Category: 36428-96-3

Hara, Nobuyuki published the artcileSign dependence of MCPL spectra on type and position of substituent groups of pyrene and phenanthrene derivatives, SDS of cas: 36428-96-3, the main research area is pyrene phenanthrene derivative magnetic circularly polarised luminescence spectra.

Diamagnetic achiral pyrene and phenanthrene derivatives substituted with electron-donating hydroxyl/methoxy groups and electron-withdrawing carboxylic acid groups exhibited clear magnetic circularly polarised luminescence (MCPL) spectra at 360-460 nm in dilute solvents upon the application of N-up and S-up Faraday geometries under an external magnetic field of 1.6 T. Their MCPL signs were also susceptible upon application of the same Faraday geometry.

Physical Chemistry Chemical Physics published new progress about Luminescence (magnetic circularly polarised). 36428-96-3 belongs to class chlorides-buliding-blocks, name is Pyrene-2-carboxylic acid, and the molecular formula is C17H10O2, SDS of cas: 36428-96-3.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Dey, Aniruddha published the artcileNickel-catalyzed deamidative step-down reduction of amides to aromatic hydrocarbons, Quality Control of 36428-96-3, the main research area is reduction diamidation aromatic amide hydrocarbon preparation nickel catalyst; aryl pyrazolyl azaindolyl ketone amide reduction tetramethyldisiloxane nickel catalyst; crystal structure ethyldiphenylphosphine dicarbonyl pyrazolyl naphthalenecarboxylate nickel complex; mol structure ethyldiphenylphosphine dicarbonyl pyrazolyl naphthalenecarboxylate nickel complex.

To date, cleavage of the C-N bond in aromatic amides has been achieved in mols. with a distorted constitutional framework around the nitrogen atom. In this report, a nickel-catalyzed reduction of planar aromatic amides to the corresponding lower aromatic hydrocarbon homolog has been reported. Tetramethyldisiloxane reduction of aromatic amides ArCOPz, ArCOAInd (Pz = 1-pyrazolyl, AInd = 7-aza-1-indolyl), catalyzed by Ni(cod)2/EtPPh2 gave the corresponding hydrocarbons ArH (Ar = 1-naphthyl, 2-naphthyl, 9-anthracenyl, 2-pyrenyl) with high yields. This involves a one-pot reductive cleavage of the C-N bond followed by a tandem C-CO bond break in the presence of a hydride source. Substrate scope circumscribes deamidation examples which proceed via oxidative addition of nickel in the amide bonds of nontwisted amides. Mechanistic studies involving isolation and characterization of involved intermediates via different spectroscopic techniques reveal a deeper introspection into the plausible catalytic cycle for the methodol.

ACS Catalysis published new progress about Aromatic amides Role: RCT (Reactant), RACT (Reactant or Reagent). 36428-96-3 belongs to class chlorides-buliding-blocks, name is Pyrene-2-carboxylic acid, and the molecular formula is C17H10O2, Quality Control of 36428-96-3.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Glatt, Hansruedi published the artcileDetoxification of promutagenic aldehydes derived from methylpyrenes by human aldehyde dehydrogenases ALDH2 and ALDH3A1, Application of Pyrene-2-carboxylic acid, the main research area is detoxification promutagen pyrene aldehyde human dehydrogenase.

Methylated polycyclic aromatic hydrocarbons can be metabolically activated via benzylic hydroxylation and sulfo conjugation to reactive esters, which can induce mutations and tumors. Yet, further oxidation of the alc. may compete with this toxification. We previously demonstrated that several human alc. dehydrogenases (ADH1C, 2, 3 and 4) oxidize various benzylic alcs. (derived from alkylated pyrenes) to their aldehydes with high catalytic efficiency. However, all these ADHs also catalyzed the reverse reaction, the reduction of the aldehydes to the alcs., with comparable or higher efficiency. Thus, final detoxification requires elimination of the aldehydes by further biotransformation. We have expressed two human aldehyde dehydrogenases (ALDH2 and 3A1) in bacteria. All pyrene aldehydes studied (1-, 2- and 4-formylpyrene, 1-formyl-6-methylpyrene and 1-formyl-8-methylpyrene) were high-affinity substrates for ALDH2 (K m = 0.027-0.9 μM) as well as ALDH3A1 (K m = 0.78-11 μM). Catalytic efficiencies (k cat/K m) were higher for ALDH2 than ALDH3A1 by a moderate to a very large margin depending on the substrate. Most important, they were also substantially higher than the catalytic efficiencies of the various ADHs for the reduction the aldehydes to the alcs. These kinetic properties ensure that ALDHs, and particularly ALDH2, can complete the ADH-mediated detoxification.

Archives of Biochemistry and Biophysics published new progress about Aldehydes Role: BSU (Biological Study, Unclassified), BIOL (Biological Study). 36428-96-3 belongs to class chlorides-buliding-blocks, name is Pyrene-2-carboxylic acid, and the molecular formula is C17H10O2, Application of Pyrene-2-carboxylic acid.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Takaishi, Kazuto published the artcileChiral exciplex dyes showing circularly polarized luminescence: extension of the excimer chirality rule, Application In Synthesis of 36428-96-3, the main research area is chiral exciplex dye circularly polarized luminescence excimer chirality.

A series of axially chiral binaphthyls and quaternaphthyls possessing two kinds of aromatic fluorophores, such as pyrenyl, perylenyl, and 4-(dimethylamino)phenyl groups, arranged alternately were synthesized by a divergent method. In the excited state, the fluorophores selectively formed a unidirectionally twisted exciplex (excited heterodimer) by a cumulative steric effect and exhibited circularly polarized luminescence (CPL). They are the first examples of a monomol. exciplex CPL dye. This versatile method for producing exciplex CPL dyes also improved fluorescence intensity, and the CPL properties were not very sensitive to the solvent or to the temperature owing to the conformationally rigid exciplex. This systematic study allowed us to confirm that the excimer chirality rule can be applied to the exciplex dyes: left- and right-handed exciplexes with a twist angle of less than 90° exhibit (-)- and (+)-CPL, resp.

Chemical Science published new progress about Biaryls Role: PRP (Properties), SPN (Synthetic Preparation), PREP (Preparation). 36428-96-3 belongs to class chlorides-buliding-blocks, name is Pyrene-2-carboxylic acid, and the molecular formula is C17H10O2, Application In Synthesis of 36428-96-3.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Mooibroek, Tiddo J. published the artcileA threading receptor for polysaccharides, Safety of Pyrene-2-carboxylic acid, the main research area is receptor polysaccharide cellulose oligosaccharide monosaccharide preparation polypseudorotaxane chitosan.

Cellulose, chitin and related polysaccharides are key renewable sources of organic mols. and materials. However, poor solubility tends to hamper their exploitation. Synthetic receptors could aid dissolution provided they are capable of cooperative action, for example by multiple threading on a single polysaccharide mol. Here we report a synthetic receptor designed to form threaded complexes (polypseudorotaxanes) with these natural polymers. The receptor binds fragments of the polysaccharides in aqueous solution with high affinities (Ka up to 19,000 M-1), and is shown-by nuclear Overhauser effect spectroscopy-to adopt the threading geometry. Evidence from induced CD and at. force microscopy implies that the receptor also forms polypseudorotaxanes with cellulose and its polycationic analog chitosan. The results hold promise for polysaccharide solubilization under mild conditions, as well as for new approaches to the design of biol. active mols.

Nature Chemistry published new progress about Oligosaccharides Role: FMU (Formation, Unclassified), PRP (Properties), FORM (Formation, Nonpreparative). 36428-96-3 belongs to class chlorides-buliding-blocks, name is Pyrene-2-carboxylic acid, and the molecular formula is C17H10O2, Safety of Pyrene-2-carboxylic acid.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics