Day: April 7, 2022

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 1671-88-1, is researched, SMILESS is NN1C(C2=NC=CC=C2)=NN=C1C3=NC=CC=C3, Molecular C12H10N6Journal, Polyhedron called Spin crossover (SCO) iron(II) coordination polymer chain: Synthesis, structural and magnetic characterizations of [Fe(abpt)2(μ-M(CN)4)] (M = PtII and NiII), Author is Setifi, Fatima; Charles, Catherine; Houille, Sylvie; Thetiot, Franck; Triki, Smail; Gomez-Garcia, Carlos J.; Pillet, Sebastien, the main research direction is iron platinum nickel dinuclear cyanide pyridinyltriazole coordination polymer preparation; crystal structure dinuclear iron platinum nickel cyanide coordination polymer; spin crossover heterodinuclear iron cyanide pyridinyltriazole coordination polymer chain.Safety of 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine.

New Fe(II) coordination polymeric neutral chains [Fe(abpt)2(μ-M(CN)4)], with M = PtII (1), NiII (2) and abpt = 4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole, were synthesized and characterized by IR spectroscopy, x-ray diffraction and magnetic measurements. The two compounds are isostructural as deduced from a Rietveld anal. of x-ray powder diffraction data of 2 simulated from the single crystal structure of 1. The crystal packing of 1 is formed by regular chains running along the crystallog. [-1 0 1] direction where the planar [Pt(CN)4]2- anion acts as a μ2-bridging ligand via two N atoms of two different trans cyano groups, while the two abpt mols. act as chelating ligands. Along the neutral chains, the Fe···Pt distances are imposed by the cyano groups of the [Pt(CN)4]2- moiety (5.027 and 5.022 Å at 294 and 150 K, resp.), leading to Fe···Fe intrachain distances of 10.055 and 10.045 Å at 294 and 150 K, resp. The thermal dependence of the product of the molar magnetic susceptibility times the temperature (χmT) for compound 1 shows a constant value close to 0.2 emu K mol-1 in the temperature range 10-300 K in the cooling and warming scans. Above 300 K, compound 1 shows a SCO transition from the LS to the HS configuration although the transition is not fully achieved at 400 K.

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Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – 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: 2,3,5-Trichloropyridin-4-ol, is researched, Molecular C5H2Cl3NO, CAS is 1970-40-7, about Ultrastructural change of tobacco chloroplasts induced by pyriclor.Application In Synthesis of 2,3,5-Trichloropyridin-4-ol.

Treatment of tobacco (Nicotiana tabacum, var NC-402) with 2,3,5-trichloro-4-pyridinol (pyriclor) leads to progressive disruption of chloroplast ultrastructure. Initial changes include the inception of a spherical form, swelling of the fret system, and commencement of loss of starch. More advanced changes include the complete disappearance of starch, further swelling and disorganization of the fret membrane system, followed by swelling and disruption of the membranes of the granal disks and rupture of the chloroplast envelope. The changes induced by pyriclor on chloroplast ultrastructure in tobacco are analogous to those caused by atrazine on kidney bean (Phaseolus vulgaris) and barnyard grass (Echinochloa crusgalli). The shape and size of mitochondria were not altered by the treatment; however, there appeared to be a significant increase in the number of mitochondria present when alterations in chloroplast structure could be seen. The appearance of visual symptoms of phytotoxicity (chlorosis) correlated with the onset of disruptive changes in chloroplast ultrastructure.

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In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Aquatic dissipation of the herbicide triclopyr in Lake Minnetonka, Minnesota, published in 2000-05-31, which mentions a compound: 1970-40-7, Name is 2,3,5-Trichloropyridin-4-ol, Molecular C5H2Cl3NO, Related Products of 1970-40-7.

A study of the aquatic fate of the triethylamine salt of triclopyr (3,5,6-trichloro-2-pyridinyloxyacetic acid) was conducted in three bays of Lake Minnetonka, Minnesota. Triclopyr is under review by the US Environmental Protection Agency as a selective aquatic herbicide. The primary purpose of this study was to determine dissipation rates of the parent active ingredient, triclopyr, and its major metabolites, 3,5,6-trichloropyridinol (TCP) and 3,5,6-trichloro-2-methoxypyridine (TMP) in selected matrixes, including water, sediment, plants, finfish, and shellfish. Two 6.5-ha plots dominated by the weedy species Eurasian watermilfoil (Myriophyllum spicatum L) were treated with triclopyr-triethylammonum at a rate of 2.5 mg AE/L (2.5 ppm) on June 21-23, 1994. A third 6.5-ha plot was established as an untreated reference Water and sediment samples were collected from within the plots and at selected locations up to 1600 m outside of the plots through six weeks’ post-treatment for chem. residue anal. In addition, residue samples were collected from the target and nontarget plants and other nontarget matrixes, including game and rough fish, clams and crayfish. All test animals were sequestered in cages located in the center of each plot, and samples were collected through four weeks’ post-treatment. Half-lives for dissipation of triclopyr and TCP in water ranged from 3.7 to 4.7 days and from 4.2 to 7.9 days, resp., with trace amounts of TMP found. Peak triclopyr sediment values ranged from 257 to 335 ng/g, with a mean half-life of 5.4 days, while peak TCP sediment levels ranged from 27 to 65 ng/g (mean half-life = 11.0 days). Trace levels of TMP were detected at one treatment site at one sampling event. Triclopyr and TCP accumulated and cleared from animal tissues proportionately to concentrations in the water (triclopyr dissipation half-lives <11 days, TCP <14 days). TMP levels were two to three times higher than those of the other compounds, particularly in visceral tissue. In all cases, residues of these compounds were higher in the inedible portions of the animals, and were usually higher in bottom-feeding fish species. I hope my short article helps more people learn about this compound(2,3,5-Trichloropyridin-4-ol)Related Products of 1970-40-7. Apart from the compound(1970-40-7), you can read my other articles to know other related compounds.

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Application of 147700-62-7. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: (3aR,8aR)-2,2-Dimethyl-4,4,6,8,8-pentaphenyltetrahydro-[1,3]dioxolo[4,5-e][1,3,2]dioxaphosphepine, is researched, Molecular C37H33O4P, CAS is 147700-62-7, about Pt-Catalyzed enantioselective diboration of terminal alkenes with B2(pin)2. Author is Kliman, Laura T.; Mlynarski, Scott N.; Morken, James P..

The Pt-catalyzed enantioselective addition of bis(pinacolato)diboron to simple monosubstituted alkenes is described. This reaction occurs in the presence of a readily available chiral phosphonite ligand and is effective with a variety of terminal alkene substrates. Importantly, the reaction can operate with catalyst loadings of only 1 mol % Pt. While oxidation of the intermediate 1,2-bis(boronate) ester provides the chiral 1,2-diol as the reaction product, the intermediate may also be subjected to homologation/oxidation to furnish a chiral 1,4-diol as the reaction product.

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Gupta, Gajendra; Prasad, Kota Thirumala; Das, Babulal; Rao, Kollipara Mohan published an article about the compound: 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine( cas:1671-88-1,SMILESS:NN1C(C2=NC=CC=C2)=NN=C1C3=NC=CC=C3 ).Application In Synthesis of 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:1671-88-1) through the article.

A quite general approach for the preparation of η5-and η6-cyclic hydrocarbon platinum group metal complexes is reported. The dinuclear arene ruthenium complexes [(η6-arene)Ru(μ-Cl)Cl]2 (arene = C6H6, C10H14 and C6Me6) and η5-pentamethylcyclopentadienyl rhodium and iridium complexes [(η6-C5Me5)M(μ-Cl)Cl]2 (M = Rh, Ir) react with 2 equivalent of 4-amino-3,5-di-pyridyltriazole (dpt-NH2) in presence of NH4PF6 to afford the corresponding mononuclear complexes of the type [(η6-arene)Ru(dpt-NH2)Cl]PF6 {arene = C10H14 (1), C6H6 (2) and C6Me6 (3)} and [(η6-C5Me5)M(dpt-NH2)Cl]PF6 {M = Rh (4), Ir (5)}. However, the mononuclear η5-cyclopentadienyl analogs such as [(η5-C5H5)Ru(PPh3)2Cl], [(η5-C5H5)Os(PPh3)2Br], [(η5-C5Me5)Ru(PPh3)2Cl] and [(η5-C9H7)Ru(PPh3)2Cl] complexes react in presence of 1 equivalent of dpt-NH2 and 1 equivalent of NH4PF6 in methanol yielded mononuclear complexes [(η5-C5H5)Ru(PPh3)(dpt-NH2)]PF6 (6), [(η5-C5H5)Os(PPh3)(dpt-NH2)]PF6 (7), [(η5-C5Me5)Ru(PPh3)(dpt-NH2)]PF6 (8) and [(η5-C9H7)Ru(PPh3)(dpt-NH2)]PF6 (9), resp. These compounds have been totally characterized by IR, NMR and mass spectrometry. The mol. structures of 4 and 6 have been established by single crystal x-ray diffraction and some of the representative complexes have also been studied by UV-Vis spectroscopy.

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Isoquinoline – Wikipedia,
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Related Products of 1671-88-1. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine, is researched, Molecular C12H10N6, CAS is 1671-88-1, about Synthesis, structure and electrochemistry of a novel dinuclear cobalt(II) complex containing pyrrole units: an unusual reductive electropolymerization of the dinuclear cobalt(II) complex. Author is Mandal, Sanat K.; Clase, Howard J.; Bridson, John N.; Ray, Soma.

4-(1H-pyrrole-1-yl)-3,5-bis(pyridine-2-yl)-1,2,4-triazole (L) was prepared and used to prepare [Co2L2(H2O)4]Cl4.2MeOH.2H2O which was characterized by elemental anal., x-ray crystallog., and electrochem. The complex undergoes reductive electropolymerization, forming films on a glassy carbon electrode. The polymer is fairly conductive (∼2 × 10-6 Ω-1 cm-1 at -1.40 V vs. SCE). Electroreduction of CO2 occurs at the polymer film-modified electrode.

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Reference:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Hua, Jia; Gao, Lu; Li, Baiyan published the article 《Bis(4-amino-3,5-di-2-pyridyl-1,2,4-triazole-κ2N1,N5)diaquazinc(II) dinitrate》. Keywords: crystal structure zinc aminodipyridyltriazole aqua complex dinitrate; mol structure zinc aminodipyridyltriazole aqua complex nitrate; hydrogen bond zinc aminodipyridyltriazole aqua complex dinitrate; pyridyltriazole aminodi zinc aqua complex dinitrate; triazole aminodipyridyl zinc aqua complex dinitrate.They researched the compound: 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine( cas:1671-88-1 ).HPLC of Formula: 1671-88-1. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:1671-88-1) here.

The asym. unit of bis(4-amino-3,5-di-2-pyridyl-1,2,4-triazole-κ2N1,N5)diaquazinc(2+) dinitrate, [Zn(C12H10N6)2(H2O)2](NO3)2, contains 1/2 of the complex mol. and 1 NO3-. The ZnII ion displays a distorted tetragonal-pyramidal geometry with 4 N atoms from 2 chelating 4-amino-3,5-di-2-pyridyl-1,2,4-triazole (2-bpt) ligands in the basal plane and 1 H2O mol. occupying the apical site. Another H2O mol. at the opposite of the apical site has a weak interaction with the ZnII ion [Zn-O = 2.852(5) Å]. The ZnII ion and the 2 H2O mols. lie on a 2-fold rotation axis. An extensive system of H bonds involving the NH2 groups of the 2-bpt ligands, H2O mols. and nitrate anions links all residues into a 3-dimensional network. Crystallog. data are given.

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Isoquinoline – Wikipedia,
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Wippich, Julian; Truchan, Nadina; Bach, Thorsten published the article 《Rhodium-Catalyzed N-tert-Butoxycarbonyl (Boc) Amination by Directed C-H Bond Activation》. Keywords: butoxycarbonyl amination carbon hydrogen bond rhodium catalyst.They researched the compound: 2-(5-Bromothiophen-2-yl)pyridine( cas:123784-07-6 ).Related Products of 123784-07-6. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:123784-07-6) here.

N-tert-Butoxycarbonyl azide (BocN3) is an efficient and economic source for the directed introduction of N-Boc protected amino groups into the thiophene and benzene nucleus. Yields for the amination of 2-pyridin-2-ylthiophenes (10 examples) were 52-88%. For the amination of the resp. benzenes (10 examples) yields between 54% and 99% were recorded with an improved reactivity observed for substrates that bear an electron-withdrawing group. The reaction was applied to short total syntheses of the indoloquinoline alkaloids quindoline and cryptolepine. The facile removal of the Boc protecting group was the key to the success of the syntheses. The scope of the reaction was extended to a C(sp3)-H bond amination and to the amination of 2-phenyloxazoline. For the amination of 2-pyridin-2-ylbenzene a kinetic deuterium isotope effect of 2.0 was determined

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Reference of 2-(4-(tert-Butoxycarbonyl)piperazin-1-yl)acetic acid. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 2-(4-(tert-Butoxycarbonyl)piperazin-1-yl)acetic acid, is researched, Molecular C11H20N2O4, CAS is 156478-71-6, about Synthesis and Pharmacological Evaluation of Tetrahydro-γ-carboline Derivatives as Potent Anti-inflammatory Agents Targeting Cyclic GMP-AMP Synthase. Author is Tan, Jing; Wu, Bing; Chen, Tingting; Fan, Chen; Zhao, Jiannan; Xiong, Chaodong; Feng, Chunlan; Xiao, Ruoxuan; Ding, Chunyong; Tang, Wei; Zhang, Ao.

The activation of cyclic GMP-AMP synthase (cGAS) by double-stranded DNA is implicated in the pathogenesis of many hyper inflammatory and autoimmune diseases, and the cGAS-targeting small mol. has emerged as a novel therapeutic strategy for treating these diseases. However, the currently reported cGAS inhibitors are far beyond maturity, barely demonstrating in vivo efficacy. Inspired by the structural novelty of compound I (G140), a structural optimization on both its side chain and the central tricyclic core, leads to several subseries of compounds, including those unexpectedly cyclized complex ones. Compound II (R = aminomethyl) bearing an N-glycylglycinoyl side chain was identified as the most potent one with cellular IC50 values of 1.38 and 11.4μM for h- and m-cGAS, resp. Mechanistic studies confirmed its direct targeting of cGAS. Further, compound II (R = aminomethyl) showed superior in vivo anti-inflammatory effects in the lipopolysaccharide-induced mouse model. The encouraging result of compound II (R = aminomethyl) provides solid evidence for further pursuit of cGAS-targeting inhibitors as a new anti-inflammatory treatment.

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Isoquinoline – Wikipedia,
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Quality Control of 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine. 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: 3,5-Di(pyridin-2-yl)-4H-1,2,4-triazol-4-amine, is researched, Molecular C12H10N6, CAS is 1671-88-1, about The Key Role of the Intermolecular π-π Interactions in the Presence of Spin Crossover in Neutral [Fe(abpt)2A2] Complexes (A = Terminal Monoanion N Ligand). Author is Dupouy, Gaelle; Marchivie, Mathieu; Triki, Smail; Sala-Pala, Jean; Salaun, Jean-Yves; Gomez-Garcia, Carlos J.; Guionneau, Philippe.

New Fe(II) complexes [Fe(abpt)2(tcm)2] (1), [Fe(abpt)2(tcnome)2] (2), and [Fe(abpt)2(tcnoet)2] (3) (abpt = 4-amino-3,5-bis(pyridin-2-yl)-1,2,4-triazole, tcm- = [C(CN)3]- = tricyanomethanide anion; tcnome- = [(NC)2CC(OCH3)C(CN)2]- = 1,1,3,3-tetracyano-2-methoxypropenide anion; tcnoet- = [(NC)2CC(OC2H5)C(CN)2]- = 1,1,3,3-tetracyano-2-ethoxypropenide anion) were synthesized and characterized by IR spectroscopy, magnetic properties and by variable-temperature single-crystal x-ray diffraction. The crystal structure determinations of 1 and 2 reveal in both cases centrosym. discrete Fe(II) monomeric structures in which two abpt chelating ligands stand in the equatorial plane and two terminal polynitrile ligands complete the distorted octahedral environment in trans positions. For 3, the crystallog. studies revealed two polymorphs, 3-A and 3-B, exhibiting similar discrete mol. structures to those found for 1 and 2 but with different mol. arrangements. In agreement with the variable-temperature single-crystal x-ray diffraction, the magnetic susceptibility measurements, performed in the temperature range 2-400 K, showed a spin-crossover phenomenon above room temperature for complexes 1, 3-A, and 3-B with a T1/2 of 336, 377, and 383 K, resp., while complex 2 remains in the high-spin ground state (S = 2) in the whole temperature range. To understand further the magnetic behaviors of 1, 3-A, and 3-B, single-crystal x-ray diffraction measurements were performed at high temperatures The crystal structures of both polymorphs could not be obtained >400 K because the crystals decomposed However, single-crystal x-ray data were collected for compound 1, which reaches the full high-spin state at lower temperatures Its crystal structure, solved at 400 K, showed a strong modification of the Fe coordination sphere (average Fe-N = 2.157(3) Å vs. 1.986(3) Å at 293 K). In agreement with the magnetic properties. Such structural behavior is a signature of the spin-state transition from low-spin (LS) to high-spin (HS). From the intermol. π stacking observed for the series described in this paper and for related complexes involving similar discrete structures, complexes displaying frontal π stacking present spin transition such as 1, 3-A, and 3-B and those involving sideways π stacking such as complex 2 remain in the HS state.

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Reference:
Isoquinoline – Wikipedia,
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