Tag: M.W:100-200

Product Details of 1452-77-3. 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: Picolinamide, is researched, Molecular C6H6N2O, CAS is 1452-77-3, about Structure and NMR properties of the dinuclear complex di-μ-azido-κ4N1:N1-bis[(azido-κN)(pyridine-2-carboxamide-κ2N1,O)zinc(II)]. Author is Pastor Ramirez, Candida; Bernes, Sylvain; Hernandez Anzaldo, Samuel; Reyes Ortega, Yasmi.

The new diamagnetic complex, [Zn2(N3)4(C6H6N2O)2] or [Zn2(pca)2(μ1,1-N3)2(N3)2] was synthesized using pyridine-2-carboxamide (pca) and azido ligands, and characterized using various techniques: IR spectroscopy and single-crystal X-ray diffraction in the solid state, and NMR (NMR) in solution The mol. is placed on an inversion center in space group P [inline formula omitted] . The pca ligand chelates the metal center via the pyridine N atom and the carbonyl O atom. One azido ligand bridges the two symmetry-related Zn2+ cations in the end-on coordination mode, while the other independent azido anion occupies the fifth coordination site, as a terminal ligand. The resulting five-coordinate Zn centers have a coordination geometry intermediate between trigonal bipyramidal and square pyramidal. The behavior of the title complex in DMSO solution suggests that it is a suitable NMR probe for similar or isostructural complexes including other transition-metal ions. The diamagnetic nature of the complex is reflected in similar 1H and 13C NMR chem. shifts for the free ligand pca as for the Zn complex.

Here is just a brief introduction to this compound(1452-77-3)Product Details of 1452-77-3, more information about the compound(Picolinamide) is in the article, you can click the link below.

Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Computed Properties of C4H11ClN2O. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: D-Alanine methylamide hydrochloride, is researched, Molecular C4H11ClN2O, CAS is 61302-99-6, about Peptide models for β-turns. A circular dichroism study. Author is Crisma, M.; Fasman, G. D.; Balaram, H.; Balaram, P..

The CD spectra of β-turn model peptides PhCH2O2C-Aib-Pro-Aib-Pro-OMe (I, Aib = NHCMe2CO), Piv-Pro-Aib-NHMe (II, Piv = Me3CCO), Piv-Pro-D-Ala-NHMe (III), and Piv-Pro-Val-NHMe (IV) were examined in methanol, hexafluoroisopropanol, and cyclohexane. Type I and Type II β-turns were observed for I and II, resp., in the solid state, while the Pro-D-Ala sequence adopts a Type II β-turn in a related peptide crystal structure. A class C spectrum was observed for I in various solvents, suggesting a variant of a Type I (III) structure. The Type II β-turn is characterized by a CD spectrum having two pos. CD bands at ∼230 nm and ∼202 nm, a feature observed in III in cyclohexane and methanol and for II in methanol. II exhibits solvent-dependent CD spectra, which may be rationalized by considering Type II, III and V reverse turn structures. IV adopts non-β-turn structures in polar solvents, but exhibits a class B spectrum in cyclohexane suggesting a population of Type I β-turns.

Here is just a brief introduction to this compound(61302-99-6)Computed Properties of C4H11ClN2O, more information about the compound(D-Alanine methylamide hydrochloride) is in the article, you can click the link below.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Application In Synthesis of Picolinamide. 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: Picolinamide, is researched, Molecular C6H6N2O, CAS is 1452-77-3, about Dipicolinamide functionalized titania for highly efficient sorption of tetra and hexavalent actinide. Author is Pahan, Sumit; Sengupta, Arijit; Musharaf Ali, Sk.; Debnath, A. K.; Banerjee, D.; Vincent, T.; Sugilal, G.; Kaushik, C. P..

Dipicolinamide functionalized titania particles have been synthesized for efficient decontamination of uranyl and thorium ions from aqueous acidic waste solution Langmuir isotherm was found to be predominating with maximum sorption capacity of 125 mg/g for Th and 111 mg/g for U, resp. The sorption was found to follow pseudo 2nd order kinetics predominately, with rate constant 8.6E-04 mg g-1 min-1 for Th and 6.1E-04 mg g-1 min-1 for U, resp. Up to 200 kGy of gamma irradiation, not much deterioration in extraction performance of sorbent material was observed Three contacts of 0.1 M aqueous solutions of oxalic acid and sodium carbonate were found to be effective in quant. elution of Th4+ and UO2+2 from the loaded sorbent, resp. The sorption of U and Th on dipicolinamide functionalized titania was evidenced by SEM images, elemental mapping and the EDX. Theor. investigation revealed that, the solution phase free energy of sorption (ΔGsol) was higher for Th4+ (-114.1 kcal mol-1) compared to UO2+2 (-80.41 kcal mol-1).

Here is just a brief introduction to this compound(1452-77-3)Application In Synthesis of Picolinamide, more information about the compound(Picolinamide) is in the article, you can click the link below.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Related Products of 1452-77-3. 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: Picolinamide, is researched, Molecular C6H6N2O, CAS is 1452-77-3, about Characterization of pyridine biodegradation by two Enterobacter sp. strains immobilized on Solidago canadensis L. stem derived biochar. Author is Nie, Zimeng; Yan, Binghua; Xu, Yunhai; Awasthi, Mukesh Kumar; Yang, Haijun.

In this study, two pyridine-degrading strains namely Enterobacter cloacae complex sp. BD17 and Enterobacter sp. BD19 were isolated from the aerobic tank of a pesticide wastewater treatment plant. The mixed bacteria H4 composed of BD17 and BD19 at a ratio of 1:1 was immobilized by Solidago canadensis L. stem biochar with a dosage of 2 g·L–1. The highest pyridine removal rate of 91.70% was achieved by the immobilized H4 at an initial pyridine concentration of 200 mg·L-1, pH of 7.0, temperature of 28°C and salinity of 3.0% within 36 h. The main intermediates of pyridine degradation by BD17 were pyridine-2-carboxamide, 2-aminopropanediamide, and 2-aminoacetamide, while 2-picolinic acid, iso-Pr acetate, iso-Pr alc., and acetaldehyde were identified with BD19 by adopting GC-MS technique. Interestingly, there was a possibility of totally mineralization of pyridine and the corresponding degradation pathways of BD17 and BD19 were revealed for the first time.

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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Picolinamide, is researched, Molecular C6H6N2O, CAS is 1452-77-3, about Synthesis and evaluation of 4-(2-fluoro-4-[11C]methoxyphenyl)-5-((2-methylpyridin-4-yl)methoxy)picolinamide for PET imaging of the metabotropic glutamate receptor 2 in the rat brain.Formula: C6H6N2O.

Metabotropic glutamate receptor 2 (mGluR2) has been suggested as a therapeutic target for treating schizophrenia-like symptoms arising from increased glutamate transmission in the human forebrain. However, no reliable positron emission tomog. (PET) radiotracer allowing for in vivo visualization of mGluR2 in the human brain is currently available. In this study, we synthesized 4-(2-fluoro-4-[11C]methoxyphenyl)-5-((2-methylpyridin-4-yl)methoxy)picolinamide ([11C]1) and evaluated its potential as a PET tracer for imaging mGluR2 in the rodent brain. Compound 1, a neg. allosteric modulator (NAM) of mGluR2, showed high in vitro binding affinity (IC50: 26 nM) for mGluR2 overexpressed in human cells. [11C]1 was synthesized by O-[11C]methylation of the phenol precursor 2 with [11C]methyl iodide. After the reaction, HPLC purification and formulation, [11C]1 of 7.4 ± 2.8 GBq (n = 8) was obtained from [11C]carbon dioxide of 22.5 ± 4.8 GBq (n = 8) with >99% radiochem. purity and 70 ± 32 GBq/μmol (n = 8) molar activity at the end of synthesis. In vitro autoradiog. for rat brains showed that [11C]1 binding was heterogeneously distributed in the cerebral cortex, striatum, hippocampus, and cerebellum. This pattern is consistent with the regional distribution pattern of mGluR2 in the rodent brain. The radioactivity was significantly reduced by self- or MNI-137 (a mGluR2 NAM) blocking. Small-animal PET studies indicated a low in vivo specific binding of [11C]1 in the rat brain. The brain uptake was increased in a P-glycoprotein and breast cancer resistant protein double knockout mouse, when compared to a wild-type mouse. While [11C]1 presented limited potential as an in vivo PET tracer for mGluR2, we suggested that it can be used as a lead compound for developing new radiotracers with improved in vivo brain properties.

Here is just a brief introduction to this compound(1452-77-3)Formula: C6H6N2O, more information about the compound(Picolinamide) is in the article, you can click the link below.

Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Application of 1452-77-3. 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: Picolinamide, is researched, Molecular C6H6N2O, CAS is 1452-77-3, about Highly Efficient Synthesis of Alkyl N-Arylcarbamates from CO2, Anilines, and Branched Alcohols with a Catalyst System of CeO2 and 2-Cyanopyridine. Author is Gu, Yu; Miura, Ayaka; Tamura, Masazumi; Nakagawa, Yoshinao; Tomishige, Keiichi.

Highly efficient synthesis of alkyl N-arylcarbamates from CO2, anilines, and alcs. using the CeO2 and 2-cyanopyridine catalyst system was substantiated by selecting branched alcs., such as 2-propanol and cyclohexanol, with minimized formation of byproducts, such as dialkyl carbonates and picolinamide. The catalyst system is operable even at low CO2 pressure (≤1 MPa), and the target carbamates were obtained with high arylamine-based yields (up to 94%). Alkyl N-phenylcarbamates were obtained from CO2, anilines, and alcs. with high yield and minimized formation of byproducts by using branched alcs.

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Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: Picolinamide(SMILESS: O=C(N)C1=NC=CC=C1,cas:1452-77-3) is researched.COA of Formula: C8H11NO2. The article 《Screening a trace amount of pharmaceutical cocrystals by using an enhanced nano-spot method》 in relation to this compound, is published in European Journal of Pharmaceutics and Biopharmaceutics. Let’s take a look at the latest research on this compound (cas:1452-77-3).

Cocrystn. is an attractive and promising technol. that can improve the phys. properties of formulations of active pharmaceutical ingredients (APIs). We have developed a “”nano-spot method”” that can evaluate the crystalline form on the nanogram scale. In this study, the following studies were performed to obtain versatile and comprehensive improvements to the nano-spot method: modification of the sample solution, application of solvent vapor exposure to attempt the precipitation of various states of crystals, and adoption of low-frequency Raman spectroscopy. Carbamazepine was used as a model API and cocrystn. screening was examined with 12 cocrystal formers (coformers). In the case of combinations that are already known to form cocrystals, spectra similar to those of previously reported cocrystals or new spectra were obtained. It was considered that the reported cocrystals or new polymorphs were obtained. In contrast, in the case of the combination which has been reported not to form a cocrystal, the spectra were consistent with that for the phys. mixture of API and coformer, suggesting that a cocrystal also did not form in this screening. In addition, the newly adopted low-frequency Raman spectroscopy enabled the high-sensitive detection of the crystalline form.

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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Fan, Xiao-Nan; Deng, Wei; Liu, Zhen-Jiang; Yao, Zi-Jian researched the compound: Picolinamide( cas:1452-77-3 ).Formula: C6H6N2O.They published the article 《Half-Sandwich Iridium Complexes for the One-Pot Synthesis of Amides: Preparation, Structure, and Diverse Catalytic Activity》 about this compound( cas:1452-77-3 ) in Inorganic Chemistry. Keywords: iridium half sandwich Schiff base complex preparation hydration catalyst; nitrile hydration oxime rearrangement preparation aromatic amide iridium catalyst; crystal structure iridium half sandwich Schiff base complex; mol structure iridium half sandwich Schiff base complex. We’ll tell you more about this compound (cas:1452-77-3).

Several types of air-stable N,O-coordinate half-sandwich iridium complexes containing Schiff base ligands with the general formula [Cp*IrClL] were synthesized in good yields. These stable iridium complexes displayed a good catalytic efficiency in amide synthesis. A variety of amides with different substituents were obtained in a one-pot procedure with excellent yields and high selectivities through the amidation of aldehydes with NH2OH·HCl and nitrile hydration under the catalysis of complexes 1-4. The excellent and diverse catalytic activity, mild conditions, broad substance scope, and environmentally friendly solvent make this system potentially applicable in industrial production Half-sandwich iridium complexes 1-4 were characterized by NMR, elemental anal., and IR techniques. Mol. structures of complexes 2 and 3 were confirmed by single-crystal X-ray anal. Half-sandwich iridium complexes were synthesized, which exhibited a high catalytic activity for amide synthesis in a one-pot procedure with excellent yields and high selectivity through aldehyde amidation or nitrile hydration. The broad substrate scope, mild reaction conditions, and high yields of the products made this catalytic system attractive in the industrial process.

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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

Synthetic Route of C6H6N2O. 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: Picolinamide, is researched, Molecular C6H6N2O, CAS is 1452-77-3, about Novel thiazolinyl-picolinamide based palladium(II) complex-impregnated urinary catheters quench the virulence and disintegrate the biofilms of uropathogens. Author is Rajkumar, Deeksha; Rubini, Durairajan; Sudharsan, M.; Suresh, D.; Nithyanand, Paramasivam.

Pseudomonas aeruginosa and Serratia marcescens are prominent members belonging to the group of ESKAPE pathogens responsible for Urinary Tract Infections (UTI) and nosocomial infections. Both the pathogens regulate several virulence factors, including biofilm formation through quorum sensing (QS), an intercellular communication mechanism. The present study describes the anti-biofilm and QS quenching effect of thiazolinyl-picolinamide based palladium(II) complexes against P. aeruginosa and S. marcescens. Palladium(II) complexes showed quorum sensing inhibitory potential in inhibiting swarming motility behavior, pyocyanin production and other QS mediated virulence factors in both P. aeruginosa and S. marcescens. In addition, the establishment of biofilms was prevented on palladium (II) coated catheters. Overall, the present study demonstrates that thiazolinyl-picolinamide based palladium (II) complexes will be a promising strategy to combat device-mediated UTI infections.

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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: Picolinamide(SMILESS: O=C(N)C1=NC=CC=C1,cas:1452-77-3) is researched.Name: 8-Hydroxyquinoline 1-oxide. The article 《Spectroscopic and electrochemical recognition of H2PO-4 based on a ruthenium complex with 2-picolinamide》 in relation to this compound, is published in Journal of Organometallic Chemistry. Let’s take a look at the latest research on this compound (cas:1452-77-3).

A ruthenium polypyridyl complex 4(PF6) with 2-picolinamide as an anionic NN̂ bidentate ligand is synthesized and characterized, including single-crystal X-ray anal. As an effective anion receptor in CH2Cl2, complex 4(PF6) shows selective spectroscopic and electrochem. recognition towards H2PO-4 over other anions tested (F-, Cl-, Br-, I-, HP2O3-7, HSO-4, AcO- and NO-3). Job’s plot and mass spectral analyses support that an adduct is formed between 4 and H2PO-4 with a 1:2 binding stoichiometry. The absorption spectral titration of 4(PF6) with H2PO-4 yields a global association constant in the order of 108 L2·mol-2 and an optical detection limit of 1.4 x 10-6 mol·L-1. In response to the presence of H2PO-4, the Ru(II/III) redox couple of 4(PF6) displays a “”two-wave behavior”” accompanied by a large neg. shift from +0.74 to +0.45 V vs Ag/AgCl. 1H NMR spectral titration analyses suggest that effective hydrogen-bonding interactions are present between 4 and H2PO-4, which are believed responsible for the observed spectroscopic and electrochem. response of 4(PF6) toward H2PO-4.

Compound(1452-77-3)Name: Picolinamide received a lot of attention, and I have introduced some compounds in other articles, similar to this compound(Picolinamide), if you are interested, you can check out my other related articles.

Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem