Month: November 2022

Medjahed, Aboubakr published the artcileProcessability and mechanical properties of surface-modified glass-fibres/phthalonitrile composite and Al-Li alloy fibre-metal-laminates, Formula: C8H4N2, the main research area is glass fiber phthalonitrile aluminum lithium alloy mech property; glass phthalonitrile fiber metal laminate aluminum lithium alloy.

In this study, newly developed fiber-metal laminates (Al-LiFMLs) were prepared by a lay-up process of a high-performance surface-modified glass fibers/phthalonitrile (GFs/PN) composite and Al-Li alloy. The results showed that varying the composite considerably affected the tensile properties of the Al-LiFMLs, as well as exhibiting enhancements over the properties of both the individual Al-Li alloys and GFs/PN composite constituents. For instance, when the number of composite layers varied from 6 to 14, the ultimate tensile strength of the Al-LiFMLs increased from 315 to 611 MPa. It was revealed that the failure mode displayed a more ductile behavior (up to 20%) for all the developed Al-LiFMLs affected by the ductile fracture mode of the Al-Li alloy.

Materials Science and Technology published new progress about Elongation at break. 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, Formula: C8H4N2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Kalyani, Adula published the artcilePalladium catalyzed nitrile insertion and cyanation of biindoles: Synthesis of indole fused α-carboline scaffolds via double C-H activation, SDS of cas: 100-70-9, the main research area is indole fused alpha carboline preparation; biindole nitrile double carbon hydrogen activation cyclization palladium.

A palladium-catalyzed synthesis of indole fused α-carbolines (pyridodiindoles) from 2,3′-biindoles and nitriles has been developed. This conversion involves the double C-H activation and cyclization of 2,3′-biindoles with nitriles via C-C and C-N bond formation in a single step. However, C-3 cyanated biindoles were formed through a retro-Mannich pathway when the reaction was carried out with Et cyanoacetate.

Tetrahedron Letters published new progress about C-H bond activation. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, SDS of cas: 100-70-9.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Yu, Tian-Yang published the artcileDirect C2-Heteroarylation of Indoles by Rhodium-Catalyzed C-C Bond Cleavage of Secondary Alcohols, COA of Formula: C10H6N2O, the main research area is biheteroaryl preparation; indole secondary alc heteroarylation carbon bond cleavage rhodium catalyst.

A rhodium-catalyzed direct heteroarylation of indoles by cleavage of an inert C-C bond of alcs. is reported. This catalytic system exhibits high reactivity and tolerates various functional groups. This reaction provides a tool for the rapid construction of biheteroaryls without pre-activation of the starting materials. Control experiments were conducted to determine a possible mechanism. This reaction makes a significant contribution to the field of C-C bond activation of alcs.

Asian Journal of Organic Chemistry published new progress about C-C bond activation. 87150-13-8 belongs to class nitriles-buliding-blocks, name is 4-(5-Oxazolyl)benzonitrile, and the molecular formula is C10H6N2O, COA of Formula: C10H6N2O.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Galani, Sunil M. published the artcileEnhanced Thermocatalytic Activity of Porous Yellow ZnO Nanoflakes: Defect- and Morphology-Induced Perspectives, Application In Synthesis of 100-70-9, the main research area is thermocatalysis porous yellow zinc oxide nanoflake defect morphol; heterogeneous catalysis; nanostructures; oxygen vacancies; tetrazole; zinc oxide.

A simple and effective strategy is reported for the synthesis of yellow ZnO (Y-ZnO) nanostructures with abundant O vacancies on a large scale, through the sulfidation of ZnO followed by calcination. The developed strategy allows retention of the overall morphol. of Y-ZnO compared with pristine ZnO and the extent of O vacancies can be tuned. The influence of O deficiencies, the extent of defect sites, and the morphol. of ZnO on its solution-phase thermocatalytic activity was evaluated in the synthesis of 5-substituted-1H-tetrazoles with different nitriles and Na azide. A reasonable enhancement in the reaction rate was achieved by using Y-ZnO nanoflakes (Y-ZnO NFs) as a catalyst in place of pristine ZnO NFs. The reaction was complete within 6 h at 110° with Y-ZnO NFs, whereas it took 14 h at 120° with pristine ZnO NFs. The catalyst is easy to recycle without a significant loss in catalytic activity.

Chemistry – An Asian Journal published new progress about Catalysis (thermo-). 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

Qi, Xiao-Lei published the artcileSynthesis and BK channel-opening activity of 2-amino-1,3-thiazole derivatives, Formula: C7H6N2, the main research area is aminothiazole synthesis BK channel opening SAR; BK channels; Openers; SAR; Synthesis; Thiazole.

A series of 2-amino-5-arylmethyl- or 5-heteroarylmethyl-1,3-thiazole derivatives were synthesized and evaluated for BK channel-opening activities in cell-based fluorescence assay and electrophysiol. recording. The assay results indicated that the activities of the investigated compounds were influenced by the physicochem. properties of the substituent at benzene ring.

Bioorganic & Medicinal Chemistry Letters published new progress about Bioelectric current. 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

Tong, Yue published the artcilePhotocatalytic redox-neutral arylation of cyclopropanols with cyanoarenes via radical-mediated C-C and C-CN bond cleavage, Recommanded Product: Phthalonitrile, the main research area is cyclopropanol cyanoarene bond cleavage photocatalytic redox neutral arylation.

β-Arylated ketones widely exist in many biol. active mols. and natural products. Herein, we describe a photocatalytic redox-neutral arylation of cyclopropanols with cyanoarenes via radical-mediated C-C and C-CN bond cleavage to afford various β-arylated ketones. This mild and external oxidant-free approach showed good compatibility with a range of cyclopropanols and cyanoarenes and accomplished absolute regioselective control for the precise functionalization of pyridines via the C-CN bond cleavage of 4-cyanopyridines. Remarkably, this photocatalytic ring-opening of cyclopropanols was enabled by proton-coupled electron transfer (PCET) activation using an oxidized photocatalyst.

Organic Chemistry Frontiers published new progress about Arylation (neutral). 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

Tu, Hua published the artcileDistinctive molecular inhibition mechanisms for selective inhibitors of human 11β-hydroxysteroid dehydrogenase type 1, Quality Control of 97009-67-1, the main research area is sulfonamide triazole hydroxysteroid dehydrogenase inhibitor preparation; non insulin dependent diabetes antidiabetic hydroxysteroid dehydrogenase inhibitor.

11β-Hydroxysteroid dehydrogenase type 1 (11β-HSD1) catalyzes the NADPH dependent interconversion of inactive cortisone to active cortisol. Excess 11β-HSD1 or cortisol leads to insulin resistance and metabolic syndrome in animal models and in humans. Inhibiting 11β-HSD1 activity signifies a promising therapeutic strategy in the treatment of Type 2 diabetes and related diseases. Herein, the authors report two highly potent and selective small mol. inhibitors of human 11β-HSD1. While compound (I), a sulfonamide, functions as a simple substrate competitive inhibitor, compound (II), a triazole, shows the kinetic profile of a mixed inhibitor. Co-crystal structures reveal that both compounds occupy the 11β-HSD1 catalytic site, but present distinct mol. interactions with the protein. Strikingly, compound (II) interacts much closer to the cofactor NADP+ and likely modifies its binding. Together, the structural and kinetic analyses demonstrate two distinctive mol. inhibition mechanisms, providing valuable information for future inhibitor design.

Bioorganic & Medicinal Chemistry published new progress about Antidiabetic agents. 97009-67-1 belongs to class nitriles-buliding-blocks, name is 1-(4-Fluorophenyl)cyclopropanecarbonitrile, and the molecular formula is C10H8FN, Quality Control of 97009-67-1.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Hui, Heping published the artcileStructure characterization, antioxidant and hypoglycemic activity of an arabinogalactoglucan from Scutellaria baicalensis Georgi, Quality Control of 91-15-6, the main research area is Scutellaria arabinogalactoglucan SBP1 antioxidant hypoglycemic agent; Antioxidant and hypoglycemic activity; Arabinogalactoglucan; Scutellaria baicalensis Georgi; Structure characterization.

An arabinogalactoglucan SBP-1 was purified from Scutellaria baicalensis by DEAE-52 and Sephadex G-100 column chromatog. The structure of SBP-1 was characterized using HPLC, IR, GC-MS, 1-D and 2-D NMR. The antioxidant and hypoglycemic activity of SBP-1 was investigated by vitro evaluation. The results showed that SBP-1 was composed of arabinose, glucose and galactose in a molar ratio of 1.0:5.9:1.1 and its Mw were 91,156. The backbone of SBP-1 was mainly composed of repeating →1-α-D-Glcp-(4 → 1)-α-D-Glcp-(3 → 1)-α-D-Galp-(4→. The braches were composed of →2)-α-L-Araf-(1→, →3)-β-D-Glcp-1→ and α-D-Glcp-1→, which mainly substituted at O-6 of Glc, while terminal residue was α-L-Araf-1→ and α-D-Glcp-1→. Vitro bioactivity showed that SBP-1 had dose-dependent antioxidant and hypoglycemic activity. The scavenging rate on ABTS, DPPH, hydroxyl and superoxide radicals was all beyond 60% as SBP-1 concentration reached 4 mg/mL, and the inhibition rate on α-glucosidase and α-amylase was both more than 80%, which was closely to that of acarbose.

International Journal of Biological Macromolecules published new progress about Antidiabetic agents. 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, Quality Control of 91-15-6.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Panomsuwan, Gasidit published the artcileIn situ solution plasma synthesis of silver nanoparticles supported on nitrogen-doped carbons with enhanced oxygen reduction activity, Category: nitriles-buliding-blocks, the main research area is silver nanoparticle nitrogen doped carbon electrocatalyst plasma synthesis; oxygen reduction reaction silver nanoparticle nitrogen doped carbon electrocatalyst.

Silver nanoparticles supported on nitrogen-doped carbons (Ag/NC) were in situ synthesized by a solution plasma process. In the solution plasma, Ag nanoparticles were produced via the sputtering of Ag electrode, while the NC supports were simultaneously synthesized from 2-cyanopyridine (C6H4N2). The results of the characterization show that Ag nanoparticles had good crystallinity and the NC supports possessed an amorphous structure. The oxygen reduction reaction (ORR) catalyzed on Ag/NC proceeded via the co-existence of two and four-electron pathways in alk. solution, with the four-electron pathway being found to be more dominant. An enhanced ORR activity of Ag/NC was attributed to the synergistic effect of Ag nanoparticles and NC supports. Moreover, Ag/NC exhibited long-term durability and high resistance to methanol oxidation in comparison with the com. Pt/C catalyst.

Materials Letters published new progress about Amorphous structure. 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

Wang, Wenbo published the artcileTricycloquinazoline-containing 3D conjugated microporous polymers and 2D covalent quinazoline networks: microstructure and conductivity, Synthetic Route of 1885-29-6, the main research area is tricycloquinazoline conjugated microporous polymer covalent quinazoline network microstructure conductivity; gas adsorption hydrogen evolution reaction electrocatalyst.

Conjugated microporous polymers (CMPs) and covalent triazine frameworks (CTFs) with conjugated linkages and nanochannels have been showcased as a new platform in extensive fields. Here, by tuning the geometry of the N-rich skeleton tricycloquinazoline (TQ) unit, isomers of the 3D amorphous conjugated microporous polymer (TQ-CMP) and 2D laminar covalent quinazoline network (TQ-CQN) are synthesized. The derived diverse microstructure and elec. conductivity related to the applications of gas adsorption and the hydrogen evolution reaction (HER) are systematically discussed. TQ-CMP fabricated with an internal crosslinking network reveals a notable uptake of 25.6 wt% CO2 and of 2.91 wt% CH4 at 273 K and 1 bar, higher than most reported POP materials, which could be attributed to the higher BET surface area (781.0 m2 g-1) and dispersed pore size (1.1 nm to 13.1 nm) for guest mol. absorption. In contrast, both the modulated electronic structure of the precise π-conjugate planes and the vertically ordered one-dimensional channels endow TQ-CQN with more built-in catalytic sites and rapid electron transmission for the HER. Without any noble metal doping, the excellent catalytic activity and faster reaction kinetics of TQ-CQN are epitomized by the achieved lower overpotential of 80 mV and the Tafel slope of 40 mV dec-1.

Polymer Chemistry published new progress about Adsorption enthalpy. 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Synthetic Route of 1885-29-6.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts