Author: Jessica.F

Lowy, Dan A. published the artcileA new high-efficiency reagent for the potentiometry of cationic surfactants, Related Products of bromides-buliding-blocks, the publication is Process Control and Quality (1993), 4(2), 125-37, database is CAplus.

A new heteropolyanionic reagent has been used for the accurate determination of quaternary ammonium salts (QAS) in various matrixes containing strongly interfering species. The octapotassium 1-cobalto(II)[1-aqua]-1-molybdo-16-tungsto-2-phosphate (HPA) is a successful titrant of several alkyltrimethylammonium salts (with an alkyl chain of C_12-18), both in the potentiometric and the two-phase titration procedure. In order to prove the high efficiency of the proposed reagent, comparative titrations have been carried out for hexadecyltrimethylammonium bromide with HPA, sodium tetraphenylborate (TFB) and sodium dodecylsulfate (DDS). The dimidium bromide and disulfine VN 150 indicator mixture has been utilized in two-phase titrations, while the endpoint of the potentiometric titrations was detected by means of a QAS-selective liquid-membrane electrode. The relative error of the average of eight titrations by means of the three reagents decreased in the order TFB > DDS > HPA, corresponding to the increase of the association equilibrium constant: [(CH₃)₃RN]₈HPA·19H₂O > [(CH₃)₃RN]DDS > [(CH₃)₃RN]TFB.

Process Control and Quality published new progress about 518-67-2. 518-67-2 belongs to bromides-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Benzene, name is Dimidium bromide, and the molecular formula is C20H18BrN3, Related Products of bromides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Doebelin, Christelle published the artcileIdentification of potent RORβ modulators: Scaffold variation, Name: (3-Bromo-5-isopropoxyphenyl)boronic acid, the publication is Bioorganic & Medicinal Chemistry Letters (2018), 28(19), 3210-3215, database is CAplus and MEDLINE.

The authors sought to develop RORβ-selective probe mols. to investigate the function of the receptor in vitro and in vivo and its role in the pathophysiol. of disease. To accomplish this, the authors modified a potent dual RORβ/RORγ inverse agonist from the primary literature with the goal of improving selectivity for RORβ vs. RORγ. Truncation of the Western portion of the mol. ablated activity at RORγ and led to a potent series of RORβ modulators. Continued exploration of this series investigated alternate replacement cores for the aminothiazole ring. Numerous suitable replacements were found during the course of the authors’ SAR investigations and are reported herein.

Bioorganic & Medicinal Chemistry Letters published new progress about 871125-81-4. 871125-81-4 belongs to bromides-buliding-blocks, auxiliary class Bromide,Boronic acid and ester,Benzene,Ether,Boronic Acids,Boronic acid and ester, name is (3-Bromo-5-isopropoxyphenyl)boronic acid, and the molecular formula is C9H12BBrO3, Name: (3-Bromo-5-isopropoxyphenyl)boronic acid.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Kelkar, Ashutosh A. published the artcileCopper-catalyzed amination of aryl halides: single-step synthesis of triarylamines, Formula: C30H24BrCuN2P, the publication is Tetrahedron Letters (2002), 43(40), 7143-7146, database is CAplus.

A simple and efficient methodol. for the synthesis of triarylamines in a single step has been demonstrated using a ligand-free CuI catalyst and potassium tert.-butoxide as the base. Use of chelating ligands leads to the formation of triarylamine derivatives selectively (95% yield) with high catalytic activity.

Tetrahedron Letters published new progress about 25753-84-8. 25753-84-8 belongs to bromides-buliding-blocks, auxiliary class Copper, name is Bromo(1,10-phenanthroline)(triphenylphosphine)copper(I), and the molecular formula is C30H24BrCuN2P, Formula: C30H24BrCuN2P.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Zhu, Shaojuan published the artcileIn vitro and in vivo evaluation of antioxidant activity of ARIs: benzothiadiazine and pyridothiadiazine derivatives, Application of 4-Bromo-1-(bromomethyl)-2-fluorobenzene, the publication is Journal of Chemical and Pharmaceutical Research (2014), 6(5), 173-179, 7 pp., database is CAplus.

Increased oxidant stress plays an important role in the chronic complications of diabetes. This study aimed to examine if our previously synthesized aldose reductase inhibitors (ARIs), benzothiadiazine 1,1-dioxide derivatives and the structural analogs pyrido[2,3-e]-[1,2,4]-thiadiazine 1,1-dioxide derivatives, have the potent as antioxidants. Several assays have been used to estimate antioxidant capacities including DPPH, MDA and sorbitol assays. Effect of concentration, PH and sunlight on DPPH scavenging activity were determined, and results showed benzothiadiazine 1,1-dioxide derivatives (compound 7a, 7b, 7c) at both concentration of 10-5 M and 10-4 M had notable scavenging activity against DPPH, significantly higher than that of pyrido[2,3-e]-[1,2,4]-thiadiazine 1,1-dioxide derivatives(compound 7’a, 7’b, 7’c). The PH demonstrated no effect on the activity and sunlight was essential for the activity. The brain MDA levels (MDA, an index of lipid peroxidation) for compounds 7a, 7b, 7c significantly decreased comparing with the neg. control, the brain homogenate sample induced by oxidant system Fe(III) ascorbic acid. Oral administration of compound 7’a, 7’b and 7’c to groups of STZ-induced rats for 5 days decreased the level of sciatic nerve sorbitol, The inhibition of sorbitol level in the range of 24%-35% for 7’a, 7’b and 7’c, showing some difference with the in vitro study.

Journal of Chemical and Pharmaceutical Research published new progress about 76283-09-5. 76283-09-5 belongs to bromides-buliding-blocks, auxiliary class Fluoride,Bromide,Benzyl bromide,Benzene, name is 4-Bromo-1-(bromomethyl)-2-fluorobenzene, and the molecular formula is C18H20N2O12, Application of 4-Bromo-1-(bromomethyl)-2-fluorobenzene.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Forero-Doria, Oscar published the artcileNovel N-benzoylimidazolium ionic liquids derived from benzoic and hydroxybenzoic acids as therapeutic alternative against Biofilm-forming bacteria in skin and soft-tissue infections, Computed Properties of 111-83-1, the publication is Bioorganic Chemistry (2022), 105914, database is CAplus and MEDLINE.

The skin and soft tissue infections (SSTIs) -producing pathogens have acquired resistance to a wide range of antimicrobials, thus it is highly relevant to have new treatment alternatives. In this study, we report the synthesis, characterization, and antibacterial activity of three novel series of ionic liquids (ILs) derived from benzoic and hydroxybenzoic acids, with different lengths of the alkyl chain. The min. inhibitory concentration (MIC) were tested in Gram-pos.: Pseudomonas aeruginosa, Staphylococcus aureus, Staphylococcus epidermidis, and Streptococcus pyogenes, and Gram-neg.: Acinetobacter baumannii and Escherichia coli, showing a MIC range of 0.01562-2.0 mM, with the activity varying according to the aromatic ring functionalization and the length of the alkyl chains. Regarding the antibiofilm activity, different efficacy was observed among the different ILs, some of them presenting antibiofilm activities close to 80% as in the case of those derived from syringic acid with an alkyl chain of six carbon atoms against Pseudomonas aeruginosa. Furthermore, the cell viability in HaCaT cells was determined, showing a half maximal effective concentration (EC₅₀) values higher than the MIC values. The antimicrobial and antibiofilm results, along with not producing cellular toxicity at the MIC values shows that these ILs could be a promising alternative against SSTIs.

Bioorganic Chemistry published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C8H17Br, Computed Properties of 111-83-1.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Prinz, Michaela published the artcile1,4-Substituted 4-(1H)-pyridylene-hydrazone-type inhibitors of AChE, BuChE, and amyloid-β aggregation crossing the blood-brain barrier, Product Details of C7H5Br2F, the publication is European Journal of Pharmaceutical Sciences (2013), 49(4), 603-613, database is CAplus and MEDLINE.

Given the fundamentally multifactorial character of Alzheimer’s disease (AD), addressing more than one target for disease modification or therapy is expected to be highly advantageous. Here, following the cholinergic hypothesis, we aimed to inhibit both acetyl- and butyrylcholinesterase (AChE and BuChE) in order to increase the concentration of acetylcholine in the synaptic cleft. In addition, the formation of the amyloid β fibrils should be inhibited and already preformed fibrils should be destroyed. Based on a recently identified AChE inhibitor with a 1,4-substituted 4-(1H)-pyridylene-hydrazone skeleton, a substance library has been generated and tested for inhibition of AChE, BuChE, and fibril formation. Blood-brain barrier mobility was ensured by a transwell assay. Whereas the p-nitrosubstituted compound 18C shows an anti-AChE activity in the nanomolar range of concentration (IC₅₀ = 90 nM), the bisnaphthyl substituted compound 20L was found to be the best overall inhibitor of AChE/BuChE and enhances the fibril destruction.

European Journal of Pharmaceutical Sciences published new progress about 76283-09-5. 76283-09-5 belongs to bromides-buliding-blocks, auxiliary class Fluoride,Bromide,Benzyl bromide,Benzene, name is 4-Bromo-1-(bromomethyl)-2-fluorobenzene, and the molecular formula is C7H5Br2F, Product Details of C7H5Br2F.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Kim, Ji-Hoon published the artcileHigh open-circuit voltage organic photovoltaic cells fabricated using semiconducting copolymers consisting of bithiophene and fluorinated quinoxaline or triazole derivatives, Quality Control of 303734-52-3, the publication is Synthetic Metals (2014), 88-96, database is CAplus.

Two new alternating copolymers consisting of bithiophene and fluorinated quinoxaline or fluorinated benzotriazole derivatives, namely, poly[{4,4′-bis(2-ethylhexyl)-2,2′-bithiophene-5,5′-diyl}-alt-{6,7-difluoro-5,5-(5,8-di-2-thienyl-2,3-bis(4-octyloxyl)phenyl) quinoxaline}] (PBT-DFDTQX) and poly[{4,4′-bis(2-ethylhexyl)-2,2′-bithiophene-5,5′-diyl}-alt-{4,7-bis(5-thiophen-2-yl)-5,6-difluoro-2-(heptadecan-9-yl)-2H-benzo[d][1,2,3]triazole}] (PBT-DFDTBTz), were synthesized by the Stille cross coupling reaction for application in organic photovoltaic cells. The optical band gaps of PBT-DFDTQX and PBT-DFDTBTz are 1.77 and 1.90 eV, resp. The synthesized polymers showed relatively deep HOMO energy levels (-5.52 eV for PBT-DFDTQX and -5.54 eV for PBT-DFDTBTz) owing to the strong electron accepting nature of F. The polymers were used to fabricate bulk heterojunction photovoltaic devices with [6,6]-Ph C₇₁-butylic acid Me ester (PC₇₁BM) as the electron acceptor. Devices fabricated using PBT-DFDTQX and PBT-DFDTBTz showed the maximum power conversion efficiency (PCE) of 4.01 and 4.22%, resp., with a high open-circuit voltage of over 0.95 V under AM 1.5 G (100 mW/cm²) conditions.

Synthetic Metals published new progress about 303734-52-3. 303734-52-3 belongs to bromides-buliding-blocks, auxiliary class Thiophene,Bromide, name is 2-Bromo-3-(2-ethylhexyl)thiophene, and the molecular formula is C12H19BrS, Quality Control of 303734-52-3.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Chun, Yong-Jin published the artcileSynthesis of ω-phthalimidoalkylphosphonates, Application of Diethyl (bromomethyl)phosphonate, the publication is Synthesis (1994), 909-10, database is CAplus.

Di-Et phthalimidoalkylphosphonates I (n = 1,2,3,4) were synthesized by the reaction of di-Et bromoalkylphosphonates with N-(tert-butyldimethylsilyl)phthalimide in the presence of tetrabutylammonium fluoride.

Synthesis published new progress about 66197-72-6. 66197-72-6 belongs to bromides-buliding-blocks, auxiliary class Aliphatic Chain, name is Diethyl (bromomethyl)phosphonate, and the molecular formula is C5H12BrO3P, Application of Diethyl (bromomethyl)phosphonate.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Marenets, M. S. published the artcile4-Trifluoromethylthiostyrene, HPLC of Formula: 21101-63-3, the publication is Ukrainskii Khimicheskii Zhurnal (Russian Edition) (1968), 34(9), 938-40, database is CAplus.

Addition of Br to refluxing p-F3CSC6H4Me illuminated with a 300-w. lamp formed p-F3CSC6H4CH2Br (I), m. 52-2.5° (aqueous MeOH). I and hexa-methylenetetramine in 50% HOAc refluxed 2 hrs., then refluxed 15 min. with aqueous HCl formed p-F3CSC6H4CHO (II), m. 26-7°, also prepared from p-F3CC6H4CONHPh via reaction with PCl5 in PhMe and reduction in an Et2O solution of SnCl2 saturated with HCl. II and MeMgI formed p-F3CSC6H4CHMeOH (III), b18 124°, d20 1.2854, n20D 1.4938. p-F3CSC6H4CH:CHCO2H (IV), m. 199-200°, was prepared from II and CH2(CO2H)2 in pyridine containing a little piperidine. p-F3CSC6H4CH:CH2, b18 93° [dibromide m. 34-5° (EtOH)], was obtained from III and IV by dehydration and decarboxylation, resp.

Ukrainskii Khimicheskii Zhurnal (Russian Edition) published new progress about 21101-63-3. 21101-63-3 belongs to bromides-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Bromide,sulfides,Benzyl bromide,Benzene, name is (4-(Bromomethyl)phenyl)(trifluoromethyl)sulfane, and the molecular formula is C8H6BrF3S, HPLC of Formula: 21101-63-3.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary

Zhao, Zhen-Zhen published the artcileNickel-Catalyzed Reductive C(sp²)-Si Coupling of Chlorohydrosilanes via Si-Cl Cleavage, Application In Synthesis of 111-83-1, the publication is Angewandte Chemie, International Edition (2022), 61(21), e202200215, database is CAplus and MEDLINE.

Authors report here a new method for the synthesis of organohydrosilanes from phenols and ketones. This method is established through reductive C-Si coupling of chlorohydrosilanes via unconventional Si-Cl cleavage. The reaction offers access to aryl- and alkenylhydrosilanes with a scope that is complementary to those of the established methods. Electron-rich, electron-poor, and ortho-/meta-/para-substituted (hetero)aryl electrophiles, as well as cyclic and acyclic alkenyl electrophiles, were coupled successfully. Functionalities, including Grignard-sensitive groups (e.g., primary amine, amide, phenol, ketone, ester, and free indole), acid-sensitive groups (e.g., ketal and THP protection), alkyl-Cl, pyridine, furan, thiophene, Ar-Bpin, and Ar-SiMe₃, were tolerated. Gram-scale(coating) reaction, incorporation of -Si(H)R₂ into complex biol. active mols., and derivatization of formed organohydrosilanes are demonstrated.

Angewandte Chemie, International Edition published new progress about 111-83-1. 111-83-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromooctane, and the molecular formula is C5H13Cl2N, Application In Synthesis of 111-83-1.

Referemce:
https://en.wikipedia.org/wiki/Bromide,
bromide – Wiktionary