Author: Jessica.F

Leyva-Perez, Antonio published the artcileOxyhalogenation of Activated Arenes with Nanocrystalline Ceria, Name: 1-Bromo-3-(3-bromopropoxy)propane, the main research area is nanocrystalline ceria oxyhalogenation activated arene.

Arenes can be chlorinated, brominated, and iodinated in the presence of CeO2 nanoparticles under aerobic conditions. In a biomimetic approach, active electrophilic halogen species are generated from either organic or inorganic halogen compounds and are trapped by arenes. This C-H transformation can be applied to the synthesis of naturally occurring products.

ACS Catalysis published new progress about Aromatic hydrocarbons Role: RCT (Reactant), RACT (Reactant or Reagent). 58929-72-9 belongs to class bromides-buliding-blocks, name is 1-Bromo-3-(3-bromopropoxy)propane, and the molecular formula is C6H12Br2O, Name: 1-Bromo-3-(3-bromopropoxy)propane.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Yan, Qiaozhi published the artcileRh-Catalyzed Asymmetric Hydrogenation of α,β- and β,β-Disubstituted Unsaturated Boronate Esters, Product Details of C8H6BrFO2, the main research area is phenethyl boronate chiral preparation styrylboronate asym hydrogenation rhodium catalyst; chiral amine alc preparation asym hydrogenation styrylboronate oxidation amination; asymmetric catalysis; asymmetric hydrogenation; chiral boronate; enantioselectivity; unsaturated boronates.

Chiral phenethyl boronates ArCHRCH2Bpin and ArCH2CHRBpin were prepared by asym. hydrogenation of α- and β-substituted β-styrylboronates. A highly enantioselective hydrogenation of α,β-unsaturated boronate esters catalyzed by Rh-(S)-DTBM-Segphos complex has been developed. Both (Z)-α,β- and β,β-disubstituted substrates can be successfully hydrogenated to afford chiral boronates with excellent enantioselectivities, up to 98% ee. Furthermore, the obtained chiral boronate esters, as important versatile synthetic intermediates are successfully transformed to the corresponding chiral alcs., amines and other important derivatives with maintained enantioselectivities.

Chemistry – A European Journal published new progress about Alcohols, chiral Role: SPN (Synthetic Preparation), PREP (Preparation). 647020-71-1 belongs to class bromides-buliding-blocks, name is Methyl 2-bromo-3-fluorobenzoate, and the molecular formula is C8H6BrFO2, Product Details of C8H6BrFO2.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Chen, Xiaohan published the artcileRedox deracemization of α-substituted 1,3-dihydroisobenzofurans, Computed Properties of 74317-85-4, the main research area is alpha substituted dihydroisobenzofuran preparation enantioselective; dihydroisobenzofuran alpha substituted one pot redox resolution.

Chiral α-substituted 1,3-dihydroisobenzofurans are key scaffolds in a number of bioactive natural products and synthetic pharmaceuticals. However, catalytic asym. approaches have been rarely developed. Here, a redox deracemization technol. is adopted to address the catalytic asym. synthesis. A broad range of α-aryl substituted 1,3-dihydroisobenzofurans are effectively deracemized in high efficiency with excellent ee. α-alkynyl substituted ethers were also compatible with the deracemization technol.

Chinese Chemical Letters published new progress about Benzenecarboxylic acids Role: RCT (Reactant), RACT (Reactant or Reagent). 74317-85-4 belongs to class bromides-buliding-blocks, name is 2-Bromo-4-methoxybenzoic acid, and the molecular formula is C8H7BrO3, Computed Properties of 74317-85-4.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Erami, Roghayeh Sadeghi published the artcileSuzuki-Miyaura C-C coupling reactions catalyzed by supported Pd nanoparticles for the preparation of fluorinated biphenyl derivatives, COA of Formula: C7H6BrF, the main research area is fluorobiphenyl preparation green chem; arylboronic acid aryl halide Suzuki Miyaura coupling palladium nanocatalyst.

The preparation of different fluorinated biphenyl derivatives RR1 (R = 4-fluorophenyl, 2-fluorophenyl, 3-fluorophenyl, 2-methyl-4-fluorophenyl, 2-methyl-5-fluorophenyl; R1 = Ph, 4-vinylphenyl, 4-carboxyphenyl, 4-fluorophenyl) by Suzuki-Miyaura coupling reactions catalyzed by a heterogeneous system (G-COOH-Pd-10) based on Pd nanoparticles supported onto COOH-modified graphene has been described. The catalytic activity of the hybrid material G-COOH-Pd-10 has been tested in Suzuki-Miyaura C-C coupling reactions observing excellent versatility and good conversion rates in the reactions of phenylboronic acid, 4-vinylphenylboronic acid, 4-carboxyphenylboronic acid, and 4-fluorophenylboronic acid with 1-bromo-4-fluorobenzene. In addition, the influence of the aryl bromide has been studied by carrying out reactions of 4-fluorophenylboronic acid with 1-bromo-2-fluorobenzene, 1-bromo-3-fluorobenzene, 1-bromo-4-fluorobenzene, 2-bromo-5-fluorotoluene, and 2-bromo-4-fluorotoluene. Finally, catalyst recyclability tests show a good degree of reusability of the system based on G-COOH-Pd-10 as the decrease in catalytic activity after five consecutive catalytic cycles in the reaction of 1-bromo-4-fluorobenzene with 4-florophenylboronic acid for 48 h of reaction is lower than 8%, and while in the case of reactions for three hours, the recyclability of the systems is much lower.

Catalysts published new progress about Aryl bromides Role: RCT (Reactant), RACT (Reactant or Reagent) (fluoro-). 452-63-1 belongs to class bromides-buliding-blocks, name is 1-Bromo-4-fluoro-2-methylbenzene, and the molecular formula is C7H6BrF, COA of Formula: C7H6BrF.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Amano, Taisei published the artcileNew Strategy for Synthesis of Bis-Pocket Metalloporphyrins Enabling Regioselective Catalytic Oxidation of Alkanes, Application of Methyl 3,5-dibromo-4-methylbenzoate, the main research area is metalloporphyrin ruthenium double pocket preparation oxidation catalyst; alkane oxidation preparation alkanol alkanone ruthenium metalloporphyrin double pocket.

Meso-Quaterphenyl-substituted metalloporphyrins (bis-pocket porphyrins) were prepared; the ruthenium porphyrin undergoes oxidation to dioxoruthenium species, which catalyze oxidation of alkanes by pyridine N-oxides into alkanols and alkanones,. Cytochrome P 450 selectively hydroxylates the ω and ω-1 positions of fatty acids. Among synthetic oxidizing catalysts, Suslick’s bis-pocket porphyrin Mn or Fe complex achieved ω oxidation for the first time, but the yield in the preparation of the catalyst was poor due to steric hindrance, and in addition, the catalyst turnover number in the oxidation reaction was low. We have devised a new synthetic strategy involving the introduction of eight bulky aryl groups at the 2,6-positions of the meso-Ph groups after construction of the porphyrin skeleton. This strategy greatly improved the yield in synthesis of the catalyst, and a number of derivatives of bis-pocket porphyrin and their metal complexes were prepared These Ru complexes show unique ω-1 selectivity and provide a much higher turnover number in the oxidation of linear alkane with 2,6-dichloropyridine N-oxide, as compared to the reaction catalyzed by conventional Ru porphyrins.

Bulletin of the Chemical Society of Japan published new progress about Aliphatic alcohols Role: SPN (Synthetic Preparation), PREP (Preparation). 74896-66-5 belongs to class bromides-buliding-blocks, name is Methyl 3,5-dibromo-4-methylbenzoate, and the molecular formula is C9H8Br2O2, Application of Methyl 3,5-dibromo-4-methylbenzoate.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Taleshi, Mojtaba S. published the artcileSynthesis and Characterization of Arsenolipids: Naturally Occurring Arsenic Compounds in Fish and Algae, Category: bromides-buliding-blocks, the main research area is arsenolipid arsenic lipid fatty acid long chain preparation reactivity.

Arsenic-containing lipids (arsenolipids) are natural products present in fish and algae. Because these compounds occur in foods, there is considerable interest in their human toxicol. We report the synthesis and characterization of seven arsenic-containing lipids, including six natural products. The compounds comprise dimethylarsinyl groups attached to saturated long-chain hydrocarbons (three compounds), saturated long-chain fatty acids (two compounds), and monounsaturated long chain fatty acids (two compounds). The arsenic group was introduced through sodium dimethylarsenide or bis(dimethylarsenic) oxide. The latter route provided higher and more reproducible yields, and consequently, this pathway was followed to synthesize six of the seven compounds Mass spectral properties are described to assist in the identification of these compounds in natural samples. The pure synthesized arsenolipids will be used for in vitro experiments with human cells to test their uptake, biotransformation, and possible toxic effects.

Organometallics published new progress about Lipids Role: SPN (Synthetic Preparation), PREP (Preparation) (arsenolipids). 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

Liu, Chao published the artcilePalladium-Catalyzed Arylative Dearomatization and Subsequent Aromatization/Dearomatization/Aza-Michael Addition: Access to Zephycarinatine and Zephygranditine Skeletons, Recommanded Product: 2-Bromo-4-methoxybenzoic acid, the main research area is zephycarinatine scaffold synthesis; zephygranditine scaffold synthesis; palladium catalyzed arylative dearomatization Ugi adduct chemoselective stereoselective.

We have developed a novel palladium-catalyzed arylative dearomatization and subsequent aromatization/dearomatization/aza-Michael addition process of Ugi adducts, enabling the rapid construction of diverse zephycarinatine and zephygranditine scaffolds containing two adjacent quaternary carbon stereocenters with excellent chemoselectivity and stereoselectivity in a rapid, step-economical, and highly efficient manner. This approach shows broad substrate scope and excellent functional-group tolerance with diverse electron-rich and electron-deficient aromatic substrates. The synthetic utility of this method is further demonstrated by versatile transformations of the products.

Organic Letters published new progress about Alkaloids Role: SPN (Synthetic Preparation), PREP (Preparation) (plicamine). 74317-85-4 belongs to class bromides-buliding-blocks, name is 2-Bromo-4-methoxybenzoic acid, and the molecular formula is C8H7BrO3, Recommanded Product: 2-Bromo-4-methoxybenzoic acid.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Stoll, G. H. published the artcileSynthesis of a metabolically stable modified long-chain fatty acid salt and its photolabile derivative, Category: bromides-buliding-blocks, the main research area is stearate analog heptafluorooctadecanoate salt; fatty acid salt transport; photoaffinity labeling polypeptide sodium azoheptafluorooctadecanoate; critical micellar concentrate heptafluorooctadecanoic acid; diazirine derivative heptafluorooctadecanoate.

An analog of the long-chain fatty acid salt, sodium stearate, was synthesized in which the H atoms at carbons 2, 3, and 18 were replaced by fluorine. The key step in the synthesis was the addition of 3-iodo-2,2,3,3-tetrafluoropropanoic acid amide to 15,15,15-trifluoro-1-pentadecene. Radioactivity was introduced by catalytic reduction of 2,2,3,3,18,18,18-heptafluoro-4-octadecenoic acid amide with carrier-free tritium gas yielding a product with the specific radioactivity of 2.63 TBq/mmol. The resulting 2,2,3,3,18,18,18-heptafluoro-4-octadecenoic acid has a pKa of about 0.5 and is completely dissociated under normal physiol. conditions. The fluorinated fatty acid salt analog is readily taken up into hepatocytes and proved to be metabolically inert. In an approach to the identification of proteins involved in long-chain fatty acid salt transport across membranes and intracellular compartments, the photolabile derivative 11,11-azo-2,2,3,3,18,18,18-heptafluoro[G-3H]octadecanoic acid sodium salt was synthesized with a specific radioactivity of 2.63 TBq/mmol. Photolysis of the photolabile derivative, using a light source with a maximum emission at 350 nm, occurred with a half-life of 1.5 min. The generated carbene reacted with 14C-labeled MeOH and MeCN with covalent bond formation of 6-13%. Its efficacy for photoaffinity labeling was demonstrated by incorporation into serum albumin, the extracellular fatty acid salt-binding protein, as well as into the intracellular fatty acid salt-binding protein (FABP) of rat liver with mol. weight of 14,000.

Journal of Lipid Research published new progress about Fatty acid-binding proteins Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Okore, V. C. published the artcileGC-MS analysis of fatty acids of Irvingia gabonensis seed fat, Application of 15-Bromopentadecanoic acid, the main research area is fatty acid Irvingia seed fat.

Dika fat is the name given to the waxy material obtained from the seeds of Irvingia gabonensis (Fam. Irvingiaceae). The fat has been a subject of research in recent years, and it has been evaluated as a component of different drug delivery systems . Despite the impressive properties of this wax as have been established in the earlier studies, information on its chem. composition is rather scanty. Chem. characterization of the wax was done by GC-MS technique. The dika fat was obtained by solvent extraction, using the method described by Udeala et al (1980). A Fisons Trio 200 Quadrupole GC-MS instrument fitted with a 30m × 0.32mm (i.d.) OV-1 capillary column, was used for the anal. The column temperature was programmed to rise from 100°C to 280°C at the rate of 5°/min. The carrier gas was helium flowing at the rate of 1.5ml/min. Ionization voltage of 70eV was applied. The solvent for dika fat was n-hexane. The identity of the components of dika fat was confirmed by a combination of computer-aided identification, the eight peak index of mas spectra as well as co-chromatog. The gas chromatogram of dika fat reveals seven peaks representing major components and about the same number of peaks for the minor components.

Nigerian Journal of Natural Products and Medicine published new progress about Fats and Glyceridic oils Role: ANT (Analyte), ANST (Analytical Study) (dika). 56523-59-2 belongs to class bromides-buliding-blocks, name is 15-Bromopentadecanoic acid, and the molecular formula is C15H29BrO2, Application of 15-Bromopentadecanoic acid.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary

Carlson, Lars A. published the artcilePotential hypolipidemic agents. III. Heterocyclic compounds affecting free fatty acid mobilization in vivo, SDS of cas: 41668-13-7, the main research area is fatty acid mobilization fluoronicotinate blood; fluoropyridylacetate fatty acid mobilization blood; methylpyrazole fatty acid mobilization blood.

Compounds such as 3-methyl-5-isoxazolecarboxylic acid [4857-42-5], 5-fluoronicotinic acid [402-66-4], 5-fluoro-3-pyridylacetic acid [38129-24-7], and 3-methylpyrazole [1453-58-3] exhibited the highest inhibition of free fatty acid mobilization in blood among 188 heterocyclic compounds tested in dogs, while compounds such as 5-methyl-3-isoxazolecarboxylic acid [3405-77-4], 2-fluoronicotinic acid [393-55-5], and 3-aminobenzoic acid [99-05-8] had no effect on free fatty acid mobilization.

Acta Pharmaceutica Suecica published new progress about Fatty acids Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 41668-13-7 belongs to class bromides-buliding-blocks, name is 5-Bromo-6-hydroxynicotinic acid, and the molecular formula is C6H4BrNO3, SDS of cas: 41668-13-7.

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary