Category: bromides-buliding-blocks

Tanaka, Hiroki published the artcileHypoiodite-Catalyzed Oxidative Umpolung of Indoles for Enantioselective Dearomatization, Application In Synthesis of 111-83-1, the publication is Journal of the American Chemical Society (2022), 144(13), 5756-5761, database is CAplus and MEDLINE.

Reported the oxidative umpolung of 2,3-disubstituted indoles toward enantioselective dearomative aza-spirocyclization to give the corresponding spiroindolenines using chiral quaternary ammonium hypoiodite catalysis. Mechanistic studies revealed the umpolung reactivity of C3 of indoles by iodination of the indole nitrogen atom. Moreover, the introduction of pyrazole as an electron-withdrawing auxiliary group at C2 suppressed a competitive dissociative racemic pathway and enantioselective spirocyclization proceeded to give not only spiropyrrolidines but also four-membered spiroazetidines that were otherwise difficult to access.

Journal of the American Chemical Society 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 C15H16O3, Application In Synthesis of 111-83-1.

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

Oka, Hiroyuki published the artcileSynthesis and characterization of poly(1,3-phenylene)-based polyradicals carrying cyclic aminoxyls, SDS of cas: 111865-47-5, the publication is Journal of Materials Chemistry (2001), 11(5), 1364-1369, database is CAplus.

The synthesis and magnetic properties of poly(2,2,4,4-tetramethyl-N-yloxy-1,4-dihydro-2H-3,1-benzoxazine-6,8-diyl-1,3-phenylene) (4) are described. Polyradical 4 was prepared by the Pd-catalyzed cross-coupling reaction of 6,8-dibromo-2,2,4,4-tetramethyl-1,4-dihydro-2H-3,1-benzoxazine and bis(trimethylene) 1,3-phenylenediboronate, followed by oxidation with m-chloroperoxybenzoic acid. The number average mol. weights of 4 determined by SEC (size exclusion chromatog.) were ∼4120 (15 repeating units), and the spin concentrations determined by EPR were up to 0.75 spin per repeating unit. The EPR spectrum of 4 in a toluene glass matrix showed the ΔM_s = 2 forbidden transition at g = 4.0. A Curie plot of the ΔM_s = 2 signal intensity vs. 1/T gave a straight line, suggesting that the polyradical is in a triplet ground state or a nearly degenerate singlet-triplet state.

Journal of Materials Chemistry 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, SDS of cas: 111865-47-5.

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

Wu, Hanqing published the artcileNovel fluorescence liquid crystals with high circularly polarized luminescence based on cholesterol-decorated dicyanodistyrylbenzene, Formula: C12H25Br, the publication is Journal of Molecular Liquids (2022), 118663, database is CAplus.

The sym./asym. cholesterol- decorated dicyanodistyrylbenzene were prepared and the influence of sym./asym. structure on circularly polarized luminescence (CPL) properties was investigated for the first time. Both of them exhibited excellent fluorescence in solution and aggregated states. Their chiroptical properties were influenced greatly by the order degree of mol. stacking in different states. The sym. structure with two chiral units was favorable for better CPL emission than asym. structure with one chiral unit. The highest g_lum value was 1.5 x 10^-2 based on the effective chiral transfer and amplification of orderly liquid-crystalline mol. stacking of sym. cholesterol-decorated dicyanodistyrylbenzene in mesophase.

Journal of Molecular Liquids 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 C19H34ClN, Formula: C12H25Br.

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

Deng, Qinfei published the artcileSynthesis of 6-Fluoroalkyl 6H-Benzo[c]chromenes via Visible-Light-Promoted Radical Addition/Cyclization of Biaryl Vinyl Ethers, SDS of cas: 401-55-8, the publication is Journal of Organic Chemistry (2018), 83(11), 6151-6161, database is CAplus and MEDLINE.

A novel visible-light-promoted cascade cyclization reaction for the synthesis of 6-fluoroalkyl 6H-benzo[c]chromenes has been successfully realized, which was initiated by intermol. radical addition to biaryl vinyl ethers using easily available fluoroalkylated reagents BrCF₂CO₂Et or 2-bromo-2,2-difluoroamides as the sources of fluorinated radicals, followed by the cyclization onto an aromatic ring process. This protocol tolerated a wide range of functional groups and provided the desired products in moderate to good yields.

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 C4H6BrFO2, SDS of cas: 401-55-8.

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

Kamachi, Hiroaki published the artcileStructure-activity studies on the side chain of a simplified analog of aplysiatoxin (aplog-1) with anti-proliferative activity, Synthetic Route of 111865-47-5, the publication is Bioorganic & Medicinal Chemistry (2013), 21(10), 2695-2702, database is CAplus and MEDLINE.

We have recently developed a simplified analog of aplysiatoxin (aplog-1) as an activator of protein kinase C (PKC) with anti-proliferative activity like bryostatin 1. To identify sites in aplog-1 that could be readily modified to optimize therapeutic performance and to develop a mol. probe for examining the analog’s mode of action, substituent effects on the phenol ring were systematically examined Whereas hydrophilic acetamido derivatives were less active than aplog-1 in inhibiting cancer cell growth and binding to PKCδ, introduction of hydrophobic bromine and iodine atoms enhanced both biol. activities. The anti-proliferative activity was found to correlate closely with mol. hydrophobicity, and maximal activity was observed at a log P value of 4.0-4.5. An induction test with Epstein-Barr virus early antigen demonstrated that these derivatives have less tumor-promoting activity in vitro than aplog-1 regardless of the hydrophobicity of their substituents. These results would facilitate rapid preparation of mol. probes to examine the mechanism of the unique biol. activities of aplog-1.

Bioorganic & Medicinal Chemistry 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

Fujiki, Michiya published the artcileThermo-driven chiroptical switching polysilane featuring 2-cyclopentylethyl side group, Recommanded Product: (2-Bromoethyl)cyclopentane, the publication is Silicon Chemistry (2002), 1(1), 67-72, database is CAplus.

A new rod-like helical polysilane, poly{(S)-3,7-dimethyloctyl(2-cyclopentylethyl)silane}, was found to undergo a thermo-driven, helix-helix transition at -33°C in isooctane associated with the discontinuous changes in the Siσ-Siσ* transition energy and intensity in the transition temperature region. This is the first example of a helix-helix transition polysilane with a cycloalkyl group. A similar rod-like polysilane derivative, poly{(S)-3,7-dimethyloctyl(1-cyclopentylmethyl)silane}, however, did not undergo any helix-helix transition between -61 and 80°C.

Silicon 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

Schneider, Leon N. published the artcileStable and Storable N(CF₃)₂ Transfer Reagents, Formula: C7H5Br2F, the publication is Chemistry – A European Journal (2021), 27(42), 10973-10978, database is CAplus and MEDLINE.

Fluorinated groups are essential for drug design, agrochems., and materials science. The bis(trifluoromethyl)amino group is an example of a stable group that has a high potential. While the number of mols. containing perfluoroalkyl, perfluoroalkoxy, and other fluorinated groups is steadily increasing, examples with the N(CF₃)₂ group are rare. One reason is that transfer reagents are scarce and metal-based storable reagents are unknown. Herein, a set of Cu^I and Ag^I bis(trifluoromethyl)amido complexes stabilized by N- and P-donor ligands with unprecedented stability are presented. The complexes are stable solids that can even be manipulated in air for a short time. They are bis(trifluoromethyl)amination reagents as shown by nucleophilic substitution and Sandmeyer reactions. In addition to a series of benzylbis(trifluoromethyl)amines, 2-bis(trifluoromethyl)amino acetate was obtained, which, upon hydrolysis, gives the fluorinated amino acid-N,N-bis(trifluoromethyl)glycine.

Chemistry – A European Journal 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, Formula: C7H5Br2F.

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

Nobili, Alberto published the artcileSimultaneous Use of in Silico Design and a Correlated Mutation Network as a Tool To Efficiently Guide Enzyme Engineering, Recommanded Product: 3-Bromo-2-methylpropanoic acid, the publication is ChemBioChem (2015), 16(5), 805-810, database is CAplus and MEDLINE.

In order to improve the efficiency of directed evolution experiments, in silico multiple-substrate clustering was combined with an anal. of the variability of natural enzymes within a protein superfamily. This was applied to a Pseudomonas fluorescens esterase (PFE I) targeting the enantioselective hydrolysis of 3-phenylbutyric acid esters. Data reported in the literature for nine substrates were used for the clustering meta-anal. of the docking conformations in wild-type PFE I, and this highlighted a tryptophan residue (W28) as an interesting target. Exploration of the most frequently, naturally occurring amino acids at this position suggested that the reduced flexibility observed in the case of the W28F variant leads to enhancement of the enantioselectivity. This mutant was subsequently combined with mutations identified in a library based on anal. of a correlated mutation network. By interrogation of <80 variants, a mutant with 15-fold improved enantioselectivity was found.

ChemBioChem published new progress about 56970-78-6. 56970-78-6 belongs to bromides-buliding-blocks, auxiliary class Bromide,Carboxylic acid,Aliphatic hydrocarbon chain,Inhibitor, name is 3-Bromo-2-methylpropanoic acid, and the molecular formula is C4H7BrO2, Recommanded Product: 3-Bromo-2-methylpropanoic acid.

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

Esmer, Elif Nazli published the artcileNear infrared electrochromic polymers based on phenazine moieties, Related Products of bromides-buliding-blocks, the publication is Materials Chemistry and Physics (2011), 131(1-2), 519-524, database is CAplus.

New fused-aromatic quinoxaline and thieno[3,4-b]pyrazine based monomers; 10,12-bis(4-hexylthiophen-2-yl)dibenzo[f,h]thieno[3,4-b]quinoxaline (HTBQ) and 10,13-bis(4-hexylthiophen-2-yl)dipyrido[3,2-a:2′,3′-c]phenazine (HTPP) were synthesized. Electrochem. polymerization of HTBQ and HTPP were performed in acetonitrile/dichloromethane (ACN/DCM) solution containing LiClO₄/NaClO₄. Spectroelectrochem. behavior and switching ability of PHTBQ and PHTPP films were investigated by UV-vis spectroscopy. The polymer films showed reversible electrochem. oxidation with high contrast ratios in the NIR region with low switching times. PHTBQ revealed color changes between brick color and green in the reduced and oxidized states. PHTPP changed color from green to gray when the polymer film was switched between its redox states.

Materials Chemistry and Physics 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, Related Products of bromides-buliding-blocks.

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

Kolay, Merve published the artcileSynthesis and optical properties of fused aromatic thienopyrazine based π-conjugated polymers, Application In Synthesis of 52431-30-8, the publication is Smart Materials and Structures (2011), 20(7), 075013/1-075013/6, database is CAplus.

Two new polythieno[3,4-b]pyrazine derivatives, poly-10,12-bis(4-hexylthiophen-2-yl)dibenzo[f,h] thieno[3,4-b]quinoxaline (PDBTQ) and poly-8,10-bis(4-hexylthiophen-2-yl)acenaphtho[1,2-b]thieno[3,4-e]pyrazine (PATP) were synthesized by electrochem. polymerization and their electrochem. properties reported. Electroactivity of the monomer and electrochem. redox behavior of its polymers were investigated by cyclic voltammetry. Spectroelectrochem. anal. was performed and the band gaps of the polymers were determined as 2.0 eV and 1.2 eV from the onset of the π-π* transitions of PDBTQ and PATP, resp. The polymer PDBTQ shows multicolored electrochromic behavior with five distinct states-orange (0.0 V), yellow (+0.30 V), brown (+0.50 V), green (+0.65 V), blue-gray (0.80 V); PATP has two distinct colors-transmissive gray (0.0 V) and green (+0.80 V). The polymers revealed superior optical contrast in the near-IR (NIR) region with fast switching times of less than 1 s.

Smart Materials and Structures 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, Application In Synthesis of 52431-30-8.

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