Tag: M.W=100-200

COA of Formula: C6H5N5. 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. Compound: 5-(4-Pyridyl)-1H-tetrazole, is researched, Molecular C6H5N5, CAS is 14389-12-9, about Loading of a Coordination Polymer Nanobelt on a Functional Carbon Fiber: A Feasible Strategy for Visible-Light-Active and Highly Efficient Coordination-Polymer-Based Photocatalysts.

To improve the photocatalytic properties of coordination polymers under irradiation in the visible-light region, coordination polymer nanobelts (CPNB) were loaded on functional carbon synthetic fibers (FCF) through the use of a simple colloidal blending process. The resulting coordination polymer nanobelt loaded functional carbon synthetic fibers composite material (CPNB/FCF) exhibited dramatically improved photocatalytic activity for the degradation of rhodamine B (RhB) under visible-light irradiation Optical and electrochem. methods illustrated the enhanced photocatalytic activity of CPNB/FCF originated from high separation efficiency of photogenerated electrons and holes on the interface of CPNB and FCF, which was produced by the synergy effect between them. In the composite material, the role of FCF could be described as photosensitizer and good electron transporter. For FCF, the number of functional groups on its surface has a significant influence on the photocatalytic performance of the resulting CPNB/FCF composite material, and an ideal FCF carrier was obtained as a highly efficient CPNB/FCF photocatalyst. CPNB/FCF showed outstanding stability during the degradation of rhodamine B (RhB); thus, the material is suitable for use as a photocatalyst in the treatment of organic dyes in water.

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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Application of 20198-19-0. 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: 2-Aminoquinazolin-4(3H)-one, is researched, Molecular C8H7N3O, CAS is 20198-19-0, about Fluorescence characteristics of 3-aminoisocarbostyril derivatives (3). Fluorescence characteristics of isocarbostyrils and related compounds. Author is Takadate, Akira; Yoshimura, Naonori; Goya, Shujiro; Matsumoto, Hitoshi.

The fluorescence spectra of I (R = H, H2N, PhNH; Z = NH, O) and II were studied with respect to their structures. The maximum depended on such partial structures as lactam, lactone, or guanidino moieties. All compounds except II (R = PhNH2) (III) exhibited high fluorescence in EtOH. III and 2-anilino-4-methoxyquinazoline showed significant increased fluorescence in less polar solvents such as C6H6 and cyclohexane.

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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 2-Aminoquinazolin-4(3H)-one( cas:20198-19-0 ) is researched.Synthetic Route of C8H7N3O.Masharipov, S.; Nazhimov, K. O.; Kasymova, S. S.; Askarov, M. A. published the article 《4-Quinazolone derivatives as stabilizers for PVC》 about this compound( cas:20198-19-0 ) in Plasticheskie Massy. Keywords: quinazolone derivative heat stabilizer PVC. Let’s learn more about this compound (cas:20198-19-0).

Derivatives of 4-quinazolone increased the thermal stability of PVC by 2-16 fold. The inhibiting action of 4-quinazolone derivatives during PVC degradation is due to to the binding of gaseous HCl and replacement of labile Cl atoms by the quinazolone groups, and their stabilization activity depends on the type of groups replacing H in 4-quinazolone. The thermal stability of PVC linoleum containing 2-amino-4-quinazolone-Co acetate complex was 2.5-3 fold higher than that of PVC containing com. Ca stearate, without changes in physicomech. properties and with improvement of properties in some cases.

Compound(20198-19-0)Synthetic Route of C8H7N3O received a lot of attention, and I have introduced some compounds in other articles, similar to this compound(2-Aminoquinazolin-4(3H)-one), if you are interested, you can check out my other related articles.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Related Products of 20198-19-0. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 2-Aminoquinazolin-4(3H)-one, is researched, Molecular C8H7N3O, CAS is 20198-19-0, about Synthesis of 2-amino-4-quinazolones and spectral study of their tautomeric equilibrium state. Author is Shakhidoyatov, Kh. M.; Yun, L. M.; Samiev, R. A..

The identity of UV spectra of the parent and methylated aminoquinazolones I (R,R1 = H,H; Me,H; H,Me; Me,Me) was evidence for a single amino-keto tautomeric form with double bond C4:O and N1:C2. Comparison of UV spectra in neutral and basic media established that deprotonation occurs at N3 only in the parent (R,R1 = H,H) compound, consistent with the observed methylation at N3; i.e., no deprotonation of the amino group is observed under these conditions.

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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Wang, Xiu-Li; Li, Tian-Jiao; Tian, Ai-Xiang; Li, Na; Yang, Yang; Ning, Ya-Li; Hou, Xue published the article 《Influence of N-donor sites in 5-(x-pyridyl)-1H-tetrazole ligands (x = 2, 4) on assembly of polyoxometalate-based compounds modified by multinuclear metal clusters and infinite chains》. Keywords: copper silver pyridyltetrazolate molybdophosphate molybdosilicate preparation structure electrochem photocatalyst; crystal structure copper silver pyridyltetrazolate molybdophosphate molybdosilicate polyoxometalate.They researched the compound: 5-(4-Pyridyl)-1H-tetrazole( cas:14389-12-9 ).Recommanded Product: 14389-12-9. 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:14389-12-9) here.

Through tuning the N-donor site of the pyridyl group in 5-(x-pyridyl)-1H-tetrazole ligands (x = 2, 4), four new Keggin-based compounds, [Cu7(2-ptz)8(OH)2(H2O)2(HPMoVI10MoV2O40)]·4H2O (1), [Cu5(2-ptz)6(HPMoVI10MoV2O40)(H2O)4]·4H2O (2), [Ag6(4-ptz)4(H2SiMo12O40)] (3) and [Ag5(4-ptz)4(H2PMo12O40)]·5H2O (4) (2-ptzH = 5-(2-pyridyl)-1H-tetrazole, 4-ptzH = 5-(4-pyridyl)-1H-tetrazole), were successfully synthesized under hydrothermal conditions and structurally characterized. Compound 1 possesses two kinds of CuII subunits: penta-nuclear clusters and mono-nuclear subunits, which connect with each other to form a one dimensional (1D) stair-like metal-organic chain. The adjacent 1D stair-like chains are further linked by tetradentate Keggin anions to construct a 2D layer. In compound 2, the tetra-nuclear CuII clusters and mono-nuclear CuII subunits construct a 2D metal-organic layer, which is further linked by bidentate Keggin anions to build a 3D framework. In compound 3, the 4-ptz ligand links AgI ions with tetrazole groups to form 1D infinite Ag-ptz chains, which are extended by the pyridyl group of 4-ptz and the tetrazole groups of other 4-ptz mols. to construct a 2D layer. The adjacent 2D layers are further linked by 6-connected Keggin anions to build a 3D framework. In compound 4, the 4-ptz ligands are linked by AgI ions to form 1D infinite Ag-ptz belts. The Keggin anions are linked by AgI ions to construct another infinite inorganic chain, in which each Keggin anion provides six oxygen atoms to coordinate with the AgI ions from adjacent Ag-ptz belts to construct a 2D layer. The roles of the ptz ligands with different N-donor sites in the construction of multinuclear clusters and 1D chains are discussed. The electrochem. and photocatalytic properties of the title compounds were investigated as well.

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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Product Details of 14389-12-9. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 5-(4-Pyridyl)-1H-tetrazole, is researched, Molecular C6H5N5, CAS is 14389-12-9, about A solid-state density functional theory investigation of the effect of metal substitution (Metal = Mn, Cd, Co) on the terahertz spectra of isomorphous molecular metal 5-(4-pyridyl)tetrazolato complexes. Author is Pellizzeri, Steven; Witko, Ewelina M.; Korter, Timothy M.; Zubieta, Jon.

The crystal structure and exptl. terahertz spectroscopy of an isomorphous series [Mn(C6H4N5)2(H2O)4]·2H2O (Mn-4PT), [Co(C6H4N5)2(H2O)4]·2H2O (Co-4PT), and [Cd(C6H4N5)2(H2O)4]·2H2O (Cd-4PT) were compared using solid-state d. functional theory (DFT) simulations. The effect of the central metal atom was studied to determine the influence on the low energy lattice and mol. vibrations exhibited at 10-100 cm-1, known as the terahertz (THz) region. Using solid-state DFT the normal modes of these THz vibrations were determined and the mass and size of the metal center has a large effect in this region. Each complex exhibited common vibrational modes involving whole ligand motion around the central metal atom. These vibrations shift to lower frequencies with a drastic mass increase; however, this trend is reversed with the smaller mass change between the Mn and Co due to the stronger Co-N bond compared to the Mn-N bond.

Here is just a brief introduction to this compound(14389-12-9)Product Details of 14389-12-9, more information about the compound(5-(4-Pyridyl)-1H-tetrazole) is in the article, you can click the link below.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 5-(4-Pyridyl)-1H-tetrazole( cas:14389-12-9 ) is researched.Safety of 5-(4-Pyridyl)-1H-tetrazole.Sha, Jing-Quan; Sun, Jing-Wen; Wang, Cheng; Li, Guang-Ming; Yan, Peng-Fei; Li, Meng-Ting; Liu, Ming-Yuan published the article 《Syntheses of POM-templated MOFs containing the isomeric pyridyltetrazole》 about this compound( cas:14389-12-9 ) in CrystEngComm. Keywords: silver pyridyltetrazole polyoxometalate template MOF hydrothermal preparation crystal structure; luminescence silver pyridyltetrazole polyoxometalate template MOF. Let’s learn more about this compound (cas:14389-12-9).

By introducing the isomeric pyridyltetrazole into POMs, four POM-templated MOFs compounds, H[Ag6(2-pytz)4(H2O)4][PW12O40]·6H2O (1), [Ag3(3-pytz)2]2[AgPW12O40] (2), H[KAg7(4-pytz)5][SiW12O40] (3), {H[NaAg7(4-pytz)5(H2O)0.5][GeMo12O40]}2 (4) [pytz = 5-(pyridyl) tetrazolate], were hydrothermally synthesized and characterized by routine methods and single-crystal x-ray crystallog. Due to 2-pytz as a bridging linker and chelator, compound 1 displays a 2D MOF with a void (∼19.1 × 8.8 Å), in which the Keggin anions as sandwich templates locate in the adjacent two voids. In 2, 3-pytz as a shorter radiating linker generates a compacted 2D MOF, in which the Keggin anions as chain templates direct the formation of a stair-like MOF. In the isostructural compounds 3 and 4, 4-pytz as the bridging and radiating linkers form 3D covalent MOFs with larger voids (∼25.3 × 12.5 Å), in which the Keggin anions as double-templates occupy the voids in a “”shoulder-to-shoulder”” mode. In addition, the photoluminescence of the compounds were studied.

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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

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-Aminoquinazolin-4(3H)-one, is researched, Molecular C8H7N3O, CAS is 20198-19-0, about Biological evaluation and molecular docking of substituted quinazolinones as antimicrobial agents.Name: 2-Aminoquinazolin-4(3H)-one.

Antibiotic resistance in the community is a growing public health concern due to the continued emergence of multi drug resistant bacterial strains. In view of this fact, the design and synthesis of newer antibacterials are of immense significance and continue to attract the attention of numerous medicinal chemists. The aim of this study was to investigate the effect of four quinazolinone derivatives (Ia, II, III and IV) on the microbial cell morphol. and genes coded for rRNA subunits. It was extended also to elucidate the effect of the most active derivatives on DNA-gyrase enzyme by performing a mol. docking study. Quinazolinone derivatives revealed good anti-bacterial activities, especially against Gram-pos. strains through their interaction with cell wall and DNA structures. The tested compounds showed moderate activity against fungal strains through affecting the internal structures of fungal cell in addition to studied genes. Compound II was found to be the most active gyrase inhibitor as illustrated by the docking study. Conclusion: The type and position of chem. substituents confer the antimicrobial activity of quinazolinone.

Here is just a brief introduction to this compound(20198-19-0)Name: 2-Aminoquinazolin-4(3H)-one, more information about the compound(2-Aminoquinazolin-4(3H)-one) is in the article, you can click the link below.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

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 Reactivity of anode-generated dialkyl trimethylsilyl phosphite cation radicals, published in 1988-01-31, which mentions a compound: 20198-19-0, Name is 2-Aminoquinazolin-4(3H)-one, Molecular C8H7N3O, Application In Synthesis of 2-Aminoquinazolin-4(3H)-one.

The electrochem. oxidation of diethyltrimethylsilylphosphite and dibutyltrimethylsilylphosphite was studied in the presence of benzene and alkylbenzene using the method of competitive reactions. The assumption that the highly active electrophilic particles, cation radicals of dialkyltrimethylsilylphosphites, are playing role in the electrochem. process was confirmed. The selectivity of the substitution reaction of (RO)2POSiMe3 with alkylbenzene was studied as a function of the R position. A good correlation was observed between electrophilic constants and electrochem. data.

Here is just a brief introduction to this compound(20198-19-0)Application In Synthesis of 2-Aminoquinazolin-4(3H)-one, more information about the compound(2-Aminoquinazolin-4(3H)-one) is in the article, you can click the link below.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

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, Article, Research Support, Non-U.S. Gov’t, Bioorganic & Medicinal Chemistry Letters called Fragment based search for small molecule inhibitors of HIV-1 Tat-TAR, Author is Zeiger, Mirco; Stark, Sebastian; Kalden, Elisabeth; Ackermann, Bettina; Ferner, Jan; Scheffer, Ute; Shoja-Bazargani, Fatemeh; Erdel, Veysel; Schwalbe, Harald; Goebel, Michael W., which mentions a compound: 20198-19-0, SMILESS is O=C1NC(N)=NC2=C1C=CC=C2, Molecular C8H7N3O, Formula: C8H7N3O.

Basic mol. building blocks such as benzene rings, amidines, guanidines, and amino groups have been combined in a systematic way to generate ligand candidates for HIV-1 TAR RNA. Ranking of the resulting compounds was achieved in a fluorimetric Tat-TAR competition assay. Although simple mols. such as phenylguanidine are inactive, few iteration steps led to a set of ligands with IC50 values ranging from 40 to 150 μM. 1,7-Diaminoisoquinoline 17 and 2,4,6-triaminoquinazoline 22 have been further characterized by NMR titrations with TAR RNA. Compound 22 is bound to TAR at two high affinity sites and shows slow exchange between the free ligand and the RNA complex. These results encourage investigations of dimeric ligands built from two copies of compound 22 or related heterocycles.

Here is just a brief introduction to this compound(20198-19-0)Formula: C8H7N3O, more information about the compound(2-Aminoquinazolin-4(3H)-one) is in the article, you can click the link below.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis