Tag: M.W=100-150

Thimiopoulos, A. published the artcileAsymmetric phthalocyanines (A3B type) containing aminophenoxy and hydroxyphenyl-diazenyl-phenoxy substituents, Recommanded Product: Phthalonitrile, the main research area is transition metal phthalocyanine complex preparation fluorescence electrochem; DFT mol structure transition metal phthalocyanine complex.

In this research new asym. metal-phthalocyanine complexes (A3B-type), with Zn2+, Co2+ and Ru2+, bearing aminophenoxy and hydroxyphenyl-diazenyl-phenoxy substituents, were synthesized. The synthetic route to asym. Pcs (A3B-type), based on ring expansion method is refined. The photophys. and electrochem. properties of the new phthalocyanines were investigated. In addition to this investigation, a comparative study took place on the effect of the expansion of conjunction on properties of the MPc compound Also, the effect of pH to the ground state electronic absorption spectra of compounds bearing hydroxyphenyl-diazenyl-phenoxy substituents was also studied. Theor. studies (DFT) were also carried out to support the corresponding exptl. results.

Inorganica Chimica Acta published new progress about Electrochemical oxidation. 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, Recommanded Product: Phthalonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Flores, Soraya Y. published the artcileFluorinated Iron and Cobalt Phthalocyanine Nanowire Chemiresistors for Environmental Gas Monitoring at Parts-per-Billion Levels, Application of Phthalonitrile, the main research area is fluorinated iron cobalt phthalocyanine nanowire gas sensor environmental monitoring.

Herein, a single-step production for the development of gas sensing devices from unsubstituted and hexadecafluorinated metal phthalocyanines (MPc, M = Fe2+ and Co2+) is explained. The preparation of sensor devices by the direct growth of nanowires on interdigitated electrodes by the vapor transport of the synthesized MPc precursors is discussed, emphasizing a single-step approach. Results using as-prepared devices for the detection of NH3 and NO2 in the ppb range are shown. In agreement with similar MPc sensing materials, response and recovery times fitted using a double-exponential model gave two rate constants: a short one, on the order of minutes for concentrations above 500 ppb, and a long one, on the order of hours. These rate constants are suitable for environmental monitoring of gases in recovery zones, where longer exposure times are critical in the sampling process. Our F16FePc-NW sensor prototypes show a ~10% normalized response toward NH3 at 40 ppb for a measuring time of ~2.5 h at room temperature and measurable responses to concentrations as low as 5 ppb, rendering them applicable to environmental studies.

ACS Applied Nano Materials published new progress about Air pollution monitoring. 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, Application of Phthalonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Cheng, Wenchen published the artcileTBN-Catalyzed Dehydrative N-Alkylation of Anilines with 4-Hydroxybutan-2-one, Formula: C7H6N2, the main research area is aminoketone green preparation; aniline hydroxybutanone dehydrative alkylation tert butyl nitrite catalyst.

An efficient protocol was developed for the dehydrative N-alkylation of anilines with 4-hydroxybutan-2-one using TBN as catalyst in presence of TEMPO, which was different than TEMPO/TBN catalyzed oxidation reactions. A range of anilines reacted successfully with 4-hydroxybutan-2-one to generate the β-aminoketones RNHCH2CH2C(O)CH3 [R = Ph, 4-FC6H4, 3,4-di-ClC6H3, etc.] in good yields. Mechanistic studies revealed that this reaction most possibly proceeded through aza-Michael addition Water was the only byproduct, making it more environmentally friendly. The gram-scale reactions verified synthetic practicality of this protocol.

European Journal of Organic Chemistry published new progress about Alkylation (dehydrative). 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Formula: C7H6N2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Serup, Jorgen published the artcileIdentification of pigments related to allergic tattoo reactions in 104 human skin biopsies, HPLC of Formula: 1885-29-6, the main research area is chronic allergy skin biopsy red tattoo pigment metal; Pigment Red 170/210; Pigment Red 22; allergy; nickel; pigments; tattoo reaction.

Background : Red tattoos are prone to allergic reactions. The identity of the allergen(s) is mostly unknown. Objectives : Chem. anal. of human skin biopsies from chronic allergic reactions in red tattoos to identify culprit pigment(s) and metals. Material and methods : One hundred four dermatome biopsies were analyzed by matrix-assisted laser desorption/ionization tandem mass spectrometry (MALDI-MS/MS) for identification of commonly used organic pigments. Metal concentrations were assessed by inductively coupled plasma (ICP)-MS and x-ray fluorescence (XRF). Fourteen patients had cross-reactions in other red tattoos. Results : In total, the identified pigments were mainly azo Pigment Red (P.R.) 22 (35%), P.R. 210 (24%), P.R. 170 (12%), P.R. 5 (0.9%), P.R. 112 (0.9%), and Pigment Orange (P.O.) 13 (11%). P.R. 122 (0.9%) and Pigment Violet (P.V.) 23 (8%) were also common. P.R. 22, P.R. 170, and P.R. 210 also dominated in patients with cross-reactions. In 22% of the biopsies, no red pigment was detected. Element anal. indicated the presence of the sensitizers nickel and chromium. Conclusions : P.R. 22, P.R. 170, and P.R. 210 were identified as the prevailing pigments behind chronic allergic reactions in red tattoos. The epitope causing the reaction might be a pigment-degradation product. Metal contamination may derive from different sources, and its role in red tattoo allergy cannot be ascertained.

Contact Dermatitis published new progress about Allergy (tattoo allergy). 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, HPLC of Formula: 1885-29-6.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Kessler, Matthew D. published the artcileCopper(I) iodide complexes with cyanopyridine and 3-nitropyridine ligands, Category: nitriles-buliding-blocks, the main research area is copper iodide cyanopyridine nitropyridine complex preparation crystal mol structure; luminescence metal ligand charge transfer copper iodide cyanopyridine nitropyridine.

The complexes of copper(I) iodide with the three cyanopyridine (PyCN) isomers and 3-nitropyridine have been prepared and characterized by thermal, spectroscopic, and crystallog. methods. The following compounds are reported: (CuI)2(2-PyCN)4 (1), (CuI)(2-PyCN) (2), (CuI)3(2-PyCN) (3), (CuI)2(3-PyCN)4 (4), (CuI)(3-PyCN) (5), (CuI)4(4-PyCN)5 (6), (CuI)4(3-PyNO2)4 (7), and (CuI)(3-PyNO2) (8). Compounds 1 and 4 are isostructural dimers featuring a central Cu2I2 rhomb. Compounds 2, 5, and 8 are isostructural and contain edge-sharing (Cu2I2)�1-D ladders. Compound 3 reveals a unique 2-D structure consisting of (Cu4I4)�triple ladders bridged by Cu2(2-PyCN)2 units that contain pairs of bridging 2-PyCN ligands. Compound 6 is composed of truncated ladder (CuI)4(4-PyCN)4 units that are bridged into a 1-D chain by an addnl. 4-PyCN ligand. Compound 7 is a cubane tetramer. The various yellow and orange PyCN compounds are all luminescent under UV irradiation and exhibit mixed halide/metal-to-ligand charge transfer, while the red and orange PyNO2 complexes are non-emissive at room temperature

Inorganica Chimica Acta published new progress about Charge transfer interaction. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Category: nitriles-buliding-blocks.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Thoke, Mahesh Bhagwan published the artcileUnimolecular cooperative metallaphotocatalysis with conjugately bridged Ir-Ni complexes and its applications in organic coupling reactions, Application In Synthesis of 100-70-9, the main research area is iridium nickel complex organic coupling reaction metallaphotocatalysis.

Recent advances successfully upgraded the unique cooperative partnership between two distinct metals in photocatalysis. Herein we report the design, synthesis and comprehensive study of a series of heteroleptic Ir(III) complexes with a pendant binding site for nickel. The neutral Ir·Lpytz complexes are apt to generate a novel unimol. Ir-Ni bimetallic system in situ during photocatalytic organic transformations where the pyridyl triazole ligand (Lpytz) acts as the conjugated bridge between Ir and Ni metal centers. A comparative study revealed that the bimetallic unimol. system with a conjugated linker is a convenient alternative to a bimol. system. UV-visible and photoluminescence quenching studies showed the importance of the conjugated bridging ligand to vectorial transfer of electrons from the photosensitizer unit to the reaction site. All novel Ir·Lpytz complexes were evaluated in three challenging, mechanistically distinct photoinduced cross-coupling reactions (C-O, C-S and C-N) to demonstrate the enormous potential of a conjugately bridged Ir-Ni catalytic system, thus representing an alternative unimol. bimetallic strategy for photocatalytic Ni mediated cross-coupling reactions.

Organic Chemistry Frontiers published new progress about Coupling reaction (organic). 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Application In Synthesis of 100-70-9.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Ma, Chun-Hua published the artcileTransition-metal-free three-component acetalation-pyridylation of alkenes via photoredox catalysis, HPLC of Formula: 100-70-9, the main research area is aryl pyridinyl propanal preparation antitumor human; alkene diethoxyacetic acid cyanopyridine acetalation pyridylation photoredox catalysis.

A general transition-metal-free photoinduced acetalation-pyridylation of alkenes using diethoxyacetic acid and cyanopyridine was developed under mild conditions. By employing 4CzIPN as the photocatalyst and Cs2CO3 as the base, a diverse range of styrene derivatives and cyanopyridines worked well to give the desired products I (R1 = H, 3-OMe, 2-Cl, etc.; R2 = H, 2-F, 4-OMe, etc.; R3 = H, Me, CH2CH2Ph). The versatility of this method is highlighted by its application in the construction of various functional groups and the late-stage modification of drugs. Importantly, some of the synthesized compounds showed good in vitro antitumor activity, indicating that this protocol is of significance and potential for antitumor drug development.

Chinese Journal of Catalysis published new progress about Acetalization (photochem.). 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, HPLC of Formula: 100-70-9.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Xie, Demeng published the artcileAlkyl/Glycosyl Sulfoxides as Radical Precursors and Their Use in the Synthesis of Pyridine Derivatives, Synthetic Route of 100-70-9, the main research area is pyridine alkyl regioselective preparation; alkyl glycosyl sulfoxide regioselective stereoselective photochem alkylation methoxypyridinium; Alkyl Sulfoxides; C-Glycosides; Electron Donor-Acceptor Complexes; Photochemistry; Radicals.

Here the use of simple and readily available alkyl sulfoxides as precursors to radicals and their application in the preparation of pyridine derivatives are reported. It was shown that alkyl sulfoxides, N-methoxy pyridinium salts and fluoride anions form electron donor-acceptor (EDA) complexes in solution, which, upon visible light irradiation, undergo a radical chain process to afford various pyridine derivatives smoothly. This reaction displays broad scope with respect to both sulfoxides and N-methoxy pyridinium salts. The synthetic versatility of sulfoxides as a handle in chem. adds to their power as radical precursors. Glycosyl sulfoxides are converted to the corresponding pyridyl C-glycosides with high stereoselectivities. Computational and exptl. studies provide insights into the reaction mechanism.

Angewandte Chemie, International Edition published new progress about Alkylation, regioselective. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Synthetic Route of 100-70-9.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Lee, Cheng-Ting published the artcileScreening of CO2 utilization routes from process simulation: Design, optimization, environmental and techno-economic analysis, Computed Properties of 100-70-9, the main research area is carbon dioxide utilization simulation optimization techno economic analysis.

This work aims at evaluating potential direct CO2 conversion processes through systematic screening and process simulation. Fifteen direct routes converting CO2 to carbonates or carbamates, with in situ chem. dehydration using 2-cyanopyridine (2-CP) are focused. The work covers an extensive examination (and supplement) on the phys. properties, selection of promising routes, process simulation, optimization, environmental, and techno-economic evaluation. Firstly, three promising routes were selected, producing di-Me carbonate (DMC), di-Pr carbonate (DPC), and Iso-Pr N-phenylcarbamate (IPPhCM), based on three criteria: azeotropic search, product selectivity and reacting conditions. Next, the corresponding processes were simulated, optimized, heat-integrated, and systematically compared with the previously-proposed di-Et carbonate (DEC) process through environmental and economic anal. From environmental anal., the CO2 emission rate (CO2-e, in kg/kg-product) was 0.067, 0.088, -0.040 and -0.154 for producing DMC, DPC, IPPhCM and DEC, resp. By reducing the excess ratio used for reaction (i.e. 2-CP/alc. or amine/alc.), the CO2-e improved to -0.122, -0.086, and -0.117 for producing DMC, DPC and IPPhCM, resp. Finally, the min. required selling prices (MRSP) at 15% internal rate of return (IRR) were determined, with the unit price of 2-CP, 2-picolinamide (2-PA), and the reactor residence time regarded as uncertainties. The MRSPs for DMC, DPC, IPPhCM and DEC are found in the range of 1.50-4.96, 2.29-4.24, 2.07-4.06 and 1.12-2.81 (all in USD/kg), resp. Future studies exploring the com. availability and the regeneration of 2-CP, and the feasibility of reducing the excess ratio and the reaction residence time are considered helpful.

Journal of CO2 Utilization published new progress about Analysis (techno-economic). 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Computed Properties of 100-70-9.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Petrenko, Yuliia P. published the artcileSynthesis, crystal structure and magnetic properties of new copper(II) complexes based on 3-(2-pyridyl)-1,2,4-triazole, Formula: C6H4N2, the main research area is copper pyridyltriazole sulfate solvate complex preparation crystal structure; magnetic property copper pyridyltriazole sulfate solvate complex.

The synthesis, crystal structure, spectroscopic and magnetic properties of binuclear [Cu2(L)2(SO4)(H2O)3]·3H2O (4a) and tetranuclear [Cu4(HL)2(L)4(DMF)2(SO4)2]·DMF (4b) copper(II) complexes are reported (HL is 3-(pyridine-2-yl)-1,2,4-triazole). Potentiometric titrations, ESI-MS and spectrophotometric studies of complex formation in MeOH/H2O solutions indicated the presence of monomeric [CuHL]2+, dinuclear [Cu2L2]2+ and [Cu2L2(OH)]+, and trinuclear [Cu2L3]+ and [Cu2L3(OH)] species. The small N,N-nucleating ligand HL leads to a supramol. formation of the complexes. The ligand comprises a triazole moiety substituted by pyridine group, strategically located to form chelate metalocycles. The basis of both complexes is two metal centers bridged via N1-N2 diazine grouping of a triazole ring. For complex 4b two HL coordinate in acido form via NPy and N4 of azole moiety as well. There are significant differences in the polyhedrons, namely nuclearity and Cu…Cu separations Complexes were characterized by elemental anal., mass-spectrometry, IR- spectroscopy and x-ray anal. Magnetic measurements revealed that both compounds exhibit antiferromagnetic interaction. The magnetic susceptibility data were interpreted on the basis of the spin Hamiltonian in the temperature range (2-300 K) using the dinuclear (4a:J1 = -52.41 cm-1) and tetranuclear (4b:J1 = -53.10 cm-1 to J2 = -0.14 cm-1) models.

Inorganica Chimica Acta published new progress about Antiferromagnetic exchange. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Formula: C6H4N2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts