Month: November 2022

Griggs, Billy G. published the artcileAssignment of the carbon-13 chemical shifts of ethidium bromide and analogs in deuterium oxide solution, Application of Dimidium bromide, the publication is Organic Magnetic Resonance (1980), 14(5), 371-3, database is CAplus.

The ¹³C NMR of the title compounds (I; R = Et, Me, R¹ = Ph, X = Br; R = Me, R¹ = H, X = Cl), in D₂O, were assigned. The assignments were based on fully coupled spectra, selective ¹H decoupling, chem. shift arguments, the effect of pD on chem. shifts, and spectra obtained from a selected 180°-τ-90° pulse sequence in conjunction with gated irradiation to obtain nuclear Overhauser enhancement intensification.

Organic Magnetic Resonance 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, Application of Dimidium bromide.

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

Biro, Robert published the artcilePolymeric ionic liquid absorbents for n-butanol recovery from aqueous solution, Formula: C12H25Br, the publication is AIChE Journal (2022), 68(8), e17676, database is CAplus.

A wide-ranging study of imidazolium-based polymeric ionic liquids (PILs) as absorbents in two-phase partitioning bioreactor applications is presented, with a particular focus on the removal of n-butanol from dilute aqueous solutions The study begins with a description of the synthesis and phase transition temperatures of poly(1-vinyl-3-alkylimidazolium) bromides bearing alkyl groups of different lengths, architecture, and composition, as well as analogs bearing various inorganic and carboxylate anions. Knowledge of polymer structure is used to generate insight into the solute affinity of each PIL, as quantified by the measurements of n-butanol partition coefficient (PC_BuOH) and n-butanol/water selectivity (α_b/w). These equilibrium experiments are extended to create a complete P[(VC_12-linIm)(Br)]/n-BuOH/water ternary phase diagram that is used to propose a streamlined n-butanol recovery process.

AIChE Journal 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, Formula: C12H25Br.

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

Biro, Robert published the artcilePolymeric ionic liquid absorbents for n-butanol recovery from aqueous solution, Category: bromides-buliding-blocks, the publication is AIChE Journal (2022), 68(8), e17676, database is CAplus.

A wide-ranging study of imidazolium-based polymeric ionic liquids (PILs) as absorbents in two-phase partitioning bioreactor applications is presented, with a particular focus on the removal of n-butanol from dilute aqueous solutions The study begins with a description of the synthesis and phase transition temperatures of poly(1-vinyl-3-alkylimidazolium) bromides bearing alkyl groups of different lengths, architecture, and composition, as well as analogs bearing various inorganic and carboxylate anions. Knowledge of polymer structure is used to generate insight into the solute affinity of each PIL, as quantified by the measurements of n-butanol partition coefficient (PC_BuOH) and n-butanol/water selectivity (α_b/w). These equilibrium experiments are extended to create a complete P[(VC_12-linIm)(Br)]/n-BuOH/water ternary phase diagram that is used to propose a streamlined n-butanol recovery process.

AIChE Journal 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, Category: bromides-buliding-blocks.

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

Sarkar, Bhaswati published the artcileInsights into the Formations of Host-Guest Complexes Based on the Benzimidazolium Based Ionic Liquids-β-Cyclodextrin Systems, Recommanded Product: 1-Bromooctane, the publication is ACS Physical Chemistry Au (2022), 2(1), 3-15, database is CAplus.

Inclusion complexation is one of the best strategies for developing a controlled release of a toxic drug without unexpected side effects from the very beginning of the administration to the target site. In this study, three benzimidazolium based ionic liquids (ILs) having bromide anion and cation bearing long alkyl chains, hexyl- ([C₆CFBim]Br), octyl- ([C₈CFBim]Br), and decyl- ([C₁₀CFBim]Br) were designed and synthesized as antibacterial drugs. Inclusion complexes (ICs) of studied ILs have been prepared by the combination of β-cyclodextrin (β-CD), considering these conjugations should enhance the benignity of ILs and make them potential candidates for the controlled drug release. Characterizations and structural anal. of studied ICs have been performed by ¹H NMR, 2D-ROESY NMR, FT-IR, HRMS, TGA, DSC, surface tension, ionic conductivity, dynamic light scattering (DLS), and isothermal titration calorimetry (ITC). Further, the morphol. of the ICs has been analyzed by SEM and TEM. Furthermore, neat ILs and ICs have been treated against Escherichia coli and Bacillus subtilis to investigate their antibacterial activity, which confirms the prevention of bacterium growth and the shrinkage of the bacterial cell wall. The findings of this work provide the proof of concept that studied benzimidazolium based ILs-β-CD host-guest complexes should act as a potential candidate in controlled drug delivery and other biomedical applications.

ACS Physical Chemistry Au 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, Recommanded Product: 1-Bromooctane.

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

Korber, Nikolaus published the artcileDirected synthesis of stable hydrogen polyphosphides: preparation and structural characterization of HP₁₁^2- in (NBnMe₃)₂HP₁₁ and (PBnPh₃)₂HP₁₁ as well as its comparison with the first “naked” P₁₁^3- ion in (NEtMe₃)₃P₁₁, Category: bromides-buliding-blocks, the publication is Angewandte Chemie, International Edition in English (1996), 35(10), 1107-1110, database is CAplus.

Directed synthetic routes to hydrogen polyphosphides by soft protonation of an alkali metal polyphosphide were investigated. Precise conditions for the protonation reaction were crucial; only reaction conditions that produced the acid in situ resulted in quant. and reproducable yields. Thus, reaction of Cs₃P₁₁ with benzyltrimethylammonium tribromide in NH₃(l) afforded (PhCH₂NMe₃)₂HP₁₁ in 94% yield. The structure of (PhCH₂NMe₃)₂HP₁₁ was determined by x-ray crystallog. Reaction of Cs₃P₁₁ with [EtNMe₃]I or [PhCH₂NPh₃]Br in NH₃(l) afforded (EtNMe₃)₃P₁₁ and (Ph₃PCH₂Ph)₂HP₁₁, resp. In the latter reaction, [PhCH₂NPh₃]Br acted as a weak proton donor.

Angewandte Chemie, International Edition in English 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, Category: bromides-buliding-blocks.

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

Zang, Na published the artcileSynthesis and properties of a novel porphyrin and its zinc complex, Synthetic Route of 1207448-58-5, the publication is Wuji Huaxue Xuebao (2009), 25(5), 781-786, database is CAplus.

One novel asymmetry porphyrin (5,10,15-triphenyl-20-{4-[6′-(4”-o-salicylidene)-phenylammonio]hexanoxo}phenylporphyrin) and its zinc complex were synthesized and characterized by ¹H NMR, MS and UV-Vis. By means of spectrophotometer technique, the thermodn. properties of the coordination reaction of zinc porphyrin with four substituted imidazoles were investigated. The reaction is an exothermic process with increase in entropy. For substituted imidazoles, the standard equilibrium constants decrease in the order of K^–(2-MeIm)>K^–(N-MeIm)K^–(2-Et-4-MeIm)>K^–(Im). The nonlinear optical property of porphyrin and its zinc complexes were studied by Z-scan experiment

Wuji Huaxue Xuebao published new progress about 1207448-58-5. 1207448-58-5 belongs to bromides-buliding-blocks, auxiliary class Bromide,Benzene,Phenol,Ether,Aldehyde, name is 4-((6-Bromohexyl)oxy)-2-hydroxybenzaldehyde, and the molecular formula is C3H8N2S, Synthetic Route of 1207448-58-5.

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

Braun, Aleksander published the artcileQuantitative determination of cationic surfactants by two-phase titration, SDS of cas: 518-67-2, the publication is Biuletyn Informacyiny: Barwniki, Srodki Pomocnicze (1981), 25(3), 73-6, database is CAplus.

Better reproducibility of the results was obtained in two-phase (H₂O-CHCl₃) titration of cationic surfactants (octadecyltrimethylammonium chloride  [112-03-8], etc.) with solution of lauryl sodium sulfate  [151-21-3] in the presence of mixed indicator Disulfine Blue VN150  [129-17-9]–Dimidium bromide  [518-67-2] than in the presence of methylene blue  [61-73-4]. The mechanism of color change and exptl. procedure were discussed.

Biuletyn Informacyiny: Barwniki, Srodki Pomocnicze 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, SDS of cas: 518-67-2.

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

Doerr, Alicia M. published the artcileRedox Potential as a Predictor of Polyethylene Branching Using Nickel α-Diimine Catalysts, Computed Properties of 111865-47-5, the publication is ACS Catalysis (2022), 12(1), 73-81, database is CAplus.

The ability to control polyethylene branching d. is of great interest as a means by which a polymer’s thermomech. properties may be tailored. One particularly interesting way in which this can be achieved is by altering the electronic characteristics of Pd- and Ni-based α-diimine catalysts through the inclusion of electron-withdrawing or electron-donating substituents onto the ligand scaffold; however, a few critical fundamental studies are absent from the literature. These include a systematic examination of electronic perturbations of Ni-based α-diimine catalysts, as well as how placement of donating or withdrawing substituents on the backbone vs. N-aryl moieties of the α-diimine ligand framework impact polymer topol. In addition, no method currently exists by which the polymer topol. may be predicted based on an intrinsic characteristic of the (pre)catalyst or ligand without requiring extensive polymerization studies. Herein, the authors use both exptl. and computational methods to understand how the placement of electron-donating or electron-withdrawing substituents on Ni α-diimine catalysts affects PE branching d., and compare those results to the analogous unsubstituted catalyst. Inclusion of electron-withdrawing substituents decreases resultant PE branching d., whereas electron-donating substituents exhibit little to no change in PE branching d. Finally, as the placement and identity of donating or withdrawing substituents are varied, so too is the redox half-wave potential (E_1/2) of the precatalysts, which can be used to generate a predictive curve by which PE branching d. may be estimated for other substituted Ni-based α-diimine catalysts without the need for extensive polymerization studies.

ACS Catalysis 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

Lemouzy, Sebastien published the artcileUnderstanding the Reshaping of Fluorinated Polyester Vitrimers by Kinetic and DFT Studies of the Transesterification Reaction, Application In Synthesis of 401-55-8, the publication is Chemistry – A European Journal, database is CAplus and MEDLINE.

Vitrimers are a third class of polymers gathering the mech. properties and solvent resistance of 3D thermosets and the reprocessability of thermoplastics. This unique behavior is due to the triggering of certain covalent exchange reactions that allow the network to rearrange upon application of a stimulus. The constitutive feature of vitrimers is the adoption of a glass-like viscosity during the rearrangement of the network, often due to an associative mechanism for the exchange reaction. Transesterification networks are one of the most studied type of vitrimers that usually require the incorporation of a catalyst, implying the associated drawbacks. Following up on a recent report on catalyst-free transesterification vitrimers in which the ester functions are particularly reactive thanks to the presence of fluorine atoms in α- or β-position, parallel DFT calculations and an exptl. kinetic study on model mols. are presented in order to quant. assess the effect of neighboring fluorinated groups on the transesterification reaction rate.

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, Application In Synthesis of 401-55-8.

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

Anderson, Trent E. published the artcilePoly(2,3-dihexylthieno[3,4- b ]pyrazine- alt -2,3-dihexylquinoxaline): Processible, Low-Bandgap, Ambipolar-Acceptor Frameworks via Direct Arylation Polymerization, Formula: C4Br2N2O4S, the publication is Synlett (2018), 29(19), 2542-2546, database is CAplus.

The synthesis of a new dialkyl-functionalized quinoxaline acceptor, 5,8-dibromo-2,3-dihexylquinoxaline, is reported, along with its cross-coupling with 2,3-dihexylthieno[3,4- b]pyrazine via direct arylation polymerization The resulting ambipolar-acceptor polymer poly(2,3-dihexylthieno[3,4- b]pyrazine- alt-2,3-dihexylquinoxaline) exhibits a low bandgap of 1.07 eV and high solubility The results of initial organic photovoltaic devices are also reported.

Synlett published new progress about 52431-30-8. 52431-30-8 belongs to bromides-buliding-blocks, auxiliary class Liquid Crystal &OLED Materials, name is 2,5-Dibromo-3,4-dinitrothiophene, and the molecular formula is C4Br2N2O4S, Formula: C4Br2N2O4S.

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