Category: nitriles-buliding-blocks

Bulyszko, Ilona published the artcileEvaluation of the Synthetic Potential of an AHBA Knockout Mutant of the Rifamycin Producer Amycolatopsis mediterranei, HPLC of Formula: 199536-01-1, the main research area is Amycolatopsis AHBA knockout mutant mutasynthesis; antibiotics; azides; mutasynthesis; natural products; polyketide synthase.

Supplementing an AHBA(-) mutant strain of Amycolatopsis mediterranei, the rifamycin producer, with a series of benzoic acid derivatives yielded new tetraketides containing different Ph groups. These mutasynthetic studies revealed unique reductive properties of A. mediterranei towards nitro- and azidoarenes, leading to the corresponding anilines. In selected cases, the yields of mutaproducts (fermentation products isolated after feeding bacteria with chem. prepared analogs of natural building blocks) obtained are in a range (up to 118 mg L-1) that renders them useful as chiral building blocks for further synthetic endeavors. The configuration of the stereogenic centers at C6 and C7 was determined to be 6R,7S for one representative tetraketide. Importantly, processing beyond the tetraketide stage is not always blocked when the formation of the bicyclic naphthalene precursor cannot occur. This was proven by formation of a bromo undecaketide, an observation that has implications regarding the evolutionary development of rifamycin biosynthesis.

Chemistry – A European Journal published new progress about Amycolatopsis mediterranei. 199536-01-1 belongs to class nitriles-buliding-blocks, name is Methyl 3-amino-5-cyanobenzoate, and the molecular formula is C9H8N2O2, HPLC of Formula: 199536-01-1.

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

Cranston, Rosemary R. published the artcileN-type solution-processed tin versus silicon phthalocyanines: Comparison of performance in organic thin-film transistors and in organic photovoltaics, Product Details of C8H4N2, the main research area is tin phthalocyanine silicon organic photovoltaic thin film transistor; photostability solution processing semiconductor.

Tin(IV) phthalocyanines (SnPcs) are promising candidates for low-cost organic electronic devices, and have been employed in organic photovoltaics (OPVs) and organic thin-film transistors (OTFTs). However, they remain relatively understudied compared to their silicon phthalocyanine (SiPc) analogs. Previously, we reported the first solution-processed SnPc semiconductors for OTFTs and OPVs; however, the performances of these derivatives were unexpected. Herein to further study the behavior of these derivatives in OPVs and OTFTs, we report the synthesis along with optical and thermal characterization of seven axially substituted (OR)2-SnPcs, five of which were synthesized for the first time. D. functional theory (DFT) was used to predict charge-carrier mobilities for our materials in their crystal state. The application of these SnPcs as ternary additives in poly(3-hexylthiophene) (P3HT)/phenyl-C61-butyric acid Me ester (PC61BM) OPVs and as semiconductors in solution-processed n-type OTFTs was also investigated. When employed as ternary additives in OPVs, all (OR)2-SnPcs decreased the power conversion efficiency, open-circuit voltage, short-circuit current, and fill factor. However, in OTFTs, four of the seven materials exhibited greater electron field-effect mobility with similar threshold voltages compared to their previously studied SiPc analogs. Among these SnPcs, bis(triisobutylsilyl oxide) SnPc displayed the greatest electron field-effect mobility of 0.014 cm2 V-1 s-1, with a threshold voltage of 31.4 V when incorporated into OTFTs. This difference in elec. performance between OTFT and OPV devices was attributed to the low photostability of SnPcs.

ACS Applied Electronic Materials published new progress about Organic thin film transistors. 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, Product Details of C8H4N2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Ishida, Shintaro published the artcileStructures and Properties of Phenylene-Bridged 1,3-Diaza-2-silole and Related 2H-Azasilirenes Obtained by the Reactions of a Dialkylsilylene with Arylnitriles, Safety of Phthalonitrile, the main research area is silylene cycloaddition nitrile dinitrile preparation azasilirene disilolocyclooctene spirocycle; crystal mol structure azasilirene diazasilolocyclooctene spirocycle.

Cycloadditions of diorganosilylenes with nitriles afforded azasilirenes, while phthalonitrile gave dibenzobis[1,3,2]-diazasilolocyclooctene I (10) and spirocycle II (11) with 2,2,5,5-tetra-TMS-1-silacyclopentylidene. Silylene cycloaddition with unsaturated compounds have been extensively explored as convenient and efficient routes to silacycles. Among these, reactions of silylenes with nitriles are still limited and the electronic properties of the resulting azasilacycles such as 2H-azasilirene and 1,3-diaza-2-siloles are less examined We report herein synthesis of a phenylene-bridged 1,3-diaza-2-silole and C-aryl 2H-azasilirenes using cycloaddition reactions of a silylene as well as their structures and UV/Vis absorption spectra. Treatment of an isolable dialkylsilylene, 2,2,5,5-tetra-TMS-1-silacyclopentylidene, with o-phthalonitrile afforded a phenylene-bridged 1,3-diazasilole 10 and an isomeric dearomatized product 11. Similar reactions with p-substituted benzonitriles gave new 2H-azasilirenes. UV/Vis absorption spectra and theor. calculations showed that high-lying n(C:N) orbitals in 1,3-diaza-2-siloles and 2H-azasilirenes and low-lying π*(1,3-diaza-2-silole) orbitals are important for their electronic characters. Computational studies revealed that 1,3-dipolar cycloaddition of silylene nitrile complexes (nitrile silaylides) with the second nitrile and an aromatic C:C bond of 2-cyanophenyl group are key steps for the cycloaddition

European Journal of Inorganic Chemistry published new progress about [1+2] Cycloaddition reaction. 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, Safety of Phthalonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Kal-Koshvandi, Afsaneh Taheri published the artcileSynthesis and Characterization of Ultrapure HKUST-1 MOFs as Reusable Heterogeneous Catalysts for the Green Synthesis of Tetrazole Derivatives, Application of Phthalonitrile, the main research area is copper benzene tricarboxylate metal organic framework preparation surface structure; phenyltetrazole preparation green chem; phenyl tetrazolopyrimidine preparation green chem.

An ultrapure HKUST-1 MOFs synthesized through a precised methodol. as a heterogeneous catalyst for a green approach to the synthesis of tetrazole derivatives via two-, three-, and four-component reactions in milder reaction conditions was presented. Various preparation methods to produce HKUST-1 such as microwave irradiation, reflux, hydrothermal technique, and ultrasonication was precisely compared and it was proved that the best result was obtained during the hydrothermal technique. This was the first design, preparation, characterization and application in the present of HKUST-1 MOFs to the synthesis of the biol. and pharmaceutically important tetrazole compounds in green conditions. Moreover, plausible mechanisms of reactions was suggested for the catalytic activity of the presented catalyst. The catalyst was characterized by various techniques such as FT-IR, SEM, EDX, and XRD. Addnl., HKUST-1 was recoverable as well as reusable without any significant loss of its activity, which strongly supports the heterogeneous nature of the catalyyst. This novel catalysis protocol offered several advantages such as eco-friendly conditions, lower reaction time, milder reaction conditions, excellent catalytic activity and an easy separation of the catalyst make it a good heterogeneous system.

ChemistrySelect published new progress about [3+2] Cycloaddition reaction. 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

Nikoorazm, Mohsen published the artcileCopper and nickel immobilized on cytosine@MCM-41: as highly efficient, reusable and organic-inorganic hybrid nanocatalysts for the homoselective synthesis of tetrazoles and pyranopyrazoles, Safety of Phthalonitrile, the main research area is copper mmobilized cytosine functionalized mesoporous silica catalyst preparation; nickel immobilized cytosine functionalized mesoporous silica catalyst preparation; pyranopyrazole preparation green chem; phenyl tetrazole preparation green chem.

In this work, a green approach was reported for efficient synthesis of biol. active tetrazole and pyranopyrazole derivatives in the presence of Cu-Cytosine@MCM-41 and Ni-Cytosine@MCM-41 (copper (II) and nickel (II) catalyst on the modified MCM-41 using cytosine). The synthesis of tetrazoles and pyranopyrazoles in the presence of these catalysts was performed in green solvents such as water or poly (ethylene glycol) (PEG). All products were obtained in high TOF (turnover frequency) numbers in the presence of these catalysts, which indicate the high efficiency of these catalysts in the synthesis of tetrazole and pyranopyrazole derivatives The prepared catalysts were characterized by various techniques such as BET, TGA, XRD, FT-IR, SEM, EDS, WDX, TEM, and AAS. Mesoporous structure of these catalysts was confirmed by nitrogen adsorption-desorption isotherms. These catalysts can be recovered and reused for several runs without significant change in their catalytic activity or metal capacity. The recovered catalysts have been characterized by XRD, SEM, EDS, WDX, FT-IR and AAS techniques, by which their heterogeneous nature has been confirmed.

Applied Organometallic Chemistry published new progress about [3+2] Cycloaddition reaction. 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, Safety of Phthalonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Ghafouri-Nejad, Raziyeh published the artcileSynthesis and characterization of Cu-N, N’-Dicyclohexylcarbodiimide supported on CMK-3 as a novel, efficient and recoverable nanocatalyst for synthesis of tetrazole, polyhydroquinoline, and sulfoxide derivatives, Product Details of C8H4N2, the main research area is dicyclohexylcarbodiimide carbon nanocatalyst tetrazole polyhydroquinoline sulfoxide derivative.

Mesoporous carbon CMK-3 was prepared using SBA-15 silica mesoporous as a hard template. Then, Cu-N, N’-Dicyclohexylcarbodiimide was supported on CMK-3 as a reusable and highly efficient nanocatalyst for the synthesis of tetrazole, polyhydroquinoline, and sulfoxide derivatives This new catalyst was characterized by FT-IR spectroscopy, XRD, SEM, BET, TGA, EDX, and ICP-OES techniques. After completing reactions, the catalyst was easily separated from the reaction mixture using centrifuge and reusable five times without significant loss of their catalytic efficiency.

Reaction Kinetics, Mechanisms and Catalysis published new progress about [3+2] Cycloaddition reaction. 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, Product Details of C8H4N2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Fatahi, Hosna published the artcileSynthesis of α-Aminonitriles and 5-Substituted 1H-Tetrazoles Using an Efficient Nanocatalyst of Fe3O4@SiO2-APTES-supported Trifluoroacetic Acid, Synthetic Route of 100-70-9, the main research area is iron oxide supported silylpropylammonium trifluoroacetic acid preparation surface structure; carbonyl compound aniline heterogeneous catalyst Strecker reaction green chem; phenylamino acetonitrile preparation; sodium azide aryl nitrile heterogeneous catalyst cycloaddition green chem; aryl tetrazole preparation.

Fe3O4@SiO2-APTES-supported trifluoroacetic acid nanocatalyst was used for the one-pot synthesis of α-aminonitriles via a three-component reaction of aldehydes (or ketones), amines and sodium cyanide. This method produced a high yield of 75-96% using only a small amount of the catalyst (0.05 g) in EtOH at room temperature The catalyst was also employed for the synthesis of 5-substituted 1H-tetrazoles from nitriles and sodium azide in EtOH at 80°. The tetrazoles were produced with good-to-excellent yields in a short reaction time of 4 h. Both synthetic methods were carried out in the absence of an organic volatile solvent. Because the supported trifluoroacetic acid generated a solid acid on the surface, thus the acid corrosiveness was not a serious challenge. This heterogeneous nanocatalyst was magnetically recovered and reused several times without significant loss of catalytic activity.

Journal of Heterocyclic Chemistry published new progress about [3+2] Cycloaddition reaction. 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

Cao, Yu published the artcileSelf-[3+2] annulation reaction of pyridinium salts: synthesis of N-indolizine-substituted pyridine-2(1H)-ones, Quality Control of 1885-29-6, the main research area is benzyolmethyl pyridinium bromide cycloaddition; aroyl arylindolizinyl pyridinone preparation; aniline benzyolmethyl pyridinium bromide cycloaddition; benzoyl phenylindolizinylpyridinylideneamino benzonitrile preparation.

A self-[3+2] annulation reaction of pyridinium salts was developed for the synthesis of N-indolizine-substituted pyridine-2(1H)-ones. This protocol was carried out under mild reaction conditions without any precious catalysts in generally moderate to good yields. Addnl., a plausible mechanism for the transformation was proposed.

New Journal of Chemistry published new progress about [3+2] Cycloaddition reaction. 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Quality Control of 1885-29-6.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts