Author: Jessica.F

Szabo, Gyorgy published the artcileMultiparameter Optimization of Naphthyridine Derivatives as Selective α5-GABA_A Receptor Negative Allosteric Modulators, Name: 2-Bromoethyl Methyl Sulfone, the publication is Journal of Medicinal Chemistry (2022), 65(11), 7876-7895, database is CAplus and MEDLINE.

The discovery and characterization of novel naphthyridine derivatives with selective α5-GABA_AR neg. allosteric modulator (NAM) activity are disclosed. Utilizing a scaffold-hopping strategy, fused [6 + 6] bicyclic scaffolds were designed and synthesized. Among these, 1,6-naphthyridinones were identified as potent and selective α5-GABA_AR NAMs with metabolic stability, cardiac safety, and beneficial intellectual property (IP) issues. Relocation of the oxo acceptor function and subsequent modulation of the physicochem. properties resulted in novel 1,6-naphthyridines with improved profile, combining good potency, selectivity, ADME, and safety properties. Besides this, compound 20 (I), having the most balanced profile, provided in vivo proof of concept (POC) for the new scaffold in two animal models of cognitive impairment associated with schizophrenia (CIAS).

Journal of Medicinal Chemistry published new progress about 16523-02-7. 16523-02-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Sulfone,Aliphatic hydrocarbon chain, name is 2-Bromoethyl Methyl Sulfone, and the molecular formula is C8H11NO, Name: 2-Bromoethyl Methyl Sulfone.

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

Donzel, Maxime published the artcileBioinspired Photoredox Benzylation of Quinones, Product Details of C7H5Br2F, the publication is Journal of Organic Chemistry (2021), 86(15), 10055-10066, database is CAplus and MEDLINE.

3-Benzylmenadiones were obtained in good yield by using a blue-light-induced photoredox process in the presence of Fe(III), oxygen, and γ-terpinene acting as a hydrogen-atom transfer agent. This methodol. is compatible with a wide variety of diversely substituted 1,4-naphthoquinones as well as various cheap, readily available benzyl bromides with excellent functional group tolerance. The benzylation mechanism was investigated and supports a three-step radical cascade with the key involvement of the photogenerated superoxide anion radical.

Journal of Organic 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 C7H5Br2F, Product Details of C7H5Br2F.

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

Zerbe, Jerzy published the artcileA fast manual method for determination of anionic surfactants in water samples, Product Details of C20H18BrN3, the publication is Chemia Analityczna (Warsaw) (2000), 45(4), 595-599, database is CAplus.

Results of investigation on the determination of anionic surfactants (AS) in water samples by means of color reaction based on the reaction of AS with mixed indicator dimidium bromide-disulfine blue and spectrophotometric measurements of the absorbance at 525 nm are presented. In properly selected anal. conditions limits of AS detection in the procedure is 0.07 mg l^-1. This enables the use of the method in monitoring or quality control of the natural and drinking water.

Chemia Analityczna (Warsaw) 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 C13H15NO6S, Product Details of C20H18BrN3.

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

El-Tabei, A. S. published the artcileNewly synthesized quaternary ammonium bis-cationic surfactant utilized for mitigation of carbon steel acidic corrosion; theoretical and experimental investigations, Application In Synthesis of 143-15-7, the publication is Journal of Molecular Structure (2022), 133063, database is CAplus.

New quaternary ammonium bis-cationic surfactant namely; 4,4′-(((1Z,5Z)-pentane-1,5-diylidene)bis(azaneylylidene))bis(1-dodecyl-1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-1-ium bromide) (QABCS) was synthesized and characterized via various spectral techniques. Surface tension measurements were performed for the investigation of surface-active parameters. QABCS’s effectiveness as a corrosion inhibitor for carbon steel (CS) in 1.0 M HCl was evaluated using a variety of techniques. Inhibition potency progresses via rising QABCS dose while decreases with the temperature increasing. QABCS boosts the impedance of CS corrosion via 94.67% at 1 × 10^-3 M. In addition, QABCS adsorption is consistent with Langmuir dsorption isotherm model. QABCS regards a mixed-type inhibitor. The explanation of d.-functional theory (DFT) and Monte Carlo (MC) findings shows that the QABCS compound has a high adsorption potential on CS surface due to active centers in the QABCS’ mol. structure. According to the scanning electron microscope (SEM) and at. force microscope (AFM) findings, QABCS creates a shielding layer over carbon steel substrate. Theor. discussions, as well as SEM and AFM findings, are compatible with laboratory corrosion assessment studies.

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 C12H25Br, Application In Synthesis of 143-15-7.

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

Bielecki, Mia published the artcileA fluorescent glucose sensor binding covalently to all five hydroxy groups of α-D-glucofuranose. A reinvestigation, Synthetic Route of 166821-88-1, the publication is Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1999), 449-456, database is CAplus.

The structures of the complexes between a fluorescent bisboronic acid 7 and glucose have been determined Shinkai et al.¹ previously studied the complex between 7 and glucose and they deduced a 1,2:4,6-α-D-glucopyranose bisboronate structure. We have shown that this structure is only valid as an initial complex formed under completely nonaqueous conditions. In the presence of water the pyranose complex rearranges rapidly into an α-D-glucofuranose-1,2:3,5,6-bisboronate in which all five free hydroxy groups of glucose are covalently bound by the sensor mol. A favorable B-N interaction around the 1,2-binding site and the effect of an o-ammoniomethyl group on the pK_a value of the second boronic acid group allow for the observed binding at neutral pH. The structure evaluations are based on ¹H and ¹³C NMR data as well as information obtained from ¹J_CC coupling constants The fluorescence spectra of both complexes were measured and discussed. MALDI TOF-MS experiments showed competitive formation of 1:2 (boronic acid:glucose) complexes under conditions of physiol. glucose levels.

Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry 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 C12H16BBrO2, Synthetic Route of 166821-88-1.

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

Rudler, H. published the artcileTungsten(0) alkylidene complexes stabilized as pyridinium ylides: new aspects of their synthesis and reactivity, Recommanded Product: (2-Bromoethyl)cyclopentane, the publication is Journal of Organometallic Chemistry (2001), 571-587, database is CAplus.

The interaction of dihydropyridines with alkoxycarbene complexes of tungsten has been shown to lead to pyridinium ylide complexes: this transformation has now been applied to the synthesis of a hydroxyl-containing ylide complex by ring-opening of the pentacarbonyl (2-oxacyclopentylidene)tungsten(0) complex and to the synthesis of a series of chiral ylide complexes both from chiral and non-chiral carbene complexes by the use of dihydropyridines and dihydronicotines, resp. The transfer of the alkylidene moiety of these complexes to nucleophilic olefins will be outlined and discussed. Especially relevant is the interaction of these pyridinium ylide complexes with unsaturated substrates such as dihydropyridines, enamines, and β-alkoxy bis(trimethylsilyl) ketene acetals. This latter reaction leads to conjugated carboxylic acids, and has been be applied to a new synthesis of a honey bee pheromone, the queen substance.

Journal of Organometallic Chemistry published new progress about 18928-94-4. 18928-94-4 belongs to bromides-buliding-blocks, auxiliary class Bromide,Aliphatic cyclic hydrocarbon, name is (2-Bromoethyl)cyclopentane, and the molecular formula is C7H13Br, Recommanded Product: (2-Bromoethyl)cyclopentane.

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

Azizov, Ilgar published the artcileStudying droplet retention in porous media by novel microfluidic methods, Synthetic Route of 143-15-7, the publication is Chemical Engineering Science (2022), 248(Part_A), 117152, database is CAplus.

Transport of oil drops through porous media is an important topic in the oil and gas industry. Oil drops that are present in produced water contribute to injectivity decline during re-injection due to retention in pores. In the literature, the retention phenomenon is typically studied by means of core/packed bed flooding, which struggles to provide a simple and inexpensive way to visualize retention events at the pore scale. This paper demonstrates a microfluidic method for studying the transport of dilute oil-in-water emulsions through porous media. The method allows identification of every single retention event at the capillary level and quant. anal. of the spatial distribution of the retained drops over pore volumes injected. Experiments were carried out for monodisperse and tailored polydisperse emulsions. Moreover, several drop sizes, flow rates, and dispersed phase concentrations were tested. The results showed that the drop size has a dramatic effect on the pore clogging. Drops that are larger than pore throats underwent complete retention, while drops that are smaller than pore throats showed little to no retention in the monodisperse emulsion experiments Addnl., the experiments with polydisperse emulsions showed that the larger drops are facilitators for the retention of the smaller drops, and the latter are unlikely to experience significant retention independently of the former. The flow rates affected flow re-entry mechanisms of the larger drops, while for the smaller drops it affected only the number of retention events. It was identified that dispersed phase concentration has a significant effect in experiments with limited pore volumes injected. At low concentration, the obtained statistical sample was not sufficiently large to unravel the trends. The developed method presents a solid foundation for further experiments and developments in microfluidic studies of the emulsion transport.

Chemical Engineering Science 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, Synthetic Route of 143-15-7.

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

Wang, Jixin published the artcileSalt-Stabilized Silylzinc Pivalates for Nickel-Catalyzed Carbosilylation of Alkenes, Product Details of C7H5Br2F, the publication is Angewandte Chemie, International Edition (2022), 61(17), e202202379, database is CAplus and MEDLINE.

The authors herein report the preparation of solid and salt-stabilized silylzinc pivalates from the corresponding silyllithium reagents via transmetalation with Zn(OPiv)₂. These resulting organosilylzinc pivalates show enhanced air and moisture stability and unique reactivity in the silylative difunctionalization of alkenes. Thus, a practical chelation-assisted Ni-catalyzed regioselective alkyl and benzylsilylation of alkenes was developed, which provides an easy method to access alkyl silanes with broad substrate scope and wide functional group compatibility. Kinetic experiments highlight that the OPiv-coordination is crucial to improve the reactivity of silylzinc pivalates. Also, late-stage functionalizations of druglike mols. and versatile modifications of the products illustrate the synthetical utility of this protocol.

Angewandte Chemie, International Edition 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 C12H16N2O2, Product Details of C7H5Br2F.

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

Li, Yang published the artcileInfluence of polymer on oil displacement efficiency of petroleum sulfonates system, Safety of Dimidium bromide, the publication is Xinan Shiyou Daxue Xuebao, Ziran Kexueban (2009), 31(5), 135-138, database is CAplus.

The effect of polymer, such as partially hydrolyzed polyacrylamide, on the dynamic and equilibrium interfacial tension of petroleum sulfonates and oil/water systems is examined It is testified that polymer added in a certain concentration scope in the system only prolongs the time which the system needs to reach at the equilibrium interfacial tension, but the ability of the system for washing oil is not influenced. The simulation test by changing the injection sequence or injection mode of polymer and petroleum sulfonate indicates that the maximum oil displacement efficiency is acquired by the injection mode in which the petroleum sulfonate solution is injected after polymer flooding. The main reason is the decrease of adsorption site on the surface of rock for the adsorption of partially hydrolyzed polyacrylamide by hydrogen bond and the reduction of association body formed by polar group, so the loss of petroleum sulfonate in the core is decreased, as a result, the oil displacement efficiency of petroleum sulfonate for enhanced oil recovery is relatively increased.

Xinan Shiyou Daxue Xuebao, Ziran Kexueban 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, Safety of Dimidium bromide.

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

Li, Yang published the artcileEffect of Alkanolamide on Interfacial Tension and Loss of Petroleum Sulfonates for Enhanced Oil Recovery, Recommanded Product: Dimidium bromide, the publication is Journal of Dispersion Science and Technology (2010), 31(6), 722-726, database is CAplus.

Exptl. studies are conducted in order to elucidate the mechanisms of monoethanolamide responsible for synergism on lowering interfacial tension and decreasing loss due to adsorption on surface of reservoir sand and precipitation with multivalent cations in model oil/water/surfactants/brine systems. The interfacial tensions between solutions containing crude oil and monoethanolamide, petroleum sulfonates, or mixture of monoethanolamide and petroleum sulfonates at different ratios are studied without any alkali added in the solution The results show significant synergic effect between monoethanolamide and petroleum sulfonates can reduce the interfacial tension to ultralow. Adsorption isotherms of monoethanolamide, petroleum sulfonates and mixture solution are determined to assess the effect of monoethanolamide on reducing the loss of petroleum sulfonates in formation. Static adsorption experiments indicate that the loss of petroleum sulfonates for adsorption and precipitation can be reduced on a great degree when monoethanolamide is mixed with petroleum sulfonates. The core-flooding tests show that the enhanced oil recovery with the formulation of surfactants of 0.3 wt% petroleum sulfonates and 0.2 wt% monoethanolamide can be increased by 26.6% without any alkali added in the flooding solution

Journal of Dispersion Science and Technology 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, Recommanded Product: Dimidium bromide.

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