Category: bromides-buliding-blocks

Kondo, Hiroki published the artcileBranch-Selective Allylic C-H Carboxylation of Terminal Alkenes by Pd/sox Catalyst, SDS of cas: 74317-85-4, the main research area is regioselective carboxylation terminal alkene carboxylic acid palladium SOX catalyst; branched allylic ester preparation.

A ligand-controlled branch-selective allylic C-H carboxylation through Pd catalysis is described. The developed catalytic system, which consists of Pd(OAc)2, sulfoxide-oxazoline (sox) as a ligand and benzoquinone as an oxidant, couples terminal alkenes and carboxylic acids to furnish the corresponding branched allylic esters with high regioselectivity.

Organic Letters published new progress about C-H bond activation. 74317-85-4 belongs to class bromides-buliding-blocks, name is 2-Bromo-4-methoxybenzoic acid, and the molecular formula is C8H7BrO3, SDS of cas: 74317-85-4.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Jeon, Soon-Ok published the artcileA blue organic emitting diode derived from new styrylamine type dopant materials, Application of 4-(Bromomethyl)-N,N-diphenylaniline, the main research area is blue organic emitting diode LED styrylamine derivative dopant.

The authors have designed and synthesized new dopant materials based on the styrylamine moiety, 4-[(1,2-diphenyl)-4′-(N,N-diphenyl-4-vinylbenzenamine)]biphenyl (4) and 4-[(1,2-diphenyl)-4′-(N,N-diphenyl-4-vinylbenzenamine)]terphenyl (8). Blue OLEDs were obtained from new styrylamine dopant materials and compared with those of blue dopant bis[4-(di-p-N,N-diphenylamino)styryl]stilbene (DSA-Ph) and diphenyl[4-(2-terphenyl vinyl)phenyl]amine (R-BD). The ITO/DNTPD/NPB/MADN:dopant/Alq3/Al-LiF device obtained from 4 shows blue EL spectrum at 469 nm and high efficiency 3.02 cd/A at 7 V 8 also shows blue EL spectrum around λmax = 468 nm, efficiency of 3.51 cd/A and a c.d. of 25.94 mA/cm2 (855.7 cd/m2) at 7 V.

Synthetic Metals published new progress about Electroluminescence. 183994-94-7 belongs to class bromides-buliding-blocks, name is 4-(Bromomethyl)-N,N-diphenylaniline, and the molecular formula is C19H16BrN, Application of 4-(Bromomethyl)-N,N-diphenylaniline.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Rover, Stephan published the artcile6-Alkoxy-5-aryl-3-pyridinecarboxamides, a New Series of Bioavailable Cannabinoid Receptor Type 1 (CB1) Antagonists Including Peripherally Selective Compounds, Formula: C6H4BrNO3, the main research area is alkoxy arylpyridinecarboxamide preparation bioavailable cannabinoid CB1 antagonist.

The authors identified 6-alkoxy-5-aryl-3-pyridinecarboxamides as potent CB1 receptor antagonists with high selectivity over CB2 receptors. The series was optimized to reduce lipophilicity compared to rimonabant to achieve peripherally active mols. with minimal central effects. Several compounds that showed high plasma exposures in rats were evaluated in vivo to probe the contribution of central vs peripheral CB1 agonism to metabolic improvement. Both rimonabant and I, a potent brain penetrant CB1 receptor antagonist, significantly reduced the rate of body weight gain. However, II, a mol. with markedly reduced brain exposure, had no significant effect on body weight PK studies confirmed similarly high exposure of both I and II in the periphery but 10-fold lower exposure in the brain for II. On the basis of these data, which are consistent with reported effects in tissue-specific CB1 receptor KO mice, it was concluded that the metabolic benefits of CB1 receptor antagonists are primarily centrally mediated as originally believed.

Journal of Medicinal Chemistry published new progress about Antiobesity agents. 41668-13-7 belongs to class bromides-buliding-blocks, name is 5-Bromo-6-hydroxynicotinic acid, and the molecular formula is C6H4BrNO3, Formula: C6H4BrNO3.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Mueller, Ralf published the artcileLong Hydrocarbon Chain Ether Diols and Ether Diacids That Favorably Alter Lipid Disorders in Vivo, Safety of 1-Bromo-3-(3-bromopropoxy)propane, the main research area is hydrocarbon ether diol diacid lipid structure activity relationship antiobesity.

Long hydrocarbon chain ethers with bis-terminal hydroxyl or carboxyl groups have been synthesized and evaluated for their potential to favorably alter lipid disorders including metabolic syndrome. Compounds were assessed for their effects on the de novo incorporation of radiolabeled acetate into lipids in primary cultures of rat hepatocytes as well as for their effects on lipid and glycemic variables in female obese Zucker fatty rats following 1 and 2 wk of daily oral administration. The most active compounds were found to be sym. with four to five methylene groups separating the central ether functionality and the gem di-Me or methyl/aryl substituents. Biol. activity was found to be greatest for tetramethyl-substituted ether diols, while bis(arylmethyl) derivatives, diethers , and di-Ph ethers were the least active. For the most biol. active compound 28, we observed as much as a 346% increase in serum HDL-cholesterol and a 71% reduction in serum triglycerides at the highest dose administered (100 mg/kg) after 2 wk of treatment. For one compound we observed a 69% reduction in non-HDL-cholesterol, accompanied by a 131% increase in HDL-cholesterol and an 84% reduction in serum triglycerides under the same treatment conditions.

Journal of Medicinal Chemistry published new progress about Antiobesity agents. 58929-72-9 belongs to class bromides-buliding-blocks, name is 1-Bromo-3-(3-bromopropoxy)propane, and the molecular formula is C6H12Br2O, Safety of 1-Bromo-3-(3-bromopropoxy)propane.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Nishihara, Ryo published the artcileAzide- and Dye-Conjugated Coelenterazine Analogues for a Multiplex Molecular Imaging Platform, Recommanded Product: 2-(4-(2-Bromoethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, the main research area is azide dye conjugation coelenterazine analog luminescence mol imaging luciferase.

Native coelenterazine (nCTZ) is a common substrate to most marine luciferases and photoproteins. In this study, nine novel dye- and azide-conjugated CTZ analogs were synthesized by conjugating a series of fluorescent dyes or an azide group to the C-2 or C-6 position of the nCTZ backbone to obtain bulkiness-driven substrate specificity and potential chemiluminescence/bioluminescence resonance energy transfer (C/BRET). The investigation on the optical properties revealed that azide-conjugated CTZs emit greatly biased bioluminescence to ALucs and ca. 130 nm blue-shifted bioluminescence with RLuc8.6 in living animal cells or lysates. The corresponding kinetic study explains that azide-conjugated CTZ exerts higher catalytic efficiency than nCTZ. Nile red-conjugated CTZ completely showed red-shifted CRET spectra and characteristic BRET spectra with artificial luciferase 16 (ALuc16). No or less spectral overlap occurs among [Furimazine-NanoLuc], [6-N3-CTZ-ALuc26], [6-pi-OH-CTZ-RLuc8.6], and [6-N3-CTZ-RLuc8.6] pairs, because of the substrate-driven luciferase specificity and color shifts, providing a crosstalk-free multiplex bioassay platform. The unique bioluminescence system appends a new toolbox to bioassays and multiplex mol. imaging platforms. This study is the first example that systematically synthesized fluorescent dye-conjugated CTZs and applied them for a bioluminescence assay system.

Bioconjugate Chemistry published new progress about Biological imaging. 913836-27-8 belongs to class bromides-buliding-blocks, name is 2-(4-(2-Bromoethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, and the molecular formula is C14H20BBrO3, Recommanded Product: 2-(4-(2-Bromoethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Scholz, Johannes published the artcileSynthesis of diisocyanides with phenolic groups and their polymerization to helically chiral poly(quinoxaline-2,3-diyl)s, Application In Synthesis of 10172-35-7, the main research area is helically chiral polyquinoxaline diyl stability organocatalyst.

The development of synthetic routes which lead to five new diisocyanide monomers with one or two phenolic groups is described. Their polymerization behavior is studied with Pd- and Ni-based initiators, as well as under microwave irradiation The polymerizability is mainly dominated by steric effects as is concluded from experiments using different protecting groups. Chiroptical properties of these new polymers are studied by CD-spectroscopy. After deprotection, helically chiral poly(quinoxalin-2,3-diyl)s are obtained which display a Bronsted function attached to a stereolabile biaryl axis whose configuration should be influenced by the chiral polymer backbone. © 2015 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2015.

Journal of Polymer Science, Part A: Polymer Chemistry published new progress about Circular dichroism. 10172-35-7 belongs to class bromides-buliding-blocks, name is 2-Bromo-4-methoxy-6-nitroaniline, and the molecular formula is C7H7BrN2O3, Application In Synthesis of 10172-35-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Kolluru, Srinivas published the artcileNickel-Catalyzed Annulations of ortho-Haloarylimines, Safety of Ethyl 2-bromo-4-fluorobenzoate, the main research area is nickel catalyzed annulation ortho haloarylimine anti selectivity; amines; catalysis; chemometrics; kinetics; mechanism; nickel; reaction parametrization; spectroscopy; spirocycles.

We report the discovery, development, and mechanism of a nickel-catalyzed annulation reaction between o-haloarylimines and electron-poor olefins. The reaction produces two adjacent anti stereocenters and a free secondary amine. Spirocycles are formed from cyclic imines. We characterized the key oxidative addition intermediate and identified a major path leading to competing homocoupling products. The activation energy of oxidative addition and the rate of oxidative addition complex isomerization were determined The sensitivity of the reaction to reaction conditions was established in a quant. manner and both the scope and limitations of the method are presented.

ACS Catalysis published new progress about Activation energy. 651341-68-3 belongs to class bromides-buliding-blocks, name is Ethyl 2-bromo-4-fluorobenzoate, and the molecular formula is C9H8BrFO2, Safety of Ethyl 2-bromo-4-fluorobenzoate.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Singh, I. D. published the artcileElectronic absorption spectra of 3-fluoro-6-bromotoluene and 4-fluoro-3-bromotoluene vapors, Recommanded Product: 1-Bromo-4-fluoro-2-methylbenzene, the main research area is electronic spectra fluorobromotoluene; toluene fluoro bromo electronic spectra.

The vapor absorption bands of 3-fluoro-6-bromotoluene (I) and 4-fluoro-3-bromotoluene (II), belonging to an allowed electronic transition, were photographed for the 1st time. I yields ∼70 sharp red-degraded bands in the 2560-2830-Å region with the (0,0) band at 2752.8 Å. The observed frequencies were 767 and 1008 cm-1 of the ground state and 256, 491, 688, and 1011 cm-1 of the excited state. In II, ∼55 red-degraded bands lying in the 2515-2835-Å region were obtained with the (0,0) band at 2745.5 A. These bands were explained in terms of 741- and 1004- cm-1 ground state and 238-, 448-, 607-, 860-, 1212-, and 1246- cm-1 excited-state fundamentals. These frequencies were assigned to definite modes of vibration and correlated with ir frequencies.

Indian Journal of Pure and Applied Physics published new progress about UV and visible spectra. 452-63-1 belongs to class bromides-buliding-blocks, name is 1-Bromo-4-fluoro-2-methylbenzene, and the molecular formula is C7H6BrF, Recommanded Product: 1-Bromo-4-fluoro-2-methylbenzene.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Chen, Ya-Jing published the artcileEnantioselective Rhodium-Catalyzed Arylation of Cyclic N-Sulfamidate Alkylketimines: A New Access to Chiral β-Alkyl-β-aryl Amino Alcohols, Safety of 2-(4-(2-Bromoethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, the main research area is sulfamidate preparation enantioselective addition arylboronate cyclic sulfamidate alkylketimine; rhodium catalyzed arylation sulfamidate preparation alkylarylamino alc conversion.

The enantioselective rhodium-catalyzed 1,2-addition of arylboronates to cyclic N-sulfamidate alkylketimines was developed. With a rhodium/diene complex as catalyst, high enantioselectivity and broad functional group tolerance were observed The resulting sulfamidates can easily be converted into chiral β-alkyl-β-aryl amino alcs.

Organic Letters published new progress about 1,2-Addition reaction. 913836-27-8 belongs to class bromides-buliding-blocks, name is 2-(4-(2-Bromoethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, and the molecular formula is C14H20BBrO3, Safety of 2-(4-(2-Bromoethoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Talukdar, Abhijit published the artcileGas chromatography- mass spectrometric analysis of the essential oil of eaglewood (Aquilaria agallocha Roxb), Category: bromides-buliding-blocks, the main research area is Aquilaria essential oil furanoid aldehyde ketone alc acid.

Objective: The investigation was carried out to study the phytochem. constituents of agar oil of Aquilaria agallocha grown in Assam. Methods: Fungal infected agar laden wooden chips grown in Assam were soaked in water for 6 to 7 days and grounded into smaller pieces and hydro distilled to obtain the oil. 2 μL of the oil sample diluted in methanol was used for GC/MS anal. to study the chem. constituents. Results: GC-MS anal. of the oil has shown the presence of at least 35 different compounds, out of which 17 compounds were identified. Three furanoids viz. 3 methyl-2-(2 methyl-2-butenyl)-furan; 2-isobuteyl-3 Me furan and 3-methyl-2-(2-oxopropyl)furan were identified as the main aromatic components of the oil. Besides these, some acids, ketones alc. and aldehydes were also identified and reported here. Conclusion: Variation in the quality of the oil has been observed depending upon geog. region on which the trees are grown, age of the plant and extent of disease lesions formed in the wood, which was evident by studying the phytochem. constituents of the oil.

International Journal of Pharmacy and Pharmaceutical Sciences published new progress about Aquilaria malaccensis. 56523-59-2 belongs to class bromides-buliding-blocks, name is 15-Bromopentadecanoic acid, and the molecular formula is C15H29BrO2, Category: bromides-buliding-blocks.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary