Tag: M.W:100-200

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 Phosphorescent Ir (III) complexes as cellular staining agents for biomedical molecular imaging, published in 2020-08-01, which mentions a compound: 1008-89-5, Name is 2-Phenylpyridine, Molecular C11H9N, SDS of cas: 1008-89-5.

A review. Phosphorescent Ir(III) complexes have attracted abundant attention in biomedical research due to their wide ranging properties and organelle specific intracellular imaging. Various types of Ir (III) complexes have been synthesized for visualization and monitoring of subcellular organelles and diagnosis of cancer. The aim of this review is to evaluate the progress of the phosphorescent Ir(III) complexes in bioimaging applications. We intend to highlight the use of Ir(III) complexes for staining the subcellular organelles, providing phosphorescence lifetime imaging microscopy, two photon and hypoxic tumor bioimaging.

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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Formula: C12H9N3. 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: 2-(Pyridin-4-yl)-1H-benzo[d]imidazole, is researched, Molecular C12H9N3, CAS is 2208-59-5, about Synthesis and crystal structure of a novel tetranuclear zinc(II) coordination polymer [Zn4(o-bda)4(p-pbim)4]n. Author is Yang, Yan; Zeng, Ming-Hua; Zhang, Lai-Jun; Liang, Hong.

A novel tetranuclear zinc(II) coordination polymer [Zn4(o-bda)4(p-pbim)4]n 1 (p-pbim = 4-pyridylbenzimidazole, o-bda2- = o-phenylenediacetic acid dianion) was synthesized by a hydrothermal method and characterized by elemental anal., IR and x-ray single-crystal diffraction. The title complex crystallizes in monoclinic, space group of P21/n with a 14.231(1), b 16.257(1), c 16.794(1) Å, β 100.26(1)°, Z = 8, dc = 1.573 g/cm3, μ = 1.321 mm-1, F(000) = 1856, R = 0.0420 and Rw = 0.111. The Zn(1) atom assumes a distorted trigonal bipyramidal geometry, involving three carboxyl O atoms from two different o-bda ligands and two N atoms from two p-pbim ligands. The Zn(2) atom is coordinated by two oxygens from two distinct bda2- anions and two nitrogen atoms from two p-pbim ligands to form a distorted tetrahedral geometry. The Zn(II) atoms are alternately interlinked by o-bda ligands in bis-monodentate or chelating-bidentate and monodentate modes into one-dimensional undulate chains along axis c with the adjacent Zn…Zn distances of 8.32 and 8.47 Å. Such neighboring chains are further extended into a 1D bi-chain structure with two different subrings A and B, which are 32- and 14-membered rings through interchain p-pbim ligands. There exists a 2D supramol. network linked by intermol. hydrogen-bonding interactions between the uncoordinated carboxylate O(4) atom or coordinated carboxylate O(7) atom and the uncoordinated imidazolyl N(2) and N(5) atoms with the O…N distances to be 2.695 and 2.807 Å.

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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

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.Chen, Shu-Jie; Chen, Guo-Shu; Deng, Tao; Li, Jia-Hui; He, Zhi-Qing; Liu, Li-Shan; Ren, Hai; Liu, Yun-Lin researched the compound: 2-Phenylpyridine( cas:1008-89-5 ).Product Details of 1008-89-5.They published the article 《1,2-Dicarbofunctionalization of Trifluoromethyl Alkenes with Pyridinium Salts via a Cycloaddition/Visible-Light-Enabled Fragmentation Cascade》 about this compound( cas:1008-89-5 ) in Organic Letters. Keywords: pyridine preparation cycloaddition; trifluoromethyl alkene pyridinium salt preparation. We’ll tell you more about this compound (cas:1008-89-5).

Although trifluoromethyl alkenes have great synthetic potential, their 1,2-difunctionalization has been a challenge. In this Letter, authors disclose the first 1,2-dicarbofunctionalization of trifluoromethyl alkenes with pyridinium salts via a cascade process involving a base-promoted [3+2] cycloaddition followed by a visible-light-mediated Norrish-type-II fragmentation. This protocol allows for the formation of pyridines bearing a trifluoromethyl-substituted quaternary center in moderate to excellent yields under mild conditions.

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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

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.Zhou, Enmu; Jin, Jianzhong; Zheng, Kai; Zhang, Letian; Xu, Hao; Shen, Chao researched the compound: 2-Phenylpyridine( cas:1008-89-5 ).Recommanded Product: 1008-89-5.They published the article 《Novel Recyclable Pd/H-MOR Catalyst for Suzuki-Miyaura Coupling and Application in the Synthesis of Crizotinib》 about this compound( cas:1008-89-5 ) in Catalysts. Keywords: zeolite support palladium nanocatalyst preparation surface area green chem; haloarene phenyl boronic acid palladium nanocatalyst Suzuki Miyaura coupling; phenyl arene preparation. We’ll tell you more about this compound (cas:1008-89-5).

In this paper, an effective ultrasound method for the synthesis of Pd/H-MOR, which was used as a catalyst in the Suzuki-Miyaura coupling of aryl halides with phenylboronic acids was reported. The structure and morphol. of the as-prepared catalysts were fully characterized by X-ray diffraction (XRD), N2 sorption isotherms, SEM (SEM) and an inductively coupled plasma-at. emission spectrometer (ICP-AES). The advantages of Pd/H-MOR in the coupling reaction are green solvents, high yields, absence of ligands and recyclability. The catalysts were easily reused at least ten times without significant deterioration in catalytic activity. In addition, this protocol was used in the marketed anti-tumor drug crizotinib synthesis.

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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

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, Angewandte Chemie, International Edition called Palladium-Catalyzed Electrophilic Functionalization of Pyridine Derivatives through Phosphonium Salts, Author is Che, Yuan-Yuan; Yue, Yanni; Lin, Ling-Zhi; Pei, Bingbing; Deng, Xuezu; Feng, Chao, which mentions a compound: 1008-89-5, SMILESS is C1(C2=CC=CC=C2)=NC=CC=C1, Molecular C11H9N, Safety of 2-Phenylpyridine.

Herein, we report a highly efficient and practical method for pyridine-derived heterobiaryl synthesis through palladium-catalyzed electrophilic functionalization of easily available pyridine-derived quaternary phosphonium salts. The nice generality of this reaction was goes beyond arylation, enabling facile incorporation of diverse carbon-based fragments, including alkenyl, alkynyl, and also allyl fragments, onto the pyridine core. Notably, the silver salt additive is revealed to be of vital importance for the success of this transformation and its pivotal role as transmetallation mediator, which guarantees a smooth transfer of pyridyl group to palladium intermediate, is also described.

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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Liu, Hai-Yan; Yang, Jin; Liu, Ying-Ying; Ma, Jian-Fang published the article 《pH-dependent assembly of two inorganic-organic hybrid compounds based on octamolybdates: an unusual intercalated layer and a 3D 4-connected framework》. Keywords: copper pyridylbenzimidazole octamolybdate preparation layered framework pH effect; crystal structure copper pyridylbenzimidazole octamolybdate layered framework; cyclic voltammetry copper pyridylbenzimidazole octamolybdate layered framework.They researched the compound: 2-(Pyridin-4-yl)-1H-benzo[d]imidazole( cas:2208-59-5 ).COA of Formula: C12H9N3. 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:2208-59-5) here.

Two novel inorganic-organic hybrid compounds based on octamolybdates, namely, [Cu(H2L)2(γ-Mo8O26)]·(Mo6O19)·2H2O (1) and [Cu(H2L)(γ-Mo8O26)(H2O)2]·5H2O (2), where L = 1,1′-(1,5-pentanediyl)bis[2-(4-pyridyl)benzimidazole], were successfully synthesized at different pH values under hydrothermal conditions. Compound 1, which is hydrothermally prepared at pH ≈ 3.5, exhibits an entirely new type of intercalated layer. The nanosized hexamolybdate anions as guests are introduced into the layers. When the pH value is adjusted to 2, a structurally-different complex 2 was obtained. Compound 2 shows a unique 3-dimensional 4-connected framework constructed by inorganic layers and H2L2+ ligands as bridges. The two compounds were characterized by elemental analyses, IR spectra and TGA. The electrochem. properties of 1-modified carbon paste electrode (CPE) also were studied in 1 M H2SO4 aqueous solution

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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 2-(Pyridin-4-yl)-1H-benzo[d]imidazole(SMILESS: C1(C2=CC=NC=C2)=NC3=CC=CC=C3N1,cas:2208-59-5) is researched.SDS of cas: 76-60-8. The article 《An advantageous synthesis of 2-substituted benzimidazoles using polyphosphoric acid. 2-(Pyridyl)-1H-benzimidazoles, 1-alkyl-(1H-benzimidazol-2-yl)pyridinium salts, their homologs and vinylogs.》 in relation to this compound, is published in Synthesis. Let’s take a look at the latest research on this compound (cas:2208-59-5).

The title benzimidazoles I [R = H, Me, X = (CH2)n, (E)-CH:CH, n = 0,1] were prepared by a highly efficient one-pot procedure, cyclodehydration of the corresponding accessible carboxylic acids and 1,2-arylenediamines using polyphosphoric acid as the catalyst and solvent in a condensation of the type found in the Phillips benzimidazole synthesis. The method was adapted and proved to be extremely useful for 1-alkyl-(1H-benzimidazol-2-yl)pyridinium tetrafluoroborates with a methylene and vinylene interannular moiety.

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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Safety of 2-Phenylpyridine. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 2-Phenylpyridine, is researched, Molecular C11H9N, CAS is 1008-89-5, about Highly Chemoselective Deoxygenation Of N-Heterocyclic N-Oxides Using Hantzsch Esters As Mild Reducing Agents. Author is An, Ju Hyeon; Kim, Kyu Dong; Lee, Jun Hee.

A highly chemoselective room-temperature deoxygenation method applicable to various functionalized N-heterocyclic N-oxides via visible light-mediated metallaphotoredox catalysis using Hantzsch esters as the sole stoichiometric reductant to afford deoxygenated N-heterocycles I [R = 6-OMe, 6-Cl, 2-Ph, etc.], II [R1 = H, 5-Br; X = CH, N] and III [R2 = 3-Ph, 2,6-Cl2, pyridin-2-yl, etc.] were reported. Despite the feasibility of catalyst-free conditions, most of these deoxygenations could be completed within a few minutes using only a tiny amount of a catalyst. This technol. also allowed for multigram-scale reactions even with an extremely low catalyst loading of 0.01 mol %. The scope of this scalable and operationally convenient protocol encompassed a wide range of functional groups, such as amides, carbamates, esters, ketones, nitrile groups, nitro groups and halogens, which provided access to the corresponding compounds I, II and III in good to excellent yields (an average of an 86.8% yield for a total of 45 examples).

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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

Electric Literature of C12H9N3. 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-(Pyridin-4-yl)-1H-benzo[d]imidazole, is researched, Molecular C12H9N3, CAS is 2208-59-5, about The loading of coordination complex modified polyoxometalate nanobelts on activated carbon fiber: a feasible strategy to obtain visible light active and highly efficient polyoxometalate based photocatalysts. Author is Lu, Tingting; Xu, Xinxin; Li, Huili; Li, Zhenyu; Zhang, Xia; Ou, Jinzhao; Mei, Mingliang.

To enhance the photocatalytic properties of coordination complex modified polyoxometalates (CC/POMs) in the visible light region, its nanobelts (CC/POMNBs) were loaded on activated carbon fiber (ACF) through a simple colloidal blending process. The resulting coordination complex modified polyoxometalate nanobelts loaded activated carbon fiber composite materials (CC/POMNBs/ACF) exhibited dramatic photocatalytic activity for the degradation of rhodamine B (RhB) under visible light irradiation Optical and electrochem. methods illustrated the enhanced photocatalytic activity of CC/POMNBs/ACF, which originates from the high separation efficiency of the photogenerated electrons and holes on the interface of the CC/POMNBs and ACF, which results from the synergistic effects between them. In the composite material, the role of ACF could be described as a photosensitizer and a good electron transporter. Furthermore, the influence of the mass ratio between the CC/POMNBs and ACF on the photocatalytic performance of the resulting composite material was discussed, and an ideal value to obtain highly efficient photocatalysts was obtained. The results suggested that the loading of CC/POMNBs on the surface of ACF would be a feasible strategy to enhance their photocatalytic activity.

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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles

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.Li, Wentao; Miao, Tiezheng; Wang, Baowen; Liu, Jiaxiang; Lu, Xingqiang; Fu, Guorui; Feng, Weixu; Wong, Wai-Yeung researched the compound: 2-Phenylpyridine( cas:1008-89-5 ).Recommanded Product: 1008-89-5.They published the article 《C1-Symmetric [Ir(C^N1)(C^N2)(N^O)]-tris-heteroleptic Ir(III)-complexes with a horizontal orientation for efficient near-infrared (NIR) polymer light-emitting diodes (PLEDs)》 about this compound( cas:1008-89-5 ) in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices. Keywords: polymer light emitting diode heteroleptic iridium complex. We’ll tell you more about this compound (cas:1008-89-5).

Using conventional fac-[Ir(C^N)3]-homoleptic or [Ir(C^N)2(L^X)]-bis-heteroleptic iridium(III)-complexes with NIR-phosphorescence (NIR = near IR) as dopants, the realization of reliable NIR-OLEDs/PLEDs (organic/polymer light-emitting diodes) with high performance remains a real challenge. In this study, taking Hqibt (1-(benzo[b]-thiophen-2-yl)-isoquinoline) as the HC^N1 ligand, Hppy ((phenyl-4-yl)pyridine) as the HC^N2 ligand and Br-Hpic (5-Br-picolinic acid) or Hpic (picolinic acid) as the N^O-ancillary, two novel C1-sym. [Ir(C^N1)(C^N2)(N^O)]-tris-heteroleptic iridium(III)-complexes [Ir(iqbt)(ppy)(pic)] (1) and [Ir(iqbt)(ppy)(Br-pic)] (2) are molecularly designed, resp., where large TDM (transition dipole moment) and strengthened 3MLCT (metal-to-ligand charge transfer) effects are established to afford their good NIR-phosphorescent efficiency (ΦPL = 0.27 for 1 (λem = 698 nm); 0.21 for 2 (λem = 696 nm)). Moreover, in their doped EMLs (emitting layers), a preferentially horizontal orientation of the TDMs is promoted, due to which, the NIR-PLEDs-1-2 exhibit an attractively high efficiency (ηmaxEQE = 3.1-4.7%; λem = 698 nm) as well as an almost negligible (<5%) efficiency roll-off. This finding means the C1-sym. [Ir(C^N1)(C^N2)(N^O)]-tris-heteroleptic Ir(III)-complexes show potential as low-cost, large-area and scalable NIR-PLEDs. There are many compounds similar to this compound(1008-89-5)Recommanded Product: 1008-89-5. if you want to know more, you can check out my other articles. I hope it will help you，maybe you’ll find some useful information.

Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles