Tag: M.W=100-200

Recommanded Product: 14389-12-9. 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 Mesoporous ZnS hollow spheres-catalyzed synthesis of 5-substituted 1H-tetrazoles.

A simple and effective method has been developed for the synthesis of 5-substituted 1H-tetrazoles from sodium azide and different nitriles using mesoporous ZnS hollow spheres (MZHSs) as a catalyst. The heterogeneous catalyst MZHSs with high surface area and fine mesoporous structure was synthesized by the simple solvothermal method without using any surfactants. Compared with ZnS synthesized by precipitation method and com. ZnO, MZHSs show excellent catalytic performance with over 85% yield for most nitriles, which also is easy to be separated from the reaction mixture and reused. The MZHSs catalyst is a good candidate to substitute metal salts or other heterogeneous catalyst and has potential values for industry application.

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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 reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《A Luminescent Rod-Packing Organic-Inorganic Hybrid Framework Based on Copper(I) Cyanide Ribbon and 5-(4-Pyridine)tetrazole Ligand》. Authors are Zhai, Quan-Guo; Chen, Shuang-Qiu; Li, Shu-Ni; Jiang, Yu-Cheng; Hu, Man-Cheng.The article about the compound:5-(4-Pyridyl)-1H-tetrazolecas:14389-12-9,SMILESS:C1(C2=NN=NN2)=CC=NC=C1).Safety of 5-(4-Pyridyl)-1H-tetrazole. Through the article, more information about this compound (cas:14389-12-9) is conveyed.

The hydrothermal reaction of CuCN, K3Fe(CN)6 and 5-(4-pyridine)tetrazole generated a novel three-dimensional organic-inorganic hybrid framework, namely, {Cu3(5PyTAZ)(CN)2}n (1) (5PyTAZ = 5-(4-pyridyl)tetrazolate). X-ray single-crystal diffraction shows that two independent Cu(I) centers are four-coordinate tetrahedral and three-coordinate trigonal geometries, which are connected by μ3-CN groups to form a 1-dimensional [Cu3(CN)2]n inorganic ribbon along the c-axis direction. Each 5PyTAZ ligand links four adjacent inorganic ribbons via its five N-atoms to generate a complex 3-dimensional hybrid structure. If the 1-dimensional Cu(I) cyanide ribbon was regarded as a rod-shape building block, 1 exhibits a simple rod-packing topol. framework. Also, 1 was characterized by x-ray powder diffraction, elemental anal., FTIR, Raman spectra and TG/DTA. Notably, solid-state luminescence measurements indicate that 1 is a potential photoluminescence material.

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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 Novel Inhibitors of Trihydroxynaphthalene Reductase with Antifungal Activity Identified by Ligand-Based and Structure-Based Virtual Screening.Recommanded Product: 20198-19-0.

Curvularia lunata is a dark pigmented fungus that is the causative agent of several diseases in plants and in both immunodeficient and immunocompetent patients. 1,8-Dihydroxynaphthalene-melanin is found in the cell wall of C. lunata and is believed to be the important virulence factor of dematiaceous fungi. Trihydroxynaphthalene reductase is an enzyme of the 1,8-dihydroxynaphthalene-melanin biosynthetic pathway, and it thus represents an emerging target for the development of novel fungicides and antimycotics. In the present study, the authors describe novel inhibitors of trihydroxynaphthalene reductase from C. lunata. These inhibitors were identified by ligand-based three-dimensional similarity searching and docking to a homol.-built model and by subsequent biochem. and antifungal evaluation. Discovery of competitive inhibitors with Ki values in low micromolar and even nanomolar concentration range proves the aplicability of homol.-built model of 3HNR for hit finding by virtual screening methods.

Compound(20198-19-0)Recommanded Product: 20198-19-0 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.

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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 natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 14389-12-9, is researched, SMILESS is C1(C2=NN=NN2)=CC=NC=C1, Molecular C6H5N5Journal, New Journal of Chemistry called Hierarchically porous AlPO-5-based microspheres as heterogeneous catalysts for the synthesis of 5-substituted 1H-tetrazoles via [3+2] cycloaddition, Author is Kong, Dan; Liu, Yanyan; Zhang, Juan; Li, Hongbian; Wang, Xiangyu; Liu, Guangyu; Li, Baojun; Xu, Zheng, the main research direction is tungsten mol sieve preparation WALPO cycloaddition catalyst nitrile azide; tetrazole preparation.Computed Properties of C6H5N5.

The research on the heterogeneous catalytic synthesis of tetrazole derivatives has attracted great attention. In this paper, a tungsten atom-containing AlPO-5 microporous mol. sieve (termed as WAlPO-5) was designed and synthesized by the incorporation of tungsten atoms into the AlPO-5 skeleton with triethylamine as a structure template from pseudoboehmite, H3PO4 and tungstophosphoric acid. The incorporation of tungsten atoms into the AlPO-5 skeleton (aluminophosphate zeolites) has been demonstrated by systematic characterizations. WAlPO-5 can be used as an efficient heterogeneous catalyst for the synthesis of 5-substituted 1H-tetrazoles by [3+2] cycloaddition from nitriles and sodium azide. As a novel heterogeneous catalyst, WAlPO-5 exhibits a high catalytic activity, a superior cycling stability and an excellent substrate applicability. The significant advantages of WAlPO-5, such as the simple procedure and the mild reaction conditions and as an alternative to those corrosive, hazardous and polluting homogeneous catalysts, warrant its potential application in industrial processes. The synthesis of the target compounds was achieved by a reaction of sodium azide with benzonitrile derivatives (aryl nitriles), 4-pyridinecarbonitrile (pyridine derivative). The title compounds thus formed included 5-phenyl-2H-tetrazole derivatives, 4-(2H-tetrazol-5-yl)pyridine.

Compound(14389-12-9)Computed Properties of C6H5N5 received a lot of attention, and I have introduced some compounds in other articles, similar to this compound(5-(4-Pyridyl)-1H-tetrazole), 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

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 5-(4-Pyridyl)-1H-tetrazole(SMILESS: C1(C2=NN=NN2)=CC=NC=C1,cas:14389-12-9) is researched.Product Details of 707-61-9. The article 《Porous Nitrogen Rich Cadmium-Tetrazolate Based Metal Organic Framework (MOF) for H2 and CO2 Uptake》 in relation to this compound, is published in Crystal Growth & Design. Let’s take a look at the latest research on this compound (cas:14389-12-9).

The highly porous nitrogen rich metal organic framework [Cd3(4-TP)6] (Cd-4TP-1) was synthesized solvothermally from the predesigned organic building block 4-tetrazole pyridine (4-TP) and Cd(II) as metal center using DMF as solvent. Cd-4TP-1 has a three-dimensional porous architecture where all the binding sites of Cd(II) are exclusively occupied by the nitrogen atoms from the μ2-tetrazolyl group or the pyridyl functionality of the 4-TP ligands. Cd-4TP-1 has Brunauer-Emmett-Teller (BET) and Langmuir surface areas of 472.2 and 728.6 m2/g, resp., and shows 1.1% H2 (77 K) and 2.7 mmol/g CO2 uptake (273 K).

Compound(14389-12-9)Safety of 5-(4-Pyridyl)-1H-tetrazole received a lot of attention, and I have introduced some compounds in other articles, similar to this compound(5-(4-Pyridyl)-1H-tetrazole), 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

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: 20198-19-0, is researched, SMILESS is O=C1NC(N)=NC2=C1C=CC=C2, Molecular C8H7N3OJournal, Khimiya Geterotsiklicheskikh Soedinenii called Acylation of 2-amino-4-quinazolones unsaturated acyl chlorides, Author is Yun, L. M.; Nazhimov, K. O.; Masharipov, S.; Samiev, R. A.; Makhmudov, S. A.; Kasymova, S. S.; Vergizov, S. N.; V’yunov, K. A.; Shakhidoyatov, Kh. M., the main research direction is acylation aminoquinazolone unsaturated chloride; pyrimidoquinazolinedione; quinazolone amino acylation unsaturated chloride.Safety of 2-Aminoquinazolin-4(3H)-one.

Condensation of quinazolone I by R1CH:CRCOCl (R = Me, R1 = H; R = H, R1 = Me, Ph) in DMF containing Et3N gave 36-70% acylated derivatives II which (R = Me, R1 = H) underwent intramol. cycloaddition at 250-260° to give 43% pyrimidoquinazolinedione III. Addnl. acylations of the 2-Me derivative of I gave 15-49% quinazolones IV.

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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

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 Crystal engineering: Toward intersecting channels from a neutral network with a bcu-type topology, published in 2005-09-19, which mentions a compound: 14389-12-9, Name is 5-(4-Pyridyl)-1H-tetrazole, Molecular C6H5N5, Application of 14389-12-9.

Although the structure of the body centered cubic (bcu) net is commonly found in textbooks, its eight-connected topol. is extremely rare in metal-organic frameworks owing to severe geometric requirements. The 1st example of a highly porous, neutral bcu-type framework, {[Cu3Cl2L4(H2O)2].3DMF.5H2O}n (I), assembled from a unique eight-connected tricopper cluster and a 5-(4-pyridyl)tetrazolate ligand (L-) as linker is reported. I is orthorhombic, space group , Z = 2, R1 = 0.0725, wR2 = 0.0399.

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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, Cun-Kuan; Li, Xiao-Yan published an article about the compound: 5-(4-Pyridyl)-1H-tetrazole( cas:14389-12-9,SMILESS:C1(C2=NN=NN2)=CC=NC=C1 ).Category: chiral-nitrogen-ligands. 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:14389-12-9) through the article.

The title three-dimensional coordination polymer, [Cu2Cl(C6H4N5)]n, is the product of the hydrothermal reaction of CuCl2·2H2O and 5-(4-pyridyl)-1H-tetrazole (4-Hptz). The two independent CuI ions are coordinated in distorted tetrahedral and distorted trigonal coordination environments. In the unique 5-(4-pyridyl)-1H-tetrazolate ligand, the dihedral angle between the pyridine and tetrazole rings is 17.3 (2)°. Crystallog. data are given.

From this literature《Poly[μ-chlorido-[μ4-5-(4-pyridyl)tetrazolato]dicopper(I)]》,we know some information about this compound(14389-12-9)Category: chiral-nitrogen-ligands, but this is not all information, there are many literatures related to this compound(14389-12-9).

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 natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 20198-19-0, is researched, SMILESS is O=C1NC(N)=NC2=C1C=CC=C2, Molecular C8H7N3OJournal, Chemical Physics called Electronic spectra of some pterins and deazapterins, Author is Wormell, Paul; Gready, Jill E., the main research direction is electron spectra pterin deazapterin; tautomerism electron spectra pterin deazapterin; protonation electron spectra pterin deazapterin.COA of Formula: C8H7N3O.

The electronic absorption spectra of some derivatives of pterin and N5-deazapterin are analyzed using the CNDO/S-CI method, including allowance for solvent shifts. These calculations give good agreement with the spectra, which may be assigned to a group of π*←π transitions. There are some differences between calculated values for gas-phase and solution models but their general level of conformity with experiment is similar. Band shifts caused by Me substitution, protonation and replacement of ring nitrogens are investigated, and a number of structural and spectroscopic problems are addressed. The spectral predictions agree well with exptl. assignments for tautomeric forms and protonation sites for known compounds, and predictions are made for the spectra of N8-deazapterin and N5,N8-dideazapterin which have not been reported.

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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

Related Products 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 New Main Group Metal Coordination Polymer: Synthesis, Structure, and Dielectric Constant Property of [Na(C6H4N5)(H2O)2]n. Author is Fu, Da-Wei; Ge, Jia-Zhen; Zhang, Yi; Ye, Heng-Yun.

The reaction of NaOH with 4-(2H-tetrazol-5-yl)pyridine affords the first tetrazole-pyridine sodium coordination polymer with chain structure, [Na(C6H4N5)(H2O)2]n (1). The compound could be characterized by single-crystal x-ray diffraction anal. The temperature dependence of dielec. permittivity remains unchanged almost within the measured temperature range of 80 K to 270 K at 1 MHz, and the frequency dependence of the permittivity showed rapidly drops from 31.5 to 4.3 within the measured frequency range of 200 to 1 MHz at room temperature

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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