Author: Jessica.F

Tanner, Dennis D. published the artcileReexamination of the reaction of a “graded set” of radicals with N-bromosuccinimide: a kinetic argument concerning the π, and ω states of succinimidyl, Product Details of C6H12Br2, the publication is Journal of the American Chemical Society (1985), 107(23), 6584-9, database is CAplus.

The NBS [N-bromosuccinimide] of CH₂Cl₂ with added substrates which yield stable radicals was reinvestigated. The proposal that these substrates would affect the ratio of BrCH₂CH₂CONCO (BPI)/CHCl₂Br, the solvent bromination product, was not substantiated. Bromination of Me₂CHCHMe₂, cyclohexene, and butadiene by NBS in CH₂Cl₂ plus H₂C:CCl₂ gives essentially the same BPI/CHCl₂Br ratios as in the presence of neopentane but large yields of brominated and polybrominated products. Similar reactions in the presence of up to 2.5 M C₆H₆ always yield BPI but also highly brominated benzene derivatives BPI is detected in the NBS bromination of CHCl₃ under all conditions and is the major product in the presence of H₂C:CCl₂ chloride. Photolysis of N-iodosuccinimide-I₂ in CHCl₃ gives ICH₂CH₂CONCO as the chief product. None of these observations support the hypothesis of σ and π states of the succinimidyl radical (S·), while the NBS results appear consistent with competing S·-Br· chains.

Journal of the American Chemical Society 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 C12H16N2O2, Product Details of C6H12Br2.

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

Wang, Yipu published the artcileVisualizing Aβ deposits in live young AD model mice with a simple red/near-infrared-fluorescent AIEgen, Category: bromides-buliding-blocks, the publication is Science China: Chemistry (2022), 65(2), 339-352, database is CAplus.

Precise and early detection of β-amyloid (Aβ) deposits in situ and in real time is pivotal to the diagnosis and early intervention of Alzheimer’s disease (AD). Optical imaging stands out to be a promising technique for such a task; however, it still remains a big challenge, due to the lack of high-performance imaging contrast agent. Restricted by poor blood-brain barrier (BBB) penetrability, short-wavelength excitation and emission, as well as the aggregation-caused quenching effect, the widely used gold-standard probes cannot be used for early in-vivo imaging of Aβ deposits. Herein, we integrate the Aβ deposits-favored geometry, amphiphilic and zwitterionic mol. structure, extended D-π-A electronic structure, and 3D conformation into one mol., facilely establishing a simple and economic imaging contrast agent that enjoys high specificity and affinity to Aβ deposits, good BBB penetrability, bright red/near-IR fluorescence, low interference from autofluorescence, aggregation-induced emission (AIE) feature, high signal-to-noise ratio (SNR), and high contrast. In-vitro, ex-vivo, and in-vivo experiments with different strains of mice indicate that AIE-CNPy-AD holds the universality to Aβ deposits identification. Noteworthily, AIE-CNPy-AD is even able to precisely trace the small and sparsely-distributed Aβ deposits in AD model mice as young as 4-mo-old APP/PS1 mice, the youngest having Aβ deposits. Moreover, the present probe could clearly reveal the increase and enlargement of Aβ deposits as the mice grow. Therefore, AIE-CNPy-AD might be an ideal alternative for early AD diagnosis and highly reliable monitoring of AD progression.

Science China: Chemistry published new progress about 55788-44-8. 55788-44-8 belongs to bromides-buliding-blocks, auxiliary class Bromide,Salt,Aliphatic hydrocarbon chain,Aliphatic hydrocarbon chain, name is Sodium 3-bromopropane-1-sulfonate, and the molecular formula is C15H12O6, Category: bromides-buliding-blocks.

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

Noorani, Narmin published the artcileCarbon dioxide adsorption onto modified polyvinyl chloride with ionic liquid, Category: bromides-buliding-blocks, the publication is Journal of Polymer Engineering (2022), 42(6), 498-506, database is CAplus.

To modify polyvinylchloride membranes for carbon dioxide gas separation, six polyvinyl chloride-g-polyionic liquid ionomers such as polyvinylchloride-g-poly1-vinyl-3-hexylimidazolium bromide (PVC-g-P[VHIm][Br]), polyvinylchloride-g-poly1-vinyl-3-hexylimidazolium thiocyanate (PVC-g-P[VHIm][SCN]), polyvinylchloride-g-poly1-vinyl-3-hexylimidazolium tetrafluoroborate (PVC-g-P[VHIm][BF₄]), polyvinylchloride-g-poly1-vinyl-3-octylimidazolium bromide (PVC-g-P[VOIm][Br]), polyvinylchloride-g-poly1-vinyl-3-octylimidazolium thiocyanate (PVC-g-P[VOIm][SCN]) and polyvinylchloride-g-poly1-vinyl-3-octylimidazolium tetrafluoroborate (PVC-g-P[VOIm][BF₄]) were synthesized. The polyvinyl chloride-g-polyionic liquid ionomers were characterized using elemental analyzer (CHN) and Fourier transform IR spectroscopy (FTIR) techniques. CO₂ adsorption onto these ionomers was measured by quartz crystal microbalance (QCM) and the exptl. data were correlated by the sorption model. The parameters obtained imply that CO₂ adsorption has an exothermic and physisorption nature. Also, the investigations point to that the PVC-g-P[VHIm][SCN] has better performance for CO₂ separation

Journal of Polymer Engineering 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

Miller, John C. published the artcileHeavy atom effects on the triplet lifetimes of naphthalene and phenanthrene, Synthetic Route of 52358-73-3, the publication is Journal of the American Chemical Society (1977), 99(25), 8175-9, database is CAplus.

Heavy-atom effects on triplet decay rates are reported for the 8 monohalonaphthalenes and for 11 monohalophenanthrenes. The decrease in the lifetime with substitution varies with the square of the at. spin-orbit coupling factor for the attached halogen. The position dependence is qual. related to the unpaired spin-d. distribution in the mol. Investigation of the lifetimes of 13 polyhalogenated naphthalenes and phenanthrenes indicate both pos. and neg. deviations from an additive model for heavy-atom effects. Substituent-induced shifts of the O-O band of the phosphorescence spectra are also tabulated.

Journal of the American Chemical Society published new progress about 52358-73-3. 52358-73-3 belongs to bromides-buliding-blocks, auxiliary class Bromide,Naphthalene, name is 1,3-Dibromonaphthalene, and the molecular formula is C10H6Br2, Synthetic Route of 52358-73-3.

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

Labanauskas, Linas published the artcileSynthesis of 1-substituted 4-[4-(1H-indol-3-yl)butyl]piperazines, Safety of 2-Bromoethyl Methyl Sulfone, the publication is ARKIVOC (Gainesville, FL, United States) (2013), 363-376, 14 pp., database is CAplus.

A convenient synthetic route for preparation of various 4-[4-(1H-indol-3-yl)butyl]piperazines bearing heterocyclic and aliphatic substituents in position 1 has been developed. During this work, some synthetic possibilities of the common precursor, 4-[4-(1H-indol-3-yl)butyl]piperazine, were studied and evaluated.

ARKIVOC (Gainesville, FL, United States) 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 C3H7BrO2S, Safety of 2-Bromoethyl Methyl Sulfone.

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

Uslu, Azize Gizem published the artcileBenzimidazole derivatives as potent and isoform selective tumor-associated carbonic anhydrase IX/XII inhibitors, Recommanded Product: 4-Bromo-N-methyl-2-nitroaniline, the publication is Bioorganic Chemistry (2020), 103544, database is CAplus and MEDLINE.

We describe the synthesis of a series of 2-arylbenzimidazole derivatives bearing sulfonamide functionality (4a-d, 7a-c and 10) as well as hydroxamic acid (15a-b), carboxylic acid (16a-b), carboxamide (17a-b) and boronic acid (22a-b and 26) functionalities, which act as human carbonic anhydrase (hCA, EC 4.2.1.1) inhibitors. The newly synthesized benzimidazole derivatives were evaluated against 4 physiol. relevant CA isoforms (hCA I, II, IX, and XII), and especially the sulfonamide-containing benzimidazoles demonstrated intriguing inhibitory activity against tumor associated CA IX and XII with K_I values in the range of 5.2-29.3 nM and 9.9-41.7 nM, resp. Notably, compound 4c was the most potent and selective CA IX (K_I = 6.6 nM) and XII (K_I = 9.9 nM) inhibitor with a significant selectivity ratio over cytosolic CA I and II isoforms in the range of 3.4-25.2. In addition, compounds having hydroxamic acid (15a-b) or carboxylic acid (16a-b) functionalities resulted in greater selectivity ratios for CA IX/XII over CAI/II in the range of 4.1-121.5 although with K_I values in lower micromolar potency (K_Is = 0.36-0.85μM for CA IX/XII).

Bioorganic Chemistry published new progress about 53484-26-7. 53484-26-7 belongs to bromides-buliding-blocks, auxiliary class Bromide,Nitro Compound,Amine,Benzene, name is 4-Bromo-N-methyl-2-nitroaniline, and the molecular formula is C7H6Cl2, Recommanded Product: 4-Bromo-N-methyl-2-nitroaniline.

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

Mathey, Francois published the artcilePyrolysis of some phosphorus trihalide-diene addition compounds, Recommanded Product: 2,3-Dibromo-2,3-dimethylbutane, the publication is Comptes Rendus des Seances de l’Academie des Sciences, Serie C: Sciences Chimiques (1969), 268(21), 1902-4, database is CAplus.

Pyrolysis of H2C:-CMeCMe:CH2.PBr3, H2C:CMeCMe:CH2.PCl3, and H2C:-CMeCH:CH2.PBr3 in vacuo at <200° gave, resp., PBr3 or PCl3 and Me2CBrCBrMe2, ClCH2CHMeCClMe2 or BrCH2CH2CBrMe2 together with polymeric residues. The products were identified by their N.M.R. spectra, which are discussed.

Comptes Rendus des Seances de l’Academie des Sciences, Serie C: Sciences Chimiques 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, Recommanded Product: 2,3-Dibromo-2,3-dimethylbutane.

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

Bauer, Adriano published the artcileChemoselective formal β-functionalization of substituted aliphatic amides enabled by a facile stereoselective oxidation event, Safety of 7-Bromohept-1-yne, the publication is Chemical Science (2019), 10(42), 9836-9840, database is CAplus and MEDLINE.

A facile and stereoselective dehydrogenation event enabling the functionalization of aliphatic amides, e.g., 1-(indolin-1-yl)-2-methylpropan-1-one at different positions in a one-pot fashion has been described. Derivatives of relevant pharmaceuticals were formally functionalized in the β-position in late-stage manner. A single-step synthesis of incrustoporine from a simple precursor further showcases the potential utility of this approach.

Chemical Science published new progress about 81216-14-0. 81216-14-0 belongs to bromides-buliding-blocks, auxiliary class Linker,PROTAC Linker, name is 7-Bromohept-1-yne, and the molecular formula is C7H11Br, Safety of 7-Bromohept-1-yne.

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

Camp, David published the artcileDevelopment of a Synthetic Process towards a Hepatitis C Polymerase Inhibitor, SDS of cas: 76283-09-5, the publication is Organic Process Research & Development (2006), 10(4), 814-821, database is CAplus.

The synthesis of clin. candidate 2-(4-{2-[(2R)-2-Cyclopentyl-5-(5,7-dimethyl-[1,2,4]triazolo[1,5-a]pyrimidin-2-ylmethyl)-4-hydroxy-6-oxo-3,6-dihydro-2H-pyran-2-yl]-ethyl}-2-fluoro-phenyl)-2-methyl-propionitrile (I) on multikilogram scale is described. Initial synthesis of I, clin. candidate for inhibition of the hepatitis C viral polymerase (HCVP) protein, was executed via a racemic synthetic route coupled with chiral HPLC separation Due to the achiral route and instability of key intermediates, the initial route was determined to be unsuitable for large-scale manufacture An alternate route was developed utilizing a convergent Heck coupling, resolution of a carboxylic acid via diastereomeric salt formation, and an efficient chem. recycling of the undesired enantiomer.

Organic Process Research & Development 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, SDS of cas: 76283-09-5.

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

Rinderhagen, Heiko published the artcileSynthetic applications in radical/radical cationic cascade reactions, COA of Formula: C7H13BrSi, the publication is Chemistry – A European Journal (2004), 10(4), 851-874, database is CAplus and MEDLINE.

Oxidative photoinduced electron transfer (PET) reactions have been performed with various cyclic cyclopropyl(vinyl) silyl ethers bearing an olefinic or acetylenic side chain. The reactions result in bi- to tetracyclic ring systems via a fragmentation-radical/radical cationic addition reaction pathway with well defined ring juncture. The mode of cyclization (endo/exo) can be partially controlled by addition of nucleophiles due to the suppression of radical cationic reaction pathways. Quantum chem. calculation of the cyclization transition states underline the exptl. found selectivities. Addnl. mechanistic studies concerning the saturation step reveal that the final radical is saturated mostly by the solvent and traces of water in the solvent.

Chemistry – A European Journal published new progress about 69361-41-7. 69361-41-7 belongs to bromides-buliding-blocks, auxiliary class PROTAC Linker,Aliphatic Linker, name is (4-Bromobut-1-yn-1-yl)trimethylsilane, and the molecular formula is C7H13BrSi, COA of Formula: C7H13BrSi.

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