Category: bromides-buliding-blocks

Shi, Zhi-Cai published the artcileModulation of Peripheral Serotonin Levels by Novel Tryptophan Hydroxylase Inhibitors for the Potential Treatment of Functional Gastrointestinal Disorders, Category: bromides-buliding-blocks, the publication is Journal of Medicinal Chemistry (2008), 51(13), 3684-3687, database is CAplus and MEDLINE.

The discovery of a novel class of peripheral tryptophan hydroxylase (TPH) inhibitors is described. This class of TPH inhibitors exhibits excellent potency in in vitro biochem. and cell-based assays, and it selectively reduces serotonin levels in the murine intestine after oral administration without affecting levels in the brain. These TPH1 inhibitors may provide novel treatments for gastrointestinal disorders associated with dysregulation of the serotonergic system, such as chemotherapy-induced emesis and irritable bowel syndrome.

Journal of Medicinal Chemistry 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 C15H14Cl2S2, Category: bromides-buliding-blocks.

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

Dey, Madhudeepa published the artcileSodium hypochlorite-promoted novel synthesis of organic ammonium tribromides and application of phenanthroline hydrotribromide in chemoselective oxidation of organic sulfides by hydrogen peroxide, Computed Properties of 111865-47-5, the publication is Chemistry Letters (2014), 43(5), 631-633, database is CAplus.

A novel method of synthesis of organic ammonium tribromides (OATBs) is developed by using an inexpensive and eco-friendly sodium hypochlorite as oxidant for conversion of Br^– to Br₃^–. The OATBs thus prepared include both quaternary ammonium tribromides and N-heterocyclic tribromides. A new addition to the family of OATBs is made in the form of phenanthroline hydrotribromide. The efficacy of this new tribromide as catalyst is ascertained in the oxidative transformation of organic sulfides to their corresponding sulfoxides and sulfones by hydrogen peroxide.

Chemistry Letters published new progress about 111865-47-5. 111865-47-5 belongs to bromides-buliding-blocks, auxiliary class Benzenes, name is Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, and the molecular formula is C10H16Br3N, Computed Properties of 111865-47-5.

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

Dey, Madhudeepa published the artcileNovel method of synthesis of quaternary ammonium tribromides and investigation of catalytic role of benzyltrimethylammonium tribromide in oxidation of alcohols to carbonyl compounds, Application In Synthesis of 111865-47-5, the publication is Synthetic Communications (2013), 43(12), 1734-1742, database is CAplus.

Stable crystalline organic quaternary ammonium tribromides (QATBs) were easily synthesized by the oxidation of the corresponding organic ammonium bromides (QABs) with ammonium persulfate. The reactions were performed under solvent-free conditions in presence of sulfuric acid and silica as supporting agent. Two equivalents of potassium bromide were used as the source of addnl. bromides for quant. conversion of QABs to QATBs. Ammonium persulfate, a cheap and readily available oxidant carries out the bromide oxidation to tribromide very effectively under solvent-free conditions. The synthesized QATBs catalyzed the oxidation of alcs. to carbonyl compounds with hydrogen peroxide as oxidant in high yields under mild reaction conditions.

Synthetic Communications published new progress about 111865-47-5. 111865-47-5 belongs to bromides-buliding-blocks, auxiliary class Benzenes, name is Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, and the molecular formula is C10H16Br3N, Application In Synthesis of 111865-47-5.

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

Dey, Madhudeepa published the artcileSynthesis of quaternary ammonium tribromides. A novel green approach, Recommanded Product: Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, the publication is Green Chemistry Letters and Reviews (2012), 5(4), 639-642, database is CAplus.

Potassium permanganate (KMnO₄) oxidizes quaternary ammonium bromides to the corresponding tribromides conveniently and effectively. The procedure carried out solvent-free and adopted as environmentally friendly. High purity, excellent yield, shorter reaction time and mild reaction conditions are some of the advantages of this synthetic protocol. The efficacy of quaternary ammonium tribromides, especially benzyltrimethylammonium tribromide, was also studied for bromination of some organic substrates.

Green Chemistry Letters and Reviews published new progress about 111865-47-5. 111865-47-5 belongs to bromides-buliding-blocks, auxiliary class Benzenes, name is Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide, and the molecular formula is C10H16Br3N, Recommanded Product: Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide.

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

Lanzi, Matteo published the artcileCyclic Diaryl λ³-Bromanes as Original Aryne Precursors, Name: 2-Bromo-5-methoxybenzene boronic acid, the publication is Angewandte Chemie, International Edition (2021), 60(27), 14852-14857, database is CAplus and MEDLINE.

Despite the widespread application of hypervalent iodines, the corresponding λ³-bromanes are less explored. Herein the authors report a general, safe, and high-yielding strategy to access cyclic diaryl λ³-bromanes. These unique compounds feature reactivity that is appealing and complementary to that of λ³-iodanes, generating arynes under mild reaction conditions and in the presence of a weak base. Accordingly, formal meta-selective transition-metal-free C-O and C-N couplings may be achieved. Mechanistic studies unambiguously support the aryne generation mechanism.

Angewandte Chemie, International Edition published new progress about 89694-44-0. 89694-44-0 belongs to bromides-buliding-blocks, auxiliary class Bromide,Boronic acid and ester,Benzene,Ether,Boronic Acids,Boronic acid and ester, name is 2-Bromo-5-methoxybenzene boronic acid, and the molecular formula is C7H8BBrO3, Name: 2-Bromo-5-methoxybenzene boronic acid.

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

Granados, Albert published the artcileFrom Styrenes to Fluorinated Benzyl Bromides: A Photoinduced Difunctionalization via Atom Transfer Radical Addition, Product Details of C4H6BrFO2, the publication is Organic Letters (2022), 24(26), 4750-4755, database is CAplus and MEDLINE.

An operationally simple and practical method is disclosed to achieve the difunctionalization of styrenes RCH=CH₂ (R = Ph, 2-chlorophenyl, 1-benzothiophen-6-yl, etc.), generating fluorinated benzyl bromides RCH(Br)CH₂C(F)(R¹)C(O)R² (R¹ = H, F; R² = OEt, NEt₂) via a photoinduced atom transfer radical addition process. The developed method is mild, atom-economical, and cost-effective, employs very low photocatalyst loading (1000 ppm), and is highly compatible with a broad range of functional groups on styrene. The versatility of the fluorinated benzyl bromides is demonstrated through their derivatization to a variety of valuable compounds

Organic Letters published new progress about 401-55-8. 401-55-8 belongs to bromides-buliding-blocks, auxiliary class Fluoride,Bromide,Aliphatic hydrocarbon chain,Ester, name is Ethylbromofluoroacetate, and the molecular formula is C4H6BrFO2, Product Details of C4H6BrFO2.

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

Kc, Shekhar published the artcileNickel-Catalyzed α-Carbonylalkylarylation of Vinylarenes: Expedient Access to γ,γ-Diarylcarbonyl and Aryltetralone Derivatives, Application In Synthesis of 401-55-8, the publication is Angewandte Chemie, International Edition (2020), 59(21), 8047-8051, database is CAplus and MEDLINE.

The authors report a Ni-catalyzed regioselective α-carbonylalkylarylation of vinylarenes with α-halocarbonyl compounds and arylzinc reagents. The reaction works with primary, secondary, and tertiary α-halocarbonyl mols., and electronically varied arylzinc reagents. The reaction generates γ,γ-diarylcarbonyl derivatives with α-secondary, tertiary, and quaternary carbon centers. The products can be readily converted to aryltetralones, including a precursor to Zoloft, an antidepressant drug.

Angewandte Chemie, International Edition published new progress about 401-55-8. 401-55-8 belongs to bromides-buliding-blocks, auxiliary class Fluoride,Bromide,Aliphatic hydrocarbon chain,Ester, name is Ethylbromofluoroacetate, and the molecular formula is C4H6BrFO2, Application In Synthesis of 401-55-8.

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

Uddin, Jamal Md. published the artcilePhotoinduced electron transfer quenching and sugar effects on the electrostatic interaction between an anionic Ru(II) complex and cationic bipyridinium derivatives functionalized with boronic acids, SDS of cas: 166821-88-1, the publication is Inorganica Chimica Acta (2012), 104-110, database is CAplus and MEDLINE.

The photoinduced electron transfer quenching of an anionic ruthenium(II) metal-ligand-complex (Ru(dpp(SO₃Na)))₂(mcbpy)Cl₂ by two boronic acid functionalized benzyl viologen (BV²⁺) derivatives has been investigated as well as their response to sugar. The electrostatic interaction between these two charge species lead to the formation of static quenching which is removed in presence of sugar due to the formation of a neutral zwitterionic quencher. Spectral data, quenching parameters and sugar titration curves are presented and discussed in term of future developments of optical sensors for sugar.

Inorganica Chimica Acta published new progress about 166821-88-1. 166821-88-1 belongs to bromides-buliding-blocks, auxiliary class Bromide,Boronic acid and ester,Benzyl bromide,Benzene,Boronic Acids,Boronic acid and ester, name is 2-(2-(Bromomethyl)phenyl)-5,5-dimethyl-1,3,2-dioxaborinane, and the molecular formula is C11H8O3, SDS of cas: 166821-88-1.

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

Tsagdi, A. published the artcileBlend membranes based on N1-alkyl-substituted imidazolium functionalized polymers and aromatic polyethers: influence of N1-alkyl substituent on properties and alkaline stability, Synthetic Route of 111-83-1, the publication is Polymer Bulletin (Heidelberg, Germany) (2022), 79(3), 1647-1668, database is CAplus.

N1-alkyl (octyl and dodecyl)-substituted imidazolium-based PVBC homopolymers have been synthesized via N-quaternization reaction of N1-alkyl imidazole and PVBC precursor homopolymer bearing reactive benzyl chloride moieties. Due to their poor film forming properties and water solubility, these homopolymers were blended with aromatic polyethers bearing main chain pyridine units at different compositions in order to study the effect of alkyl chain length on morphol., water uptake, swelling ability and chem. stability of the prepared membranes. The B2 blend membrane with the highest N1-dodecyl-substituted imidazolium PVBC content (65 wt%) exhibited the highest water uptake (54%) despite its lower IEC value compared to the corresponding one containing N1-octyl-substituted imidazolium PVBC, low swelling ratio and a phase separated morphol. Evaluation of the chem. stability in 3.6 M KOH solution at 80°C for 7 days revealed the degradation of imidazolium via ring opening, as evidenced by ATR-FT-IR spectroscopy. Therefore, new blends having as second constituent, the N1-alkyl-substituted imidazolium functionalized poly(PVBC-co-AA₂₀) copolymers containing acrylic acid units were fabricated targeting to the improvement of chem. stability via ionic cross linking. The prepared D1 and D2 blend membranes containing 60 and 65 wt% dodecyl-imidazolium functionalized poly(PVBC-co-AA₂₀) copolymer content, resp., were flexible, exhibited moderate IECs (1.47-1.60 meq/g) and sufficient water uptakes (up to 30%). D2 blend membrane showed excellent chem. stability after testing in 3.6 M KOH solution at 80°C for 30 days, as confirmed by ATR-FT-IR spectroscopy and TGA anal. The excellent chem. stability can probably be attributed to the steric hindrance effect of N1 dodecyl substituent which effectively protects the C2 position of imidazolium from hydroxide attack as well as to the formation of a dense, ionic crosslinked structure that hinders hydroxide penetration.

Polymer Bulletin (Heidelberg, Germany) 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 C11H17BO3S, Synthetic Route of 111-83-1.

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

Tsagdi, A. published the artcileBlend membranes based on N1-alkyl-substituted imidazolium functionalized polymers and aromatic polyethers: influence of N1-alkyl substituent on properties and alkaline stability, Category: bromides-buliding-blocks, the publication is Polymer Bulletin (Heidelberg, Germany) (2022), 79(3), 1647-1668, database is CAplus.

N1-alkyl (octyl and dodecyl)-substituted imidazolium-based PVBC homopolymers have been synthesized via N-quaternization reaction of N1-alkyl imidazole and PVBC precursor homopolymer bearing reactive benzyl chloride moieties. Due to their poor film forming properties and water solubility, these homopolymers were blended with aromatic polyethers bearing main chain pyridine units at different compositions in order to study the effect of alkyl chain length on morphol., water uptake, swelling ability and chem. stability of the prepared membranes. The B2 blend membrane with the highest N1-dodecyl-substituted imidazolium PVBC content (65 wt%) exhibited the highest water uptake (54%) despite its lower IEC value compared to the corresponding one containing N1-octyl-substituted imidazolium PVBC, low swelling ratio and a phase separated morphol. Evaluation of the chem. stability in 3.6 M KOH solution at 80°C for 7 days revealed the degradation of imidazolium via ring opening, as evidenced by ATR-FT-IR spectroscopy. Therefore, new blends having as second constituent, the N1-alkyl-substituted imidazolium functionalized poly(PVBC-co-AA₂₀) copolymers containing acrylic acid units were fabricated targeting to the improvement of chem. stability via ionic cross linking. The prepared D1 and D2 blend membranes containing 60 and 65 wt% dodecyl-imidazolium functionalized poly(PVBC-co-AA₂₀) copolymer content, resp., were flexible, exhibited moderate IECs (1.47-1.60 meq/g) and sufficient water uptakes (up to 30%). D2 blend membrane showed excellent chem. stability after testing in 3.6 M KOH solution at 80°C for 30 days, as confirmed by ATR-FT-IR spectroscopy and TGA anal. The excellent chem. stability can probably be attributed to the steric hindrance effect of N1 dodecyl substituent which effectively protects the C2 position of imidazolium from hydroxide attack as well as to the formation of a dense, ionic crosslinked structure that hinders hydroxide penetration.

Polymer Bulletin (Heidelberg, Germany) published new progress about 143-15-7. 143-15-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 1-Bromododecane, and the molecular formula is C6H12O2, Category: bromides-buliding-blocks.

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