Category: bromides-buliding-blocks

Li, Songyi published the artcileTransition Metal Free Stannylation of Alkyl Halides: The Rapid Synthesis of Alkyltrimethylstannanes, Safety of 1-Bromododecane, the publication is Journal of Organic Chemistry (2022), 87(6), 4291-4297, database is CAplus and MEDLINE.

A transition metal free stannylation reaction of alkyl bromides and iodides with hexamethyldistannane was developed. This protocol is operationally convenient and features a rapid reaction and good functional group tolerance. A wide range of functionalized primary and secondary alkyl and benzyl tri-Me stannanes were prepared in moderate to excellent yields. The success of the gram-scale procedure and tandem Stille coupling reaction has allowed this protocol to demonstrate potential for application in organic synthesis. Both exptl. and theor. studies reveal the mechanistic details of this stannylation reaction.

Journal of Organic Chemistry 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 C12H25Br, Safety of 1-Bromododecane.

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

Li, Ya-Syuan published the artcileCerium(III) triflate-catalyzed cycloaddition reaction in aqueous conditions to substituted naphthotriazolediones, Product Details of C12H25Br, the publication is Journal of the Chinese Chemical Society (Weinheim, Germany) (2022), 69(5), 849-855, database is CAplus.

In this study, the cerium(III) trifluoromethanesulfonate-catalyzed cycloaddition of 1,4-naphthoquinone with functionalized azides in aqueous solutions was used to synthesize naphtho[2,3-d][1,2,3]triazole-4,9-dione derivatives Moreover, this method boasts scalability and completes the synthesis of two key biol. compounds This method’s advantages are environmentally friendly reaction conditions, easy applicability in large-scale operations, broad structurally diverse products produced in high yields and the recyclability of catalysts.

Journal of the Chinese Chemical Society (Weinheim, 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 C12H25Br, Product Details of C12H25Br.

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

Li, Minglei published the artcileSynthesis and fungicidal activities of (E)-α-oxocyclododecanone oxime ethers, COA of Formula: C7H5Br2F, the publication is Nongyaoxue Xuebao (2006), 8(3), 209-213, database is CAplus.

A series of (E)-α-oxocyclododecanone oxime ethers were synthesized by etherification of corresponding hydroxylimines in yields of 59%-92%. The (E)-configuration was confirmed by single X-ray diffraction anal. of a representative compound Bioassay results showed that most of the synthesized compounds present good fungicidal activities against Rhizoctonia solani, Cladosporium cucumerinum, Colletotrichum orbiculare, Botrytis cinerea, Fusarium oxysporum, and Phomopsis asparagi. For example, the EC₅₀ values of I against mentioned-above six fungi were 13, 9, 12, 19, 14, 3 mg/L, resp.

Nongyaoxue Xuebao 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, COA of Formula: C7H5Br2F.

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

Li, Zeqing published the artcileMicrowave-assisted, Ir-catalyzed aromatic C-H borylation, Category: bromides-buliding-blocks, the publication is Research on Chemical Intermediates (2013), 39(4), 1917-1926, database is CAplus.

One-step conversions of 1,3-disubstituted benzenes to aryl boronates and 2,6-disubstituted pyridines to heteroaryl boronates are described. Microwave heating was used for all reactions. [(COD)Ir(μ-OMe)]₂ and 4,4′-di-tert-butyl-2,2′-bipyridine were used as catalysts, in Me tert-Bu ether. Acceleration of the rate of reaction was remarkable compared with that of same reaction under conventional heating conditions.

Research on Chemical Intermediates published new progress about 401797-04-4. 401797-04-4 belongs to bromides-buliding-blocks, auxiliary class Bromide,Boronic acid and ester,Benzene,Ether,Boronate Esters,Boronic acid and ester, name is 2-(3-Bromo-5-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane, and the molecular formula is C13H18BBrO3, Category: bromides-buliding-blocks.

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

Beniazza, Redouane published the artcileFree-Radical Carbo-Alkenylation of Olefins: Scope, Limitations and Mechanistic Insights, Quality Control of 401-55-8, the publication is Chemistry – A European Journal (2017), 23(10), 2439-2447, database is CAplus and MEDLINE.

The three-component free-radical carbo-alkenylation of electron-rich olefins has been studied, varying the substitution pattern in the alkene, in the radical precursor and in the final acceptor. New vinylsulfones were also prepared and their reactivity investigated. The scope and limitations of the process was established, and the reaction mechanism clarified using selected dienes as radical clocks. It was thus recognized that the reversible addition onto the olefin of the released sulfonyl group is an important event, which should not be overlooked when using such multicomponent carbo-alkenylation reactions.

Chemistry – A European Journal 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, Quality Control of 401-55-8.

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

Chen, Hung-Yang published the artcilePolymer side-chain substituents elucidate thermochromism of benzodithiophene-dithiophenylacrylonitrile copolymers – polymer solubility correlation of thermochromism and photovoltaic performance, Recommanded Product: 2-Bromo-3-(2-ethylhexyl)thiophene, the publication is Polymer Chemistry (2017), 8(24), 3689-3701, database is CAplus.

Nine pBCNx polymers based on a donor-π-acceptor benzo[1,2-b:4,5-b’]dithiophene-(E)-2,3-di(thiophen-2-yl)acrylonitrile main-chain structure and n-octyl/2-ethylhexyl as the side-chain substituents have been designed and synthesized. The thermochromism of the pBCNx polymers has been carefully examined in both solution and the thin-film state. With addnl. evidences from Raman spectroscopy and AFM microscopy, we have deciphered the varied colors of nine pBCNx polymers in solution and the pronounced thin-film thermochromism only observed for certain pBCNx polymers, i.e., pBCN4, pBCN5, pBCN6, and pBCN8. The alkyl side-chain, and hence the solubility or aggregation of pBCNx polymers, is a main factor of the varied color in solution and the varied thermochromism in the thin film. We have identified that a stronger main-chain and main-chain interaction are present on the (E)-2,3-di(thiophen-2-yl)acrylonitrile moiety, whereas the poor to moderate solubility pBCN3, pBCN5′ and pBCN7 exhibit pronounced thermochromism in solution, and pBCN4, pBCN5, pBCN6 and pBCN8 are four polymers which have good solubility in solution and show thermochromism in the thin-film state. We took navy blue pBCN3 (poor solubility), magenta pBCN4 (good solubility), and reddish purple pBCN5′ (moderate solubility) for the fabrication of bulk heterojunction organic photovoltaics (OPVs). With a solvent annealing treatment, the power conversion efficiency of the OPVs has been improved significantly from 4.7% to 6.2% for the good solubility pBCN4, but there is little and no improvement for the moderate solubility pBCN5′ and poor solubility pBCN3, resp. Our study verifies that the good OPV performance of the pBCNx polymers can be correlated to the pronounced thin-film thermochromism. A good solubility of the polymer is a common characteristic of a material with significant thin-film thermochromism and good OPV performance.

Polymer Chemistry 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, Recommanded Product: 2-Bromo-3-(2-ethylhexyl)thiophene.

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

Liu, Lilian Kao published the artcileReaction of aromatic and unsaturated compounds with the potassium permanganate/HCl (HBr) acetonitrile reagent, Computed Properties of 594-81-0, the publication is Journal of the Chinese Chemical Society (Taipei) (1996), 43(1), 61-6, database is CAplus.

Addition of hydrochloric or hydrobromic acid to a solution of potassium permanganate in acetonitrile produced a homogeneous mixture, which is suitable for laboratory chlorination or bromination, resp. Aromatic compounds more reactive than alkylbenzenes can be chlorinated or brominated without addnl. catalyst. Alkenes and alkynes give the corresponding vicinal dihaloalkanes and vinyl halides. All reactions complete within two hours under mild condition (25-60°) with excellent to moderate yields.

Journal of the Chinese Chemical Society (Taipei) published new progress about 594-81-0. 594-81-0 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic hydrocarbon chain, name is 2,3-Dibromo-2,3-dimethylbutane, and the molecular formula is C6H12Br2, Computed Properties of 594-81-0.

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

Zhang, Xiaoyi published the artcileTetraphenylethylene-rufigallol-tetraphenylethylene trimers: Novel fluorescence liquid crystals in aggregated states, Related Products of bromides-buliding-blocks, the publication is Journal of Molecular Structure (2022), 131643, database is CAplus.

This work reported two novel liquid crystals with good fluorescence in aggregated states. Two tetraphenylethylene-rufigallol-tetraphenylethylene trimers were prepared in simple procedure. The columnar liquid crystalline behaviors of compound I [R = pentyl, dodecyl] were confirmed by the anal. of differential scanning calorimetry, polarizing optical microscopy and X-ray diffraction. Compound I [R = dodecyl] exhibited an ordered hexagonal columnar mesophase. They possessed excellent AIE fluorescence properties in THF-H₂O solution, solid film and mesophase. The fluorescence quantum yields of compounds I were 12% and 22% in solid films, 14% and 24% in mesophase, resp. The exptl. results showed that the liquid crystalline properties and fluorescence properties were tuned by the lengths of the terminal alkyl chains.

Journal of Molecular Structure 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 C7H8O3, Related Products of bromides-buliding-blocks.

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

Cui, Ning published the artcileNickel-Catalyzed Reductive Coupling of γ-Metalated Ketones with Unactivated Alkyl Bromides, Application In Synthesis of 111-83-1, the publication is Organic Letters (2022), 24(22), 3987-3992, database is CAplus and MEDLINE.

A nickel-catalyzed reductive cross-coupling reaction of aryl cyclopropyl ketones with easily accessible unactivated alkyl bromides to access aryl alkyl ketones was developed. This strategy facilitated access to various of γ-alkyl substituted ketones via ring opening of cyclopropyl ketones (26 examples, 50-90% yield). Initial mechanistic studies revealed that the reaction proceeds via a radical cleavage of the alkyl bromide.

Organic Letters 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, Application In Synthesis of 111-83-1.

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

Li, Hao-Chun published the artcileColor tuning and highly efficient blue emitters of finite diphenylamino-containing oligo(arylenevinylene) derivatives using fluoro substituents, Recommanded Product: 4-Bromo-1-(bromomethyl)-2-fluorobenzene, the publication is Advanced Functional Materials (2007), 17(4), 520-530, database is CAplus.

New fluoro derivatives of Ph₂N-containing (Ph: phenyl) oligo(arylenevinylene) derivatives were prepared by using double Heck-coupling reactions or Horner-Wadsworth-Emmons reactions. These oligomers are highly fluorescent (fluorescence quantum yields Φ = 0.93-0.68) with emissions in a broad wavelength region (448-579 nm), depending on the position of the fluoro substituents. The highest occupied and LUMO (HOMO-LUMO) energy levels of these oligomers were characterized by electrochem. and UV spectroscopy. The effects of the fluoro substituents on the energy levels are rationalized with HOMO-LUMO simulations. In a classical organic light emitting diode (OLED), one representative (5a) shows a remarkable external quantum efficiency value (η_ext = 4.87 %) at J = 20 mA cm^-2; the maximum brightness at 10.2 V is 22,506 cd m^-2 (λ = 458 nm; Commission Internationale de l’Eclairage (CIE) coordinates x = 0.14, y = 0.14) with a full width at half-maximum of 54 nm, demonstrating the superiority of these fluoro-containing oligomers in OLED devices.

Advanced Functional Materials 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, Recommanded Product: 4-Bromo-1-(bromomethyl)-2-fluorobenzene.

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