Category: 39901-94-5

Product Details of 39901-94-5. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Picolinoyl chloride hydrochloride, is researched, Molecular C6H5Cl2NO, CAS is 39901-94-5, about Synthesis, structural and physicochemical properties of a series of manganese(II) complexes with a novel N5 tripodal-amidate ligand and their potential use as water oxidation catalysts. Author is Papanikolaou, Michael G.; Hadjithoma, Sofia; Gallos, John K.; Miras, Haralampos N.; Plakatouras, John C.; Keramidas, Anastasios D.; Kabanos, Themistoklis A..

Water oxidation plays a crucial role in both natural and artificial photosynthesis, which is an attractive solution to the depletion of fossil fuels as energy sources due to the increasing consumption. Thus, the search for oxygen evolution reaction catalysts is a hot topic of research. Reaction of the N5-tripodal amidate ligand, N-{2-[(bis(pyridine-2-ylmethyl)amino)methyl]phenyl}picolinamide (Htrip) with MIIX2 (X = Cl-, Br-, I-), in anhydrous Et alc., and C2H5ONa yields the complexes [MnII(trip)Cl] (1), [MnII(trip)Br] (2), and [MnII(trip)I] (3). Single crystal x-ray structure anal. of 1-3 revealed that the manganese(II) atom in the three manganese compounds occupies the center of a distorted octahedral coordination sphere consisting of two pyridine, one picoline and one amino nitrogen atoms on the equatorial plane, while the axial positions are occupied by one amido nitrogen atom and the halogen anion. The three manganese(II) complexes 1-3 constitute the first examples of mononuclear {MnII(N5trip)X} species to be reported. Magnetic susceptibility measurements showed that these complexes are high-spin d5 systems. Cyclic voltametric study of 1-3 revealed an unexpected two electron, electrochem. reversible redox process, assigned to the oxidation of MnII to MnIV. The electrochem. properties for oxygen evolution reaction of complexes 1-3 showed that the oxidized trip- ligand is responsible for the electrocatalytic oxidation of water to dioxygen.

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Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: Picolinoyl chloride hydrochloride(SMILESS: O=C(Cl)C1=NC=CC=C1.[H]Cl,cas:39901-94-5) is researched.SDS of cas: 625-82-1. The article 《Catalytic Hydrogenation of CO2 to Methanol Using Multinuclear Iridium Complexes in a Gas-Solid Phase Reaction》 in relation to this compound, is published in Journal of the American Chemical Society. Let’s take a look at the latest research on this compound (cas:39901-94-5).

a novel approach is reported toward the catalytic hydrogenation of CO2 to methanol performed in the gas-solid phase using multinuclear iridium complexes at low temperature (30-80°). Although homogeneous CO2 hydrogenation in water catalyzed by amide-based iridium catalysts provided only a negligible amount of methanol, the combination of a multinuclear catalyst and gas-solid phase reaction conditions led to the effective production of methanol from CO2. The catalytic activities of the multinuclear catalyst were dependent on the relative configuration of each active species. Conveniently, methanol obtained from the gas phase could be easily isolated from the catalyst without contamination with CO, CH4, or formic acid (FA). The catalyst can be recycled in a batchwise manner via gas release and filling. A final turnover number of 113 was obtained upon reusing the catalyst at 60° and 4 MPa of H2/CO2 (3:1). The high reactivity of this system has been attributed to hydride complex formation upon exposure to H2 gas, suppression of the liberation of FA under gas-solid phase reaction conditions, and intramol. multiple hydride transfer to CO2 by the multinuclear catalyst.

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Reference:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Fresenius Environmental Bulletin called Photoelectrochemical reduction of CO2 to methanol at pyridinyl-immobilized CuInS2 thin film electrode, Author is Yuan, Jiongliang; Fan, Mingming; Yang, Liangwen; Hao, Cunjiang, which mentions a compound: 39901-94-5, SMILESS is O=C(Cl)C1=NC=CC=C1.[H]Cl, Molecular C6H5Cl2NO, Formula: C6H5Cl2NO.

A pyridinyl-immobilized CuInS2 thin film is developed, and the coverage of pyridinyl group on CuInS2 thin film is investigated. Using the immobilized CuInS2 thin film as the photocathode, the solar-driven photoelectrochem. reduction of CO2 to methanol is studied. Methanol yield reaches the maximum at the underpotential of 72 mV at pH 4.4, and Faraday efficiency for methanol is 98%. In addition, pyridinyl-immobilized thin film is stable for 10 h. The diffusion of CO2 might be the rate determining step in photoelectrochem. reduction of CO2, and methanol yield increases by 6.6 times when using semi immersion electrode. Therefore, it is expected that the gas diffusion electrode can enhance methanol yield significantly.

Here is a brief introduction to this compound(39901-94-5)Formula: C6H5Cl2NO, if you want to know about other compounds related to this compound(39901-94-5), you can read my other articles.

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Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Product Details of 39901-94-5. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: Picolinoyl chloride hydrochloride, is researched, Molecular C6H5Cl2NO, CAS is 39901-94-5, about A new pathway via intermediate 4-amino-3-fluorophenol for the synthesis of regorafenib. Author is Du, Fangyu; Zhou, Qifan; Shi, Yajie; Yu, Miao; Sun, Wenjiao; Chen, Guoliang.

A practical synthetic route to regorafenib, in which the target compound was obtained via a 10-step synthesis starting from 2-picolinic acid, 4-chloro-3-(trifluoromethyl)aniline and 3-fluorophenol was reported. Crucial to the strategy was the preparation of 4-amino-3-fluorophenol via Fries and Beckman rearrangements using an economical and practical protocol. The main advantages of the route include inexpensive starting materials and an acceptable overall yield. A scale-up experiment was carried out to provide regorafenib with 99.96% purity in 46.5% total yield.

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Reference:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Product Details of 39901-94-5. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: Picolinoyl chloride hydrochloride, is researched, Molecular C6H5Cl2NO, CAS is 39901-94-5, about Anti-selective [3+2] (hetero)annulation of non-conjugated alkenes via directed nucleopalladation. Author is Ni, Hui-Qi; Kevlishvili, Ilia; Bedekar, Pranali G.; Barber, Joyann S.; Yang, Shouliang; Tran-Dube, Michelle; Lu, Hou-Xiang; McAlpine, Indrawan; Liu, Peng; Engle, Keary M..

2,3-Dihydrobenzofurans and indolines were prepared by palladium-catalyzed heterocyclization of β,γ-unsaturated amides with 2-iodophenols and 2-iodoanilines, resp., using amide N-8-quinolinyl substituent as a coordinating directing group. 2,3-Dihydrobenzofurans and indolines are common substructures in medicines and natural products. Herein, we describe a method that enables direct access to these core structures from non-conjugated alkenyl amides and ortho-iodoanilines/phenols. Under palladium(II) catalysis this [3+2] heteroannulation proceeds in an anti-selective fashion and tolerates a wide variety of functional groups. N-Acetyl, -tosyl, and -alkyl substituted ortho-iodoanilines, as well as free -NH2 variants, are all effective. Preliminary results with malonate carbon-based coupling partners as a substitute for anilines and phenols also demonstrate the viability of forming indane core structures using this approach. Exptl. and computational studies on reactions with phenols support a mechanism involving turnover-limiting, endergonic directed oxypalladation, followed by intramol. oxidative addition and reductive elimination.

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Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Picolinoyl chloride hydrochloride, is researched, Molecular C6H5Cl2NO, CAS is 39901-94-5, about Potentially biologically active new substituted anilides of benzo[2,3-b]thiophene series, the main research direction is benzothiophenecarboxamide preparation conformation; nicotinamide preparation conformation.HPLC of Formula: 39901-94-5.

Anilides RCONMeC6H4CO2Me-4 [R = 2-chlorobenzothien-2-yl], RCONHC6H4C(:NH)NH2.HCl (I), R1CONHC6H4CN-4 [R1 = 3-pyridinyl], R1CONHC6H4C(:NH)NH2.HCl, and its methiodide (II), together with the earlier described RCONHC6H4CO2Me-4 (III) and RCONHC6H4CN, were prepared from the heterocyclic carbonyl chlorides and H2NC6H4CO2Me-4 or H2NC6H4CN-4, followed by n-methylation. The Pinner reaction was used in the preparations of amidino-substituted compounds It seems that all the prepared compounds could be biol. interesting, especially amidino-substituted anilides prepared in the form of water-soluble hydrochlorides or hydroiodides. Mol. and crystal structures of I-III were determined by X-ray single-crystal diffractometry in the solid state. I-III are not planar and the amide group (C=O in relation to NH group) is in trans position in all three compounds The 3-chlorobenzo[b]thiophene moiety in I and III is oriented with the chloro substituent in cis position in relation to amide NH group. The conformational characteristics of the compounds result from the introduction of different substituents or solvent mols. (water mol. in III), which leads to various intermol. hydrogen bonds formation (N-H•••O, N-H•••Cl, O-H•••Cl-, N-H•••I-) in I-III. Hydrogen bond formation could be responsible for the potential biol. activity of the compounds

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Reference:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem