Category: bromides-buliding-blocks

Tlach, Brian C. published the artcileEffect of Extended Conjugation on the Optoelectronic Properties of Benzo[1,2-d:4,5-d’]bisoxazole Polymers, SDS of cas: 303734-52-3, the publication is Australian Journal of Chemistry (2014), 67(5), 711-721, database is CAplus.

Four copolymers comprising benzo[1,2-d:4,5-d’]bisoxazole (BBO) and benzo[1,2-b:4,5-b’]dithiophene (BDT) bearing phenylethynyl substituents on either the BBO, BDT moieties or both units were synthesized and the influence of two-dimensional conjugation on their optoelectronic properties investigated. Extending conjugation along the BBO resulted in a 0.5eV decrease in the LUMO level, whereas the HOMO level was raised by 0.2eV. Extending conjugation across the BDT moiety in also resulted in a 0.5eV decrease in the LUMO level, however, the effect was negligible on the HOMO level. Thus, cross-conjugation can be used to independently tune the LUMO level within these systems.

Australian Journal of 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 C5H10Cl3O3P, SDS of cas: 303734-52-3.

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

Katz, Thomas J. published the artcileSynthesis and properties of optically active helical metallocene oligomers, COA of Formula: C4H10Br2CoO2, the publication is Journal of the American Chemical Society (1993), 115(8), 3182-98, database is CAplus.

Syntheses are described for optically active oligomers, of I (R = H, SiMe₃) and CO⁺PF₆^–. The steps required have three essential features: (1) a bromine directs a photocyclization, blocking both the position it occupies and the one adjacent. (2) An acid scavenger (propylene oxide) prevents benzylic ethers from being eliminated during photocyclization. (3) The stereogenicity of one carbon controls the direction in which the helix winds. The oligomers are the first to be prepared in which metallocenes are joined by conjugated systems of double bonds. Their optical activity is very high. The cyclic voltammogram of the Co-containing oligomer of I (R = H) (II) shows two cathodic waves whose closeness implies that the interaction between adjacent units is weak. When II is reduced electrochem. on Pt, a film of neutral oligomers is produced. This film is conductive, and it catalyzes charge transfer. Its weight, measured using a quartz crystal microbalance after the amount of reduction was analyzed coulometrically, measured the mol. weight of II.

Journal of the American Chemical Society published new progress about 18346-57-1. 18346-57-1 belongs to bromides-buliding-blocks, auxiliary class Cobalt, name is Cobalt(II) dibromo(1,2-dimethoxyethane), and the molecular formula is C4H10Br2CoO2, COA of Formula: C4H10Br2CoO2.

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

Kakinami, Takaaki published the artcileHalogenation using quaternary ammonium polyhalides. XX. Bromination of phenols with polymer-bound benzyltrimethylammonium tribromide, Synthetic Route of 111865-47-5, the publication is Bulletin of the Chemical Society of Japan (1989), 62(10), 3373-5, database is CAplus.

Bromo-substituted phenols were obtained quant. by passing a solution of phenols in dichloromethane-methanol through a column packed with styrene polymer-bound benzyltrimethylammonium tribromide. Yields were 91-99%.

Bulletin of the Chemical Society of Japan 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, Synthetic Route of 111865-47-5.

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

Reichenbaecher, Katharina published the artcileModification of channel structures by fluorination, HPLC of Formula: 1998-61-4, the publication is New Journal of Chemistry (2004), 28(3), 393-397, database is CAplus.

Two perfluorinated triazines [2,4,6-tris(p-bromotetrafluorophenoxy)-1,3,5-triazine (2) and 2,4,6-tris(pentafluorophenoxy)-1,3,5-triazine (3)] were synthesized to study their crystal structure and inclusion character. Compound 3 forms channel inclusions with the solvents p-xylene and p-chlorotoluene, showing a stoichiometry of 2:1 (host:guest). The channels have dimensions of 7.6 × 3 Ų. The host-guest interactions, perfluorophenyl-Ph stacking, F···H- and CH···π(perfluorophenyl) contacts, were revealed by the crystallog. and solid state NMR spectroscopy studies. The reversibility of the sorption process through the gas phase could be demonstrated by X-ray diffraction. In contrast to the pentafluorinated compound 3, the tetrafluorinated one (2) showed no inclusions with a number of typical solvents.

New Journal of Chemistry published new progress about 1998-61-4. 1998-61-4 belongs to bromides-buliding-blocks, auxiliary class Fluoride,Bromide,Benzene,Phenol, name is 4-Bromo-2,3,5,6-tetrafluorophenol, and the molecular formula is C6HBrF4O, HPLC of Formula: 1998-61-4.

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

Uno, Misae published the artcileSynthesis of 4,4-Difluoroalkenes by Coupling of α-Substituted α,α-Difluoromethyl Halides with Allyl Sulfones under Photoredox Catalyzed Conditions, Computed Properties of 401-55-8, the publication is Journal of Organic Chemistry (2019), 84(14), 9330-9338, database is CAplus and MEDLINE.

Photoredox-catalyzed allylation of α-gem-difluorinated organohalides with allyl sulfones proceeded smoothly under visible light irradiation to give 4,4-difluoroalkenes in good yields. In the presence of catalytic Ru(bpy)₃Cl₂, Hantzsch ester, and diisopropylethylamine, the reaction was complete within 2 h. Using the same methodol., three-component cascade reactions to give 6,6-difluoroalkenes were carried out successfully.

Journal of Organic Chemistry 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 C19H14Cl2, Computed Properties of 401-55-8.

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

Milne, Kirsty published the artcileA fragment-like approach to PYCR1 inhibition, Related Products of bromides-buliding-blocks, the publication is Bioorganic & Medicinal Chemistry Letters (2019), 29(18), 2626-2631, database is CAplus and MEDLINE.

Pyrroline-5-carboxylate reductase 1 (PYCR1) is the final enzyme involved in the biosynthesis of proline and has been found to be upregulated in various forms of cancer. Due to the role of proline in maintaining the redox balance of cells and preventing apoptosis, PYCR1 is emerging as an attractive oncol. target. Previous PYCR1 knockout studies led to a reduction in tumor growth. Accordingly, a small mol. inhibitor of PYCR1 could lead to new treatments for cancer, and a focused screening effort identified pargyline as a fragment-like hit. Herein the design and synthesis of the first tool compounds as PYCR1 inhibitors, derived from pargyline, which were assayed to assess their ability to attenuate the production of proline, are reported. Structural activity studies have revealed the key determinants of activity, with the most potent compound, 4-bromobenzyl(propargyl)methylamine, showing improved activity in vitro in enzyme (IC₅₀ = 8.8μM) and pathway relevant effects in cell-based assays.

Bioorganic & Medicinal Chemistry Letters 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, Related Products of bromides-buliding-blocks.

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

Xiang, Panjie published the artcileDirect benzylation reactions from benzyl halides enabled by transition-metal-free photocatalysis, SDS of cas: 76283-09-5, the publication is Chinese Chemical Letters (2022), 33(12), 5074-5079, database is CAplus.

An SN²-based photochem. strategy using dithiocarbamate anion as catalyst was developed for the activation of benzyl halides, which are extremely challenging to be applied as radical precursors in visible light photocatalysis. With this transition-metal-free and oxidant-free protocol, the benzylation (or cyanomethylation) of various heterocycles including quinoxalin-2(1H)-ones, coumarin, 2-phenyl-2H-indazole, 1-methyl-5-phenylpyrazin-2(1H)-one, 1-(fluoromethyl)cinnolin-4(1H)-one, and 2,4-dibenzyl-1,2,4-triazine-3,5(2H,4H)-dione could be realized (46 examples, up to 98% yield). Importantly, some biol. relevant 3-benzylquinoxalin-2(1H)-ones were also be synthesized under mild conditions.

Chinese Chemical Letters 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 C13H18N2, SDS of cas: 76283-09-5.

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

Obreque-Balboa, Jose Esteban published the artcileFlavonoid derivatives as selective ABCC1 modulators: Synthesis and functional characterization, HPLC of Formula: 21101-63-3, the publication is European Journal of Medicinal Chemistry (2016), 124-133, database is CAplus and MEDLINE.

A series of chromones, bearing substituted amino groups or N-substituted carboxamide moieties in position 2, was synthesized and characterized in cellular assays for modulation of the ABC transporters ABCC1 (MDCKII-MRP1 cells), ABCB1 (Kb-V1 cells) and ABCG2 (MCF-7/Topo cells). The most potent ABCC1 modulators identified among these flavonoid-type compounds were comparable to the reference compound reversan regarding potency, but superior in terms of selectivity concerning ABCB1 and ABCG2 (2-[4-(Benzo[c][1,2,5]oxadiazol-5-ylmethyl)piperazin-1-yl]-5,7-dimethoxy-4H-chromen-4-one: ABCC1, IC₅₀ 11.3 μM; inactive at ABCB1 and ABCG2). This compound was as effective as reversan in reverting ABCC1-mediated resistance to cytostatics in MDCKII-MRP1 cells and proved to be stable in mouse plasma and cell culture medium. Modulators, such 2-[4-(Benzo[c][1,2,5]oxadiazol-5-ylmethyl)piperazin-1-yl]-5,7-dimethoxy-4H-chromen-4-one, were of potential value as pharmacol. tools for the investigation of the (patho)physiol. role of ABCC1.

European Journal of Medicinal Chemistry published new progress about 21101-63-3. 21101-63-3 belongs to bromides-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Bromide,sulfides,Benzyl bromide,Benzene, name is (4-(Bromomethyl)phenyl)(trifluoromethyl)sulfane, and the molecular formula is C8H6BrF3S, HPLC of Formula: 21101-63-3.

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

Zhang, Qian published the artcileSynthesis, Structures, and Properties of BN-Dinaphthothiophenes: Influence of B and N Placement on Photophysical Properties and Aromaticity, Category: bromides-buliding-blocks, the publication is Journal of Organic Chemistry (2020), 85(12), 7877-7883, database is CAplus and MEDLINE.

Substitution of the C=C functionality with the isosteric and isoelectronic B-N moiety has emerged as a powerful way to expand the family of polycyclic aromatic hydrocarbons. In this paper, two types of BN-dinaphthothiophene (BN-DNT) derivatives with different B and N substitution patterns were synthesized in short steps from com. available materials. X-ray crystallog. anal. revealed that BN-DNT had rigid and planar frameworks. Their photophys. properties and the aromaticity of the BN rings of the BN-DNTs were slightly dependent on the B and N substitution patterns. However, their response toward fluoride anions was greatly dependent on the B and N substitution patterns.

Journal of Organic Chemistry 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 C15H15OP, Category: bromides-buliding-blocks.

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

Sivakumar, Irla published the artcileRubicene, an Unusual Contorted Core for Discotic Liquid Crystals, Product Details of C12H25Br, the publication is Chemistry – An Asian Journal (2022), 17(8), e202200073, database is CAplus and MEDLINE.

Rubicene, an unusual contorted polycyclic aromatic hydrocarbon, was realized to function as a novel core fragment for discotic liquid crystals. The central π-conjugated motif was prepared from dialkoxyiodobenzene via Sonagashira coupling followed by pentannulation and Scholl cyclodehydrogenation. The synthesized rubicene derivatives were found to be thermally stable and exhibit enantiotropic columnar mesophases. The columnar arrangement of these derivatives has been validated using polarising optical microscopy, differential scanning calorimetry & small-angle X-ray scattering.

Chemistry – An Asian 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 C8H7ClO3, Product Details of C12H25Br.

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