Month: April 2022

Wang, Cong; Xing, Na; Feng, Wenjing; Guo, Sihan; Liu, Mingyang; Xu, Yue; You, Zhonglu published the article 《New mononuclear dioxidomolybdenum(VI) complexes with hydrazone ligands: Synthesis, crystal structures and catalytic performance》. Keywords: preparation crystal structure mononuclear dioxidomolybdenum hydrazone complex; thermal decomposition mononuclear dioxidomolybdenum hydrazone complex; cyclohexane oxidation mononuclear dioxidomolybdenum hydrazone complex catalyst.They researched the compound: Bis(acetylacetonato)dioxomolybdenum(VI)( cas:17524-05-9 ).Name: Bis(acetylacetonato)dioxomolybdenum(VI). 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:17524-05-9) here.

Three new dioxomolybdenum (VI) complexes, [MoO2L1(MeOH)] (1), [MoO2L2(MeOH)] (2) and [MoO2L3(H2O)]·EtOH (3), where L1, L2 and L3 are the dianionic form of N’-(2-hydroxybenzylidene)-3-methylbenzohydrazide, 4-bromo-N’-(2-hydroxybenzylidene)benzohydrazide and 2-bromo-N’-(2-hydroxy benzylidene)benzohydrazide, resp., were prepared and characterized by IR, UV-visible and NMR spectra, as well as single crystal x-ray diffraction. The Mo atoms in the complexes are in octahedral coordination, with the ONO donor set of the hydrazone ligands, O atoms of the solvents, and two oxo groups. Crystals of the complexes are stabilized by hydrogen bonds of types O-H···N and O-H···O. Moreover, the catalytic properties of complexes 1-3 are compared in cyclohexane oxidation Sebacic acid and FeCl3 could promote the catalytic activities of the complexes.

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Reference:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

SDS of cas: 1445086-17-8. 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: P(t-Bu)3 Pd G3, is researched, Molecular C25H40NO3PPdS, CAS is 1445086-17-8, about Potassium Trimethylsilanolate Enables Rapid, Homogeneous Suzuki-Miyaura Cross-Coupling of Boronic Esters. Author is Delaney, Connor P.; Kassel, Vincent M.; Denmark, Scott E..

Herein, a mild and operationally simple method for the Suzuki-Miyaura cross-coupling of boronic esters is described. Central to this advance is the use of the organic-soluble base, potassium trimethylsilanolate, which allows for a homogeneous, anhydrous cross-coupling. The coupling proceeds at a rapid rate, often furnishing products in quant. yield in less than 5 min. By applying this method, a >10-fold decrease in reaction time was observed for three published reactions which required >48 h to reach satisfactory conversion.

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Nitrile – Wikipedia,
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Category: nitriles-buliding-blocks. 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: 5-Chloro-1-methyl-4-nitroimidazole, is researched, Molecular C4H4ClN3O2, CAS is 4897-25-0, about Chloronitroimidazoles as radiosensitizers of hypoxic cells in vitro. Author is Widel, M.; Watras, J.; Suwinski, J.; Salwinska, E..

In vitro studies in V79-379A cells on the radiosensitizing efficiency, cytotoxicity, and reactivity with blood thiols of a series of chloronitroimidazoles (I where R1 = Me or H, R2 = Cl, H, or Me, R4 = NO2, H, Cl, NO2H, or NO2Cl, and R5 = H, Cl, NO2, NO2H, NO2Cl) are presented. The derivatives of 4-nitroimidazole substituted in the 5 position with Cl show higher radiosensitizing efficiency to γ-rays than one might expect from their reduction potential. At the same time they are extremely toxic, especially for aerobic cells. It is thought that the high biol. activity of ortho-substituted 4-nitroimidazoles is connected with their considerable chem. reactivity towards thiols and suppression of those natural protective compounds in the cells. The corresponding 5-nitro isomers are ∼10-fold weaker sensitizers, and simultaneously much less cytotoxic, either in aerobic or in hypoxic conditions. The chloro-4(5)-nitroimidazoles are unsubstituted at N-1 and ionizable in aqueous solution are relatively weaker but at the same time less toxic radiosensitizers. The potential application in radiotherapy is indicated for those chloronitroimidazoles which show low aerobic cytotoxicity, moderate radiosensitizing ability, and no reactivity towards thiols. On the basis of the in vitro study, 1-methyl-2-chloro-4-nitroimidazole (P13) has been selected for screening in vivo.

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Nitrile – Wikipedia,
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Name: 2,4,5-Triphenylimidazole. 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: 2,4,5-Triphenylimidazole, is researched, Molecular C21H16N2, CAS is 484-47-9, about Sulfonated Fe3O4@PVA superparamagnetic nanostructure: design, in-situ preparation, characterization and application in the synthesis of imidazoles as a highly efficient organic-inorganic Bronsted acid catalyst. Author is Maleki, Ali; Rahimi, Jamal; Valadi, Kobra.

A new approach for in-situ preparation of Fe3O4@PVA nanostructure as well as its sulfonation was investigated. Then, the functional group of the prepared nanocatalyst was characterized by Fourier transform IR (FT-IR) spectroscopy. The size and morphol. of the nanoparticles were tested by using SEM images. The presence of constructive elements in the nanocomposites was confirmed by energy dispersive X-ray (EDX) anal. To better insight, the structure and magnetic properties of the prepared nanostructure were studied by X-ray diffraction (XRD) pattern and vibrating sample magnetometer (VSM) anal. Thermal stability and weight loss for the nanostructure composition at each step of weight change were screened by thermogravimetric anal. (TGA). Finally, the prepared nanocomposite structure was confirmed by transmission electron microscope (TEM) image. Then, for the first time, Fe3O4@PVA sulfonic acid-based superparamagnetic nanocatalyst was studied for the synthesis of 2,4,5-triarylimidazoles I (R = Ph, 2,4-dichlorophenyl, 2-thienyl, etc.) via a one-pot three-component condensation reaction starting from ammonium acetate, aldehydes RCHO and benzil or benzoin. Due to high magnetic property of the catalyst, it was easily recyclable by a magnet at least for ten runs without any significant reduction in the catalytic activity.

Although many compounds look similar to this compound(484-47-9)Name: 2,4,5-Triphenylimidazole, numerous studies have shown that this compound(SMILES:C1(C2=CC=CC=C2)=NC(C3=CC=CC=C3)=C(C4=CC=CC=C4)N1), has unique advantages. If you want to know more about similar compounds, you can read my other articles.

Reference:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

SDS of cas: 117918-23-7. 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: (R)-3-(tert-Butoxycarbonyl)-5,5-dimethylthiazolidine-4-carboxylic acid, is researched, Molecular C11H19NO4S, CAS is 117918-23-7, about Design and synthesis of several small-size HTLV-I protease inhibitors with different hydrophilicity profiles. Author is Nguyen, Jeffrey-Tri; Kato, Keiko; Hidaka, Koushi; Kumada, Henri-Obadja; Kimura, Tooru; Kiso, Yoshiaki.

The human T cell leukemia/lymphotropic virus type 1 (HTLV-I) is clin. associated with adult T cell leukemia/lymphoma, HTLV-I associated myelopathy/tropical spastic paraparesis, and a number of other chronic inflammatory diseases. To stop the replication of the virus, we developed highly potent tetrapeptidic HTLV-I protease inhibitors. In a recent X-ray crystallog. study, several of our inhibitors could not form co-crystal complexes with the protease due to their high hydrophobicity. In the current study, we designed, synthesized and evaluated the HTLV-I protease inhibition potency of compounds with hydrophilic end-capping moieties with the aim of improving pharmaceutic and pharmacokinetic properties.

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Reference:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Electric Literature of C4H4ClN3O2. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 5-Chloro-1-methyl-4-nitroimidazole, is researched, Molecular C4H4ClN3O2, CAS is 4897-25-0, about Research in the imidazole series. 96. Reaction of 1-methyl-4-nitro-5-chloroimidazole with phenols, naphthols, and 8-hydroxyquinoline. Author is Reznichenko, L. A.; Gireva, R. N.; Kochergin, P. M.; Aleksandrova, E. V..

By reactions of 1-methyl-4-nitro-5-chloroimidazole with 4-nitrophenol, α- and β-naphthols, and 8-hydroxyquinoline, a number of 1-methyl-4-nitro-5-[aryl(or heteroaryl)oxy]imidazoles have been obtained. With aminophenols under analogous conditions, 1-methyl-4-nitro-5-[(hydroxyphenyl)amino]imidazoles have been obtained.

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Reference:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Reference of 2,4,5-Triphenylimidazole. 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: 2,4,5-Triphenylimidazole, is researched, Molecular C21H16N2, CAS is 484-47-9, about One-Pot Synthesis of Polysubstituted Imidazoles Based on Pd(OAc)2/Ce(SO4)2/Bi(NO3)3 Trimetallic Cascade of Decarboxylation/Wacker-Type Oxidation/Debus-Radziszewski Reaction.

A novel and highly efficient one-pot synthesis of polysubstituted imidazoles I (R1 = H, 2-NO2, 4-Me, etc.; R2 = H, benzyl, 4-methylphenyl, etc.) from α-hydroxyphenylacetic acids R1C6H4CH(OH)CO2H, diphenylacetylene, and amines R2NH2 has been achieved by Pd(OAc)2/Ce(SO4)2/Bi(NO3)3 trimetallic catalytic system. A series of control experiments showed that this overall reaction occurs through a one-pot cascade process combining the steps of decarboxylation of α-hydroxyphenylacetic acids, Wacker-type oxidation of diphenylacetylene, and Debus-Radziszewski annulation of aryl aldehydes and benzil generated in situ, as well as amines.

Although many compounds look similar to this compound(484-47-9)Reference of 2,4,5-Triphenylimidazole, numerous studies have shown that this compound(SMILES:C1(C2=CC=CC=C2)=NC(C3=CC=CC=C3)=C(C4=CC=CC=C4)N1), has unique advantages. If you want to know more about similar compounds, you can read my other articles.

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Nitrile – Wikipedia,
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Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 484-47-9, is researched, Molecular C21H16N2, about SO3H-functionalized Zeolite-Y as an Efficient Nanocatalyst for the Synthesis of N-benzimidazole-2-aryl-4-thiazolidinones and tri-substituted Imidazoles, the main research direction is sulfonic acid functionalized zeolite Y nanocatalyst preparation surface structure; aminobenzimidazole benzaldehyde thioglicolic acid zeolite nanocatalyst cyclocondensation green chem; benzoimidazolyl phenyl thiazolidinone preparation; benzil benzaldehyde ammonium acetate sulfonic acid functionalized zeolite cyclocondensation; triphenyl imidazole preparation green chem; 1,3-thiazolidin-4-one; Sulfonated zeolite; aromatic aldehydes; heterogeneous nanocatalyst; imidazole; solid acid..Product Details of 484-47-9.

SO3H-functionalized zeolite-Y was prepared and used as a catalyst for the synthesis of 2-aryl-N-benzimidazole-4-thiazolidinones and tri-substituted imidazoles at ambient conditions. High reaction rates, elimination toxic solvent, simple exptl. procedure and reusability of the catalyst were the important features of this protocol. The SO3H-functionalized zeolite-Y was characterized by FT-IR, FESEM, EDX, XRF and BET. Different kinds of aromatic aldehydes were converted to the corresponding of products with good to excellent yields.

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Nitrile – Wikipedia,
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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 Stand-alone CdS nanocrystals for photocatalytic CO2 reduction with high efficiency and selectivity, published in 2021-06-09, which mentions a compound: 4556-23-4, Name is Pyridine-4-thiol, Molecular C5H5NS, Application of 4556-23-4.

The development of a cost-effective photocatalyst is highly anticipated to achieve efficient photocatalytic CO2 reduction with superior selectivity, which is still facing the lack of valid settlements. Herein, 4-mercaptopyridine (PD) as the building block of a capping ligand is tightly decorated on the surface of CdS nanocrystals (CdS-PD) using a facile ligand-exchange strategy, to exploit a cost-effective photocatalyst for photocatalytic CO2 reduction without any cocatalysts. The conjugated structure of PD can facilitate the delocalization of photogenerated electrons in CdS nanocrystals, bringing forth an improved charge separation efficiency. More importantly, N-protonated PD can enable the easy formation of a six-membered ring intermediate with CO2 assisted by water, which can serve as the efficient active site to achieve photocatalytic CO2 reduction In the absence of a cocatalyst, stand-alone CdS-PD nanocrystals exhibit an excellent CO yield of 20.35 mmol g-1 h-1 concomitant with a high selectivity of 95.3% for the CO2-to-CO conversion under visible light, which are remarkably superior than those of CdS nanocrystals possessing traditional alkyl-chain and other conjugated capping ligands.

Although many compounds look similar to this compound(4556-23-4)Application of 4556-23-4, numerous studies have shown that this compound(SMILES:SC1=CC=NC=C1), has unique advantages. If you want to know more about similar compounds, you can read my other articles.

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Nitrile – Wikipedia,
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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Infrared spectra of 2,9-dimethyl-1,10-phenanthroline, its hydrates and acid perchlorate》. Authors are Grigg, E. C. M.; Hall, J. R.; Plowman, R. A..The article about the compound:2,9-Dimethyl-1,10-phenanthroline hemihydratecas:34302-69-7,SMILESS:CC1=CC=C2C=CC3=CC=C(C)N=C3C2=N1.[H]O[H].CC4=CC=C5C=CC6=CC=C(C)N=C6C5=N4).Formula: C28H26N4O. Through the article, more information about this compound (cas:34302-69-7) is conveyed.

Bands, 1610-1545 cm.-1, are attributed to stretching vibrations within the phenanthroline ring system. The in-phase out-of-plane motion of the ring H atoms is associated with intense absorption at 845 cm.-1 There is a strong band at 728 cm.-1, not due to out-of-plane CH deformation. The strongest bonds are shifted in the perchlorate spectrum.

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Reference:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts