Category: 100-70-9

Yu, Bor-Yih published the artcileEvaluating the direct CO2 to diethyl carbonate (DEC) process: Rigorous simulation, techno-economical and environmental evaluation, Name: Picolinonitrile, the main research area is cyanopyridine picolinamide annealing diethyl carbonate simulation.

In this work, the plant-wide process to produce di-Et carbonate (DEC) from the direct reaction of CO2 with ethanol, which uses 2-cyanopyridine (2-CP) as an in situ dehydrating agent, is proposed for the first time. Rigorous design, optimization, ability in carbon reduction, techno-economic and feasibility analyses are all performed in this work. The process consists of two sections. The first one is the main section, in which DEC is generated, along with the removal of water using 2-CP to form 2-picolinamide (2-PA). The second one is the regeneration section, where 2-CP is converted back from 2-PA and recycled. Using simulated annealing method, the optimized CO2 reduction rate in the main section is 0.237 (Ton CO2/Ton DEC generated) on an annual basis. We identify that when the regeneration section is operated with a molar ratio of mesitylene to 2-PA being less than 2.05, the overall process can be in net CO2 reduction Under the constraint of 90 % regeneration of 2-CP as reported in available literature, the produced DEC can match the current market price range under 15 % internal rate of return (IRR), if 2-CP can be obtained with a price lower than 2.56 USD/kg (corresponding to DEC price of 1.10 USD/kg and ethanol price of 0.37 USD/kg) to 6.09 USD/kg (corresponding to DEC price of 1.90 USD/kg and ethanol price of 0.56 USD/kg).

Journal of CO2 Utilization published new progress about Annealing. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Name: Picolinonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Li, Yamei published the artcileSilica supported potassium oxide catalyst for dehydration of 2-picolinamide to form 2-cyanopyridine, Synthetic Route of 100-70-9, the main research area is picolinamide cyanopyridine silica potassium oxide catalyst dehydration.

The dehydration of 2-picolinamide to produce 2-cyanopyridine was investigated thoroughly using silica supported potassium oxide as a heterogeneous catalyst. Both large sp. surface area and pore size of SiO2 (B) contributed to the favorable catalytic performance for the synthesis of 2-CP. In addition, the yield of 2-CP showed the linear relationship with the amounts of medium basicity of the catalysts, demonstrating that medium basic sites were the active sites of silica supported potassium oxide catalysts. The catalysts were further characterized by XRD and FT-IR to clarify the active species. The results indicated the Si-O-K group produced by the reaction of K2CO3 with Si-OH was the active species, which was further evidenced by the adjustment of the amount of Si-OH by silylation and hydroxylation procedure.

Chinese Chemical Letters published new progress about Catalysis. 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

Kalita, Gauravjyoti D. published the artcileBimetallic Au-Pd nanoparticles supported on silica with a tunable core@shell structure: enhanced catalytic activity of Pd(core)-Au(shell) over Au(core)-Pd(shell), Recommanded Product: Picolinonitrile, the main research area is gold palladium nanoparticle silica coreshell structure catalytic activity.

A facile ligand-assisted approach of synthesizing bimetallic Au-Pd nanoparticles supported on silica with a tunable core@shell structure is presented. Maneuvering the addition sequence of metal salts, both Aucore-Pdshell (Au@Pd-SiO2) and Pdcore-Aushell (Pd@Au-SiO2) nanoparticles were synthesized. The structures and compositions of the core-shell materials were confirmed by probe-corrected HRTEM, TEM-EDX mapping, EDS line scanning, XPS, PXRD, BET, FE-SEM-EDX and ICP anal. The synergistic potentials of the core-shell materials were evaluated for two important reactions viz. hydrogenation of nitroarenes to anilines and hydration of nitriles to amides. In fact, in both the reactions, the Au-Pd materials exhibited superior performance over monometallic Au or Pd counterparts. Notably, among the two bimetallic materials, the one with Pdcore-Aushell structure displayed superior activity over the Aucore-Pdshell structure which could be attributed to the higher stability and uniform Au-Pd bimetallic interfaces in the former compared to the latter. Apart from enhanced synergism, high chemoselectivity in hydrogenation, wide functional group tolerance, high recyclability, etc. are other advantages of our system. A kinetic study has also been performed for the nitrile hydration reaction which demonstrates first order kinetics. Evaluation of rate constants along with a brief investigation on the Hammett parameters has also been presented.

Nanoscale Advances published new progress about Catalysis. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Recommanded Product: Picolinonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Vogt, Natalja published the artcileThe equilibrium molecular structure of 2-cyanopyridine from combined analysis of gas-phase electron diffraction and microwave data and results of ab-initio calculations, Synthetic Route of 100-70-9, the main research area is cyanopyridine electron diffraction microwave rotational constant equilibrium mol structure.

The gas-phase electron diffraction study of 2-cyanopyridine was carried out for the first time. Results of ab-initio structure calculations performed at the CCSD(T) level of theory agree well with the equilibrium structure determined by the electron diffraction method in combination with vibrational spectroscopy data and microwave rotational constants The deviations between them are only a few thousandths of Å units and a few tenths of degree in the bond lengths and bond angles, resp. The structure in the solid state is more different from that in the gas phase. The observed discrepancies between these structures are up to 0.02 Å and 2° in the bond lengths and bond angles, resp. The influence of the ortho-, meta- and para-cyano substituents on the geometry of pyridine ring is discussed. The pyridine ring is noticeably distorted due to cyano substituents. The Cipso-N and/or Cipso-C bond lengths are elongated both in 2-CNP and 4-CNP by 0.004 Å in comparison to those in pyridine, whereas the Cipso-C bond lengths are increased by 0.005 and 0.009 Å in 3-CNP.

Structural Chemistry published new progress about Bond angle. 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

Gong, Zi-Jie published the artcileDirect copolymerization of carbon dioxide and 1,4-butanediol enhanced by ceria nanorod catalyst, Safety of Picolinonitrile, the main research area is carbon dioxide butanediol direct copolymerization ceria nanorod catalyst.

Direct copolymerization of CO2 and 1,4-butanediol to yield poly(butylene carbonate) oligomers has been recently realized using CeO2 as a catalyst and 2-cyanopyridine as a dehydrating agent. In this study, CeO2 nanorod and nanocube were synthesized, characterized, and compared their catalytic activities with com. CeO2 nanoparticle and submicronparticle. Reaction testing reveals that CeO2 nanorod exhibits a much higher yield of polycarbonate oligomer than other CeO2 catalysts. Surface characterizations indicate that CeO2 nanorod displays a significantly higher CO2 uptake and stronger interactions with CO2, properties that could be beneficial to activate stable CO2 mol. In-situ IR spectroscopy suggests that bidentate carbonate, i.e., CO2 adsorbs over the CeO2 surface with an oxygen atom and an oxygen vacancy coordinated with a cerium atom, is the key intermediate associated with the observed catalytic activities. These results manifest the importance of surface oxygen vacancy of CeO2 for activating CO2 to proceed non-reductive conversion.

Applied Catalysis, B: Environmental published new progress about Grain size. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Safety of Picolinonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Wimmer, Eric published the artcileAn autonomous self-optimizing flow machine for the synthesis of pyridine-oxazoline (PyOX) ligands, Recommanded Product: Picolinonitrile, the main research area is pyridine oxazoline ligand self optimizing flow machine.

Pyridine-oxazoline-type ligands (PyOX) are an important class of chiral ligands for metal-catalyzed asym. transformations. Herein we describe an efficient and reliable flow route which is amenable for the synthesis of PyOX ligands at a scale of hundreds of milligrams per h. Optimal flow conditions were rapidly identified through the assistance of an inhouse built autonomous self-optimizing system integrating a custom-made optimization algorithm derived from the Nelder-Mead and golden section search methods. The preparation of a small library of representative PyOX ligands highlights the practical application of this flow route which should be of primary interest for synthetic chemists developing metal-catalyzed asym. transformations.

Reaction Chemistry & Engineering published new progress about Algorithm. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Recommanded Product: Picolinonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Yu, Yueh-Cheng published the artcileConceptual design, environmental, and economic evaluation of direct copolymerization process of carbon dioxide and 1,4-butanediol, Category: nitriles-buliding-blocks, the main research area is carbon dioxide butanediol copolymerization.

The routes to convert CO2 into environmentally benign materials have attracted wide attentions. In this work, an emerging process to produce poly(butylene carbonate) (or PBC) from direct copolymerization of carbon dioxide and 1,4-butanediol is firstly simulated with analyses on the CO2 emission ratio (CO2-e, in kg-CO2/kg-PBC) and yearly unit manufacturing cost of product (YUMC, in USD/kg). In order to address the issues associated with large amount of solvents used in the lab scale, two proposed scenarios including the reduction of solvent amount, and heat integration by vapor recompression cycle (VRC) were simulated. It is found that CO2-e is reduced by 82.0% (from 30.06 to 5.42) when the solvent amount is reduced to 10%, and another 19.9% reduction in CO2-e (to 4.34) when applying the VRC. YUMCs are reduced by ca. 68% for both proposed scenarios (from 5.62 to ca. 1.8). The findings reported in this study may prove informative for developing CO2 conversion technologies from lab scale to industrial scale.

Journal of the Taiwan Institute of Chemical Engineers published new progress about Copolymerization. 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

Mougeot, Romain published the artcileConvergent and Practical Synthesis of Fluorescent Triphenylamine Derivatives and Their Localization in Living Cells, Quality Control of 100-70-9, the main research area is pyridine oxazole thiazole preparation fluorescence.

In the search for new fluorescent triphenylamine (TP) derivatives, authors studied the influence of the position and substitution of diverse heterocyclic substituents. A library of 10 fluorescent triphenylamines bearing either oxazoles or thiazoles and pyridiniums, substituted at different positions has been developed. The approach is based on a convergent C-H activation reaction between pyridine-oxazoles or pyridine-thiazoles and di-iodo triphenylamine. Author’s showed that the nature and substitution pattern of the 5-membered- (oxazole, thiazole) or 6-membered heterocycle (pyridine) has a strong influence on their fluorescence properties and on their localization in living cells as they stain either the nucleus or mitochondria.

European Journal of Organic Chemistry published new progress about Fluorescent dyes. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Quality Control of 100-70-9.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Shakya, Bhushan published the artcile2-Pyridineformamide N(4)-ring incorporated thiosemicarbazones inhibit MCF-7 cells by inhibiting JNK pathway, Computed Properties of 100-70-9, the main research area is neoplasm antitumor 2 pyridineformamide thiosemicarbazone JNK pathway; 2-Pyridineformamide thiosemicarbazone; A375; A431; Cell viability; HeLa; MCF-7.

In an effort to develop a more potent anticancer therapeutic agent, a series of 2-pyridineformamide thiosemicarbazones (I) (R = H, 4-CH3, 5-F, 6-CH3; heterocycle = pyrrolidine, piperidine, morpholine, thiomorpholine, azepane, 1-(2-pyridinyl)-piperazine) have been synthesized and evaluated for their anti-cancer activities against the cancer cells MCF-7 (breast cancer cell line), A-431 and A375 (epidermoid carcinoma cell line), and HeLa (cervical cancer cell line) using MTT assay. All these 2-pyridineformamide thiosemicarbazones exhibited anti-proliferative activities towards these cell lines. 5FAmPyrr(II) possess most profound effects against MCF-7 cells with IC50 of 0.9 μM. In flow cytometry using Propidium Iodide, II was found to induce cell death significantly in a dose dependent manner (100 nM-3 μM) and inhibited colony formation of MCF-7 cells. This compound induced pro-apoptotic protein Bax and inhibited anti apoptotic protein Bcl-2 as well as both c-Jun and Jun N-terminal kinase (abbreviated as JNK) in concentration dependent manner. Further pro-caspase 3 and PARP were inhibited by II at concentration of 3 μM. The results suggest that II exhibit anticancer potency and induced cell death by inhibiting MAPK signaling and inducing intrinsic apoptotic pathway. All these indicate that 2-pyridineformamide thiosemicarbazones could be developed as future therapeutics agents to treat cancer.

Bioorganic & Medicinal Chemistry Letters published new progress about Antitumor agents. 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

Lelieveldt, Lianne P. W. M. published the artcileVinylboronic acid-caged prodrug activation using click-to-release tetrazine ligation, Safety of Picolinonitrile, the main research area is vinylboronic acid cage prodrug click controlled release tetrazine ligation.

Bioorthogonal reactions can be performed selectively in the presence of any biol. functional group and are widely used to achieve site-selective chem. modifications of biomols. The click-to-release reaction is a bioorthogonal bond-cleavage variant that has gained much interest over the last few years. The bioorthogonal reaction between tetrazines and trans-cyclooctenes or vinyl ethers, for example, initiates the release of a small mol. immediately after the cycloaddition with tetrazines. Recently, our group reported that vinylboronic acids (VBAs) give exceptionally high reaction rates in the bioorthogonal inverse electron-demand Diels-Alder reaction with tetrazines that are substituted with boron-coordinating ligands. In the present study, we show that VBAs can be used in a click-to-release variant and demonstrate its bioorthogonality with a VBA-protected doxorubicin prodrug. We show that the cytotoxicity of doxorubicin is silenced by the attachment of the VBA, and activity can be largely restored upon the reaction with a tetrazine, inducing cell death.

Organic & Biomolecular Chemistry published new progress about Antitumor agents. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Safety of Picolinonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts