM, BChEIC50 = 361.52 nM) but also potent inhibition on HDAC (IC50 = 0.23 nM). Moreover, I exhibited inhibitory activity on Aβ1-42 self-aggregation as well as disaggregation activity on pre-formed Aβ fibrils. Furthermore, I exhibited antioxidant activity and metal chelating properties. Further mechanistic studies demonstrated that I is a pan-inhibitor of HDACs and a mixed-type inhibitor for AChE. It was shown that I is a BBB penetrant by online prediction. Taken together, the results indicate that I can serve as a lead compound to develop promising candidate analogs as AD therapeutics. In the experiment, the researchers used Methyl 3-bromopropanoate(cas: 3395-91-3Application 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.Application of 3395-91-3

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Application In Synthesis of Methyl 3-(bromomethyl)benzoateIn 2022 ,《Cobalt-Catalyzed 1,1,3-Triborylation of Terminal Alkynes》 was published in Organometallics. The article was written by Yang, Xiaoxu; Ge, Shaozhong. The article contains the following contents:

The authors have developed a Co-catalyzed regioselective 1,1,3-triborylation reaction of terminal alkynes with pinacolborane (HBpin) with a catalyst generated in situ from readily available and bench-stable Co(acac)2 and xantphos. A variety of terminal alkynes undergo this triborylation reaction, affording the corresponding 1,1,3-triborylalkanes in good yields with high selectivity. The synthetic utility of this catalytic protocol was demonstrated by developing selective stepwise functionalization of 1,1,3-triborylalkane products. The results of mechanistic studies, such as conducting control experiments and D-labeling reactions, monitoring the reaction process, and identifying reaction intermediates, suggest that this 1,1,3-triborylation reaction proceeds through 1,3-diborylation of alken-1-ylboronates formed by Co-catalyzed hydroboration of terminal alkynes. The results came from multiple reactions, including the reaction of Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8Application In Synthesis of Methyl 3-(bromomethyl)benzoate)

Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8) belongs to organobromine compounds.Most of the natural organobromine compounds are produced by marine organisms , and several brominated metabolites with antibacterial , antitumor , antiviral , and antifungal activity have been isolated from seaweed, sponges, corals, molluscs, and others. In contrast, terrestrial plants account only for a few bromine-containing compounds.Application In Synthesis of Methyl 3-(bromomethyl)benzoate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Recommanded Product: 1-Bromo-2-isopropylbenzeneIn 2016 ,《Enantiopure C1-symmetric N-heterocyclic carbene ligands from desymmetrized meso-1,2-diphenylethylenediamine: application in ruthenium-catalyzed olefin metathesis》 was published in Catalysts. The article was written by Paradiso, Veronica; Menta, Sergio; Pierini, Marco; Della Sala, Giorgio; Ciogli, Alessia; Grisi, Fabia. The article contains the following contents:

In order to design improved chiral ruthenium catalysts for asym. olefin metathesis, enantiomeric catalysts incorporating C1-sym. N-Heterocyclic carbenes (NHC) ligands with syn-related substituents on the backbone were synthesized starting from meso-1,2-diphenylethylenediamine. The absolute configuration of the enantiomers of the desymmetrized meso diamine was assigned by optical rotation anal. and in silico calculations, and was found to be maintained in their resp. ruthenium catalysts by comparison of the relative electronic CD (ECD) spectra. The catalytic behavior of the enantiomeric ruthenium complexes was investigated in model asym. metathesis transformations and compared to that of analogus complexes bearing C1-sym. NHC ligands with an anti backbone. Modest enantioselectivities were registered and different catalyst properties depending on the nature of stereochem. relationship of substituents on the backbone were observed After reading the article, we found that the author used 1-Bromo-2-isopropylbenzene(cas: 7073-94-1Recommanded Product: 1-Bromo-2-isopropylbenzene)

1-Bromo-2-isopropylbenzene(cas: 7073-94-1) belongs to organobromine compounds.Organobromine chemicals are produced naturally by an array of biological and other chemical processes in our environment. Organobromine compounds are produced naturally by marine creatures (sponges, corals, sea slugs, tunicates, sea fans) and seaweed, plants, fungi, lichen, algae, bacteria, microbes, and some mammals. Recommanded Product: 1-Bromo-2-isopropylbenzene

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《A triarylamine-based fluorescent covalent organic framework for efficient detection and removal of Mercury(II) ion》 was written by He, Yulong; Wang, Xiaomin; Wang, Kang; Wang, Limin. Formula: C18H12Br3NThis research focused ontriphenylamine covalent organic framework polymer fluorescence sensor mercury removal. The article conveys some information:

A novel covalent organic framework (COF) polymer has been designed and synthesized by Suzuki polymerization of two monomers based on triarylamine derivatives, and the polymer displays nanosphere morphol. due to mini-emulsion reaction system. On the basis of the above polymer, we further fabricated a Schiff base covalent organic framework polymer fluorescent sensor for efficient detection and removal of mercury(II) ions. The material underwent a fluorescence and color change upon the touching of mercury(II) ions. Thus, taking advantage of the material to detect the presence of mercury(II) ions is quite convenient. Furthermore, the material is capable of efficiently adsorbing mercury(II) ions from aqueous solution The fluorescence sensing device was successfully fabricated by immobilizing the polymer probe on a macroporous sponge, which was more convenient to detect and remove mercury(II) ions relative to powdery polymer probe. The results came from multiple reactions, including the reaction of Tris(4-bromophenyl)amine(cas: 4316-58-9Formula: C18H12Br3N)

In general, Tris(4-bromophenyl)amine(cas: 4316-58-9) is often used in the synthesis of porous luminescent covalent–organic polymers (COPs)Formula: C18H12Br3N

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Dual Farnesoid X Receptor/Soluble Epoxide Hydrolase Modulators Derived from Zafirlukast》 was written by Schierle, Simone; Helmstaedter, Moritz; Schmidt, Jurema; Hartmann, Markus; Horz, Maximiliane; Kaiser, Astrid; Weizel, Lilia; Heitel, Pascal; Proschak, Anna; Hernandez-Olmos, Victor; Proschak, Ewgenij; Merk, Daniel. Quality Control of Methyl 3-(bromomethyl)benzoateThis research focused onZafirlukast derivative preparation farnesoid receptor epoxide hydrolase modulator steatohepatitis; NAFLD; NASH; Polypharmacology; non-alcoholic steatohepatitis; nuclear receptor. The article conveys some information:

The nuclear farnesoid X receptor (FXR) and the enzyme soluble epoxide hydrolase (sEH) are validated mol. targets to treat metabolic disorders such as non-alc. steatohepatitis (NASH). Their simultaneous modulation in vivo has demonstrated a triad of anti-NASH effects and thus may generate synergistic efficacy. Here we report dual FXR activators/sEH inhibitors derived from the anti-asthma drug Zafirlukast. Systematic structural optimization of the scaffold has produced favorable dual potency on FXR and sEH while depleting the original cysteinyl leukotriene receptor antagonism of the lead drug. The resulting polypharmacol. activity profile holds promise in the treatment of liver-related metabolic diseases. In the experimental materials used by the author, we found Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8Quality Control of Methyl 3-(bromomethyl)benzoate)

Methyl 3-(bromomethyl)benzoate(cas: 1129-28-8) belongs to organobromine compounds.Organobromine chemicals are produced naturally by an array of biological and other chemical processes in our environment. Organobromine compounds are produced naturally by marine creatures (sponges, corals, sea slugs, tunicates, sea fans) and seaweed, plants, fungi, lichen, algae, bacteria, microbes, and some mammals. Quality Control of Methyl 3-(bromomethyl)benzoate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Synthesis of Vinylic Sulfones in Aqueous Media》 was written by Goh, Jeffrey; Maraswami, Manikantha; Loh, Teck-Peng. Application In Synthesis of Benzyl 2-bromoacetateThis research focused onvinylic sulfone green preparation regioselective; allenic carbonyl compound sulfinic acid sulfination. The article conveys some information:

A green method for the sulfination of allenic carbonyl compounds to access a wide variety of vinylic sulfones RC(O)CH2C(SO2R1)=CH2 [R = hexyl, Ph, 2-furyl, etc.; R1 = Me, cyclopropyl, Ph, etc.] was developed. This reaction worked in aqueous media under very mild conditions. This reaction was atom economic. A wide variety of vinylic sulfones could be obtained in moderate to excellent yields with wide functional group tolerance. The efficiency of this method was demonstrated in some reactions where the desired products could be isolated by filtration. After reading the article, we found that the author used Benzyl 2-bromoacetate(cas: 5437-45-6Application In Synthesis of Benzyl 2-bromoacetate)

Benzyl 2-bromoacetate(cas: 5437-45-6) has been used in the alkylation of (-)-2,3-O-isopropylidene-D-threitol that afforded lipopeptide, 2-[(4R,5R)-5-({[(9H-fluoren-9-yl)methoxy]carbonylaminomethyl}-2,2-dimethyl-1,3-dioxolan-4-yl)methoxy]acetic acid.Application In Synthesis of Benzyl 2-bromoacetate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

《Titanosilicate zeolite precursors for highly efficient oxidation reactions》 was written by Bai, Risheng; Navarro, M. Teresa; Song, Yue; Zhang, Tianjun; Zou, Yongcun; Feng, Zhaochi; Zhang, Peng; Corma, Avelino; Yu, Jihong. COA of Formula: C8H8Br2This research focused ontitanosilicate zeolite oxidation reaction. The article conveys some information:

Titanosilicate zeolites are catalysts of interest in the field of fine chems. However, the generation and accessibility of active sites in titanosilicate materials for catalyzing reactions with large mols. is still a challenge. Herein, we prepared titanosilicate zeolite precursors with open zeolitic structures, tunable pore sizes, and controllable Si/Ti ratios through a hydrothermal crystallization strategy by using quaternary ammonium templates. A series of quaternary ammonium ions are discovered as effective organic templates. The prepared amorphous titanosilicate zeolites with some zeolite framework structural order have extra-large micropores and abundant octahedrally coordinated isolated Ti species, which lead to a superior catalytic performance in the oxidative desulfurization of dibenzothiophene (DBT) and epoxidation of cyclohexene. It is anticipated that the amorphous prezeolitic titanosilicates will benefit the catalytic conversion of bulky mols. in a wide range of reaction processes.1,4-Bis(bromomethyl)benzene(cas: 623-24-5COA of Formula: C8H8Br2) was used in this study.

1,4-Bis(bromomethyl)benzene(cas: 623-24-5) 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. COA of Formula: C8H8Br2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Safety of EthylbromofluoroacetateOn May 1, 2020 ,《Photocatalytic Remote Oxyfluoroalkylation of Heteroalkynes: Regio-, Stereo-, and Site-Selective Access to Complex Fluoroalkylated (Z)-Alkenes》 appeared in Organic Letters. The author of the article were Shang, Tianbo; Zhang, Junhua; Zhang, Yan; Zhang, Fang; Li, Xin-Sheng; Zhu, Gangguo. The article conveys some information:

A visible-light-induced remote oxyfluoroalkylation, including ketofluoroalkylation and hydroxytrifluoromethylation, of heteroalkynes is developed with DMSO (DMSO) and H2O as the oxygen source, resp. It provides a facile access to complex fluoroalkylated (Z)-alkenes in satisfactory yields with excellent regio-, stereo-, and site-selectivity. The reaction involves an uncommon vinyl radical-induced intermol. C(sp3)-H functionalization, thus offering a good platform for the development of remote difunctionalization of alkynes. The results came from multiple reactions, including the reaction of Ethylbromofluoroacetate(cas: 401-55-8Safety of Ethylbromofluoroacetate)

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.Safety of Ethylbromofluoroacetate

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Electric Literature of C7H5Br2FOn September 16, 2021 ,《Structure-Activity Relationship and Mode-of-Action Studies Highlight 1-(4-Biphenylylmethyl)-1H-imidazole-Derived Small Molecules as Potent CYP121 Inhibitors》 was published in ChemMedChem. The article was written by Walter, Isabell; Adam, Sebastian; Gentilini, Maria Virginia; Kany, Andreas M.; Brengel, Christian; Thomann, Andreas; Sparwasser, Tim; Kohnke, Jesko; Hartmann, Rolf W.. The article contains the following contents:

CYP121 of Mycobacterium tuberculosis (Mtb) is an essential target for the development of novel potent drugs against tuberculosis (TB). Besides known antifungal azoles, further compounds of the azole class were recently identified as CYP121 inhibitors with antimycobacterial activity. Herein, we report the screening of a similarity-oriented library based on the former hit compound, the evaluation of affinity toward CYP121, and activity against M. bovis BCG. The results enabled a comprehensive SAR study, which was extended through the synthesis of promising compounds and led to the identification of favorable features for affinity and/or activity and hit compounds with 2.7-fold improved potency. Mode of action studies show that the hit compounds inhibit substrate conversion and highlighted CYP121 as the main antimycobacterial target of our compounds Exemplified complex crystal structures of CYP121 with three inhibitors reveal a common binding site. Engaging in both hydrophobic interactions as well as hydrogen bonding to the sixth iron ligand, our compounds block a solvent channel leading to the active site heme. Addnl., we report the first CYP inhibitors that are able to reduce the intracellular replication of M. bovis BCG in macrophages, emphasizing their potential as future drug candidates against TB. In the experimental materials used by the author, we found 4-Bromo-1-(bromomethyl)-2-fluorobenzene(cas: 76283-09-5Electric Literature of C7H5Br2F)

4-Bromo-1-(bromomethyl)-2-fluorobenzene(cas: 76283-09-5) 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. Electric Literature of C7H5Br2F

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary