Tag: M.W=100-150

An article Imidazo[1,2-a]pyridine A(3)-Coupling Catalyzed by a Cu/SiO2 Material WOS:000482836400005 published article about ONE-POT SYNTHESIS; 3-COMPONENT COUPLING REACTION; MULTICOMPONENT SYNTHESIS; COPPER; ALKYNE; 2-AMINOPYRIDINES; CYCLOADDITION; CYCLIZATION; PALLADIUM; ALDEHYDES in [de Salles, Helena D.; Benvenutti, Edilson, V; Schneider, Paulo H.] Univ Fed Rio Grande do Sul, Inst Quim, Av Bento Goncalves 9500, BR-91501970 Porto Alegre, RS, Brazil; [da Silva, Tiago L.] Univ Fed Rio de Janeiro, Inst Quim, Av Athos da Silveira Ramos 149,Bloco A, BR-21941909 Rio de Janeiro, RJ, Brazil; [Radatz, Catia S.] Univ Fed Pelotas UFPeI, CCQFA, BR-96010900 Pelotas, RS, Brazil; [Affeldt, Ricardo F.] Univ Fed Santa Catarina, Ctr Ciencias Fis & Matemat, Dept Quim, BR-88040970 Florianopolis, SC, Brazil in 2019.0, Cited 60.0. HPLC of Formula: C6H5NO. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1

In this work, we report the preparation of a copper-silica material (Cu/SiO2) by a sol-gel methodology and its characterization concerning composition and textural properties. The Cu/SiO2 material was successfully applied as a Lewis acid heterogeneous catalyst for the A(3)-coupling from 2-aminopyridine, aldehydes and alkynes to imidazo[1,2-a]pyridines (45-82%). which are relevant pharmacological scaffolds. The synthesis shows a number of advantages, such as easy separation from the reaction media and the minimal formation of metal aqueous wastes. Investigation of the mechanism supports the involvement of the formation of reaction intermediates inside the pores of the mesoporous material prior to 5-exo-dig cyclization.

About 3-Pyridinecarboxaldehyde, If you have any questions, you can contact de Salles, HD; da Silva, TL; Radatz, CS; Affeldt, RF; Benvenutti, EV; Schneider, PH or concate me.. HPLC of Formula: C6H5NO

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Teng, QQ; Ng, PS; Leung, JN; Huynh, HV in [Teng, Qiaoqiao; Ng, Ping Siang; Leung, Jia Nuo; Han Vinh Huynh] Natl Univ Singapore, Dept Chem, 3 Sci Dr 3, Singapore 117543, Singapore; [Teng, Qiaoqiao] Changzhou Univ, Sch Petrochem Engn, Changzhou 213164, Peoples R China published Donor Strengths Determination of Pnictogen and Chalcogen Ligands by the Huynh Electronic Parameter and Its Correlation to Sigma Hammett Constants in 2019.0, Cited 37.0. SDS of cas: 500-22-1. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1.

The suitability and accuracy of the Huynh electronic parameter (HEP) was further tested to reveal remote substituent effects in pyridines, which are located five or six bonds away from the reporter probe. These values show an excellent correlation to Hammett sigma-constants of the respective substituents with coefficients of R-2=0.9856 (sigma(m)) and R-2=0.9857 (sigma(p)). Based on this observation, a methodology for the re-evaluation of certain Hammett constants with larger uncertainties has been proposed and demonstrated. Moreover, the scope of HEP was extended to various neutral pnictogen and chalcogen donors during which transphobia effects were revealed for mixed NHC complexes containing phosphites, arsine and stibine for the first time.

SDS of cas: 500-22-1. About 3-Pyridinecarboxaldehyde, If you have any questions, you can contact Teng, QQ; Ng, PS; Leung, JN; Huynh, HV or concate me.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

I found the field of Chemistry; Science & Technology – Other Topics; Engineering very interesting. Saw the article Ultralow Loading Cobalt-Based Nanocatalyst for Benign and Efficient Aerobic Oxidation of Allylic Alcohols and Biobased Olefins published in 2019.0. Recommanded Product: 500-22-1, Reprint Addresses Tao, DJ (corresponding author), Jiangxi Normal Univ, Coll Chem & Chem Engn, Nanchang 330022, Jiangxi, Peoples R China.; Li, CZ (corresponding author), Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China.. The CAS is 500-22-1. Through research, I have a further understanding and discovery of 3-Pyridinecarboxaldehyde

The synthesis of alpha,beta-unsaturated ketones from aerobic oxidation of allylic alcohols and biobased olefins serves as an important topic in green and sustainable chemistry. In this work, we report the utilization of a sacrificial template ZIF-8 for preparation of mesoporous Co-0.05/N-C material with an ultralow cobalt loading of 0.05 wt %, in which the excellent catalytic performance in aerobic oxidation of alpha-pinene and cinnamyl alcohol was achieved with an 85% yield of verbenone and a yield of cinnamaldehyde, respectively. The results of control experiments and several characterization investigations further illustrate that the sacrificial template ZIF-8 plays a key role to disperse well metallic cobalt in the Co-0.05/N-C-800 catalyst and an appropriate cobalt content of 0.05 wt % is beneficial for benign and efficient aerobic oxidation of various allylic alcohols and biobased olefins. In addition, the Co0.05/N-C-800 catalyst also exhibited good stability and reusability for recovering and reusing at least six times without obvious decrease in catalytic activity. The presented efficient nanocatalyst thus triggers facile synthesis of a series of alpha,beta-unsaturated aldehydes/ketones in high yields.

About 3-Pyridinecarboxaldehyde, If you have any questions, you can contact Zhao, X; Zhou, Y; Huang, K; Li, CZ; Tao, DJ or concate me.. Recommanded Product: 500-22-1

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Formula: C6H5NO. I found the field of Chemistry very interesting. Saw the article Design and synthesis of novel sugar-based nitrogen-containing heterocycles as potential anticancer agents under microwave in water published in 2019.0, Reprint Addresses Du, K (corresponding author), Shaoxing Univ, Sch Chem & Chem Engn, Shaoxing 312000, Peoples R China.; Zheng, H (corresponding author), Hangzhou Normal Univ, Coll Mat Chem & Chem Engn, Hangzhou 310016, Zhejiang, Peoples R China.. The CAS is 500-22-1. Through research, I have a further understanding and discovery of 3-Pyridinecarboxaldehyde.

A series of novel glycosyl nitrogen-containing heterocycles derivatives were designed and synthesized. With the help of microwave, the reaction was carried out in water rapidly and afforded the target compounds in good yields. The acid catalysts that were essential for this kind of reaction under traditional heating method were avoided through this strategy. Preliminary biological evaluation showed that most of the compounds could inhibit the growth of A549 cells, but the inhibition of HepG-2 cells was relatively poor. Notably, compound 2i displayed the best potency with an IC50 value of 3.42 mu M against A549 cell lines, which is comparable with the common anticarcinogen paclitaxel (5.12 mu M). Molecular modeling studies suggested that 2i may bind to the ATP-binding site of epidermal growth factor receptor (EGFR), indicating a rational design strategy. These results provide a starting point for designing glycosyl nitrogen-containing heterocycles as the potential drugs in lung cancer therapy.

Formula: C6H5NO. About 3-Pyridinecarboxaldehyde, If you have any questions, you can contact Liu, J; Wu, CL; Jin, HM; Du, K; Zheng, H or concate me.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Driowya, M; Guillot, R; Bonnet, P; Guillaumet, G in [Driowya, Mohsine; Bonnet, Pascal; Guillaumet, Gerald] Univ Orleans, Inst Chim Organ & Analyt, UMR CNRS 7311, Orleans, France; [Guillot, Regis] Univ Paris Saclay, Univ Paris Sud, Inst Chim Mol & Mat Orsay, UMR CNRS 8182, Orsay, France published Development of Novel and Efficient Processes for the Synthesis of 5-Amino and 5-Iminoimidazo[1,2-a] imidazoles via Three-Component Reaction Catalyzed by Zirconium(IV) Chloride in 2019.0, Cited 48.0. Application In Synthesis of 3-Pyridinecarboxaldehyde. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1.

General and efficient approaches for the synthesis of new 5-amino and 5-iminoimidazo[1,2-a] imidazoles were developed through a three-component reaction of 1-unsubstituted 2-aminoimidazoles with various aldehydes and isocyanides mediated by zirconium(IV) chloride. The protocols were established considering the reactivity of the starting substrate, which varies depending on the presence of a substituent on the 2-aminoimidazole moiety. A library of new N-fused ring systems with wide structural diversification, novel synthetic, and potential pharmacological interest was obtained in moderate to good yields.

Application In Synthesis of 3-Pyridinecarboxaldehyde. About 3-Pyridinecarboxaldehyde, If you have any questions, you can contact Driowya, M; Guillot, R; Bonnet, P; Guillaumet, G or concate me.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

An article High-Pressure-Mediated Thiourea-Organocatalyzed Asymmetric Michael Addition to (Hetero)aromatic Nitroolefins: Prediction of Reaction Parameters by PCP-SAFT Modelling WOS:000544057700023 published article about ION-EXCHANGE-RESIN; ACETIC-ACID; CATALYZED ESTERIFICATION; LACTIC-ACID; CHEMICAL-EQUILIBRIUM; COSOLVENT INFLUENCE; REACTION-KINETICS; SOLVENTS; NITROMETHANE; REDUCTION in [Weinbender, Thomas; Reiser, Oliver] Univ Regensburg, Inst Organ Chem, Univ Str 31, D-93053 Regensburg, Germany; [Knierbein, Michael; Bittorf, Lukas; Held, Christoph; Sadowski, Gabriele] TU Dortmund Univ, Lab Thermodynam, Emil Figge Str 70, D-44227 Dortmund, Germany; [Siewert, Riko; Verevkin, Sergey P.] Univ Rostock, Dept Phys Chem, Dr Lorenz Weg 1, D-18059 Rostock, Germany in 2020.0, Cited 74.0. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1. Recommanded Product: 3-Pyridinecarboxaldehyde

Thiourea-organocatalyzed Michael additions of diethyl malonate to various heteroaromatic nitroolefins (13 examples) have been studied under high-pressure (up to 800 MPa) and ambient pressure conditions. High pressure was conducive to enhanced product yields by a factor of 2-12 at a given reaction time, high reaction rates (reaction times were decreased from 72-24 h down to 4-24 h) and high enantioselectivity. Elucidating the effects of solvents for maximizing reaction rates and yields has been carried out using the Perturbed-Chain Polar Statistical Associating Fluid Theory (PCP-SAFT), allowing for the first time a prediction of the kinetic profiles under high-hydrostatic-pressure conditions.

About 3-Pyridinecarboxaldehyde, If you have any questions, you can contact Weinbender, T; Knierbein, M; Bittorf, L; Held, C; Siewert, R; Verevkin, SP; Sadowski, G; Reiser, O or concate me.. Recommanded Product: 3-Pyridinecarboxaldehyde

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Recently I am researching about PHOSPHINE-PHOSPHITE LIGANDS; CHEMISTRY; OLEFINS; STEREOCHEMISTRY; INTERCONVERSION; DERIVATIVES; MECHANISM; NITRILES; ALKENES, Saw an article supported by the Deutsche Forschungsgemeinschaft (DFG)German Research Foundation (DFG). Formula: C6H5NO. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Frye, NL; Bhunia, A; Studer, A. The CAS is 500-22-1. Through research, I have a further understanding and discovery of 3-Pyridinecarboxaldehyde

Hydrocyanation in the absence of toxic HCN gas is highly desirable. Addressing that challenge, transition-metal-catalyzed transfer hydrocyanation using safe HCN precursors has been developed, but these reagents generally require a Lewis acid for activation, and the control of regioselectivity often remains problematic. In this Letter, a Ni-catalyzed highly Markovnikov-selective transfer hydrocyanation that operates in the absence of any Lewis acid is reported. The readily prepared pro-aromatic 1-isopropylcyclohexa-2,5-diene-1-carbonitrile is used as the HCN source, and the reaction shows a broad substrate scope and high functional group tolerance. Terminal styrene derivatives, dienes, and internal alkynes are converted with good to excellent selectivities. Mechanistic studies provide insights into the origin of the regioselectivity.

Formula: C6H5NO. About 3-Pyridinecarboxaldehyde, If you have any questions, you can contact Frye, NL; Bhunia, A; Studer, A or concate me.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Bilgicli, HG; Taslimi, P; Akyuz, B; Tuzun, B; Gulcin, I in [Bilgicli, Hayriye Genc; Akyuz, Busra] Sakarya Univ, Fac Arts & Sci, Dept Chem, TR-54050 Servidan, Sakarya, Turkey; [Taslimi, Parham] Bartin Univ, Dept Biotechnol, Fac Sci, Bartin, Turkey; [Tuzun, Burak] Cumhuriyet Univ, Dept Chem, Fac Sci, Sivas, Turkey; [Gulcin, Ilhami] Ataturk Univ, Dept Chem, Fac Sci, Erzurum, Turkey published Synthesis, characterization, biological evaluation, and molecular docking studies of some piperonyl-based 4-thiazolidinone derivatives in 2020.0, Cited 51.0. Computed Properties of C6H5NO. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1.

Heterocyclic compounds are of particular importance among pharmacologically active compounds. In this study, some piperonyl-based 4-thiazolidinone derivatives (2a-i) were synthesized and characterized by spectroscopic assays. All molecules were tested as enzyme inhibitory factors. These compounds were effective inhibitors of the enzymes acetylcholinesterase (AChE), alpha-glycosidase (alpha-Gly), and the human carbonic anhydrase I and II isoforms (hCA I and II), with K-i values in the range of 8.90-66.51 nM for alpha-Gly, 94.8-289.5 nM for hCA I, 106.3-304.6 nM for hCA II, and 0.55-2.36 nM for AChE. The synthesized molecules were also studied theoretically. Molecular docking calculations were performed to investigate the interaction between the target protein and molecules. CA inhibitor compounds have been clinically used for almost 60 years as antiglaucoma and diuretic drugs. The inhibition of the AChE enzyme results in the blockage of ACh hydrolysis. On the contrary, the design of inhibitor compounds or/and modulators for AChE is of major interest as it is one of the most popular tools to prevent Alzheimer’s disease.

Computed Properties of C6H5NO. About 3-Pyridinecarboxaldehyde, If you have any questions, you can contact Bilgicli, HG; Taslimi, P; Akyuz, B; Tuzun, B; Gulcin, I or concate me.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

An article Triphenylphosphine Oxide-Catalyzed Selective ,-Reduction of Conjugated Polyunsaturated Ketones WOS:000469034000018 published article about WITTIG REACTION; RECYCLE WASTE; REDUCTION; SEQUENCE; PHEROMONES; REAGENT; ESTERS in [Xia, Xuanshu; Lao, Zhiqi; Toy, Patrick H.] Univ Hong Kong, Dept Chem, Pokfulam Rd, Hong Kong, Peoples R China in 2019.0, Cited 25.0. Category: pyridine-derivatives. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1

The scope of the triphenylphosphine oxide-catalyzed reduction of conjugated polyunsaturated ketones using trichlorosilane as the reducing reagent has been examined. In all cases studied, the ,-C=C double bond was selectively reduced to a C-C single bond while all other reducible functional groups remained unchanged. This reaction was applied to a large variety of conjugated dienones, a trienone, and a tetraenone. Additionally, a tandem one-pot Wittig/conjugate-reduction reaction sequence was developed to produce ,-unsaturated ketones directly from simple building blocks. In these reactions the byproduct of the Wittig reaction served as the catalyst for the reduction reaction. This strategy was then used in the synthesis of naturally occurring moth pheromones to demonstrate its utility in the context of natural-product synthesis.

Category: pyridine-derivatives. About 3-Pyridinecarboxaldehyde, If you have any questions, you can contact Xia, XS; Lao, ZQ; Toy, PH or concate me.

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem

Authors Galiana-Rosello, C; Aceves-Luquero, C; Gonzalez, J; Martinez-Camarena, A; Villalonga, R; de Mattos, SF; Soriano, C; Llinares, J; Garcia-Espana, E; Villalonga, P; Gonzalez-Rosende, ME in AMER CHEMICAL SOC published article about NATURAL-PRODUCTS; INTRACELLULAR ZINC; CORRELATION-ENERGY; IRON CHELATORS; CELL-GROWTH; DNA-DAMAGE; APOPTOSIS; COMPLEXES; DEPLETION; ANALOGS in [Galiana-Rosello, Cristina; Gonzalez, Jorge; Martinez-Camarena, Alvaro; Garcia-Espana, Enrique] Univ Valencia, Inst Ciencia Mol ICMol, Dept Quim Inorgan, Valencia 46980, Spain; [Galiana-Rosello, Cristina; Eugenia Gonzalez-Rosende, Maria] Univ CEU Cardenal Herrera, Fac Ciencias Salud, Dept Farm, C Ramon y Cajal S-N, Valencia 46115, Spain; [Galiana-Rosello, Cristina; Fernandez de Mattos, Silvia; Villalonga, Priam] Univ Illes Balears, Inst Univ Invest Ctencies Salut IUNICS, Canc Cell Biol Lab, Illes Balears 07122, Spain; [Galiana-Rosello, Cristina; Fernandez de Mattos, Silvia; Villalonga, Priam] Inst Invest Sanitaria Illes Balears IdISBa, Illes Balears 07122, Spain; [Villalonga, Ruth] Univ Illes Balears, Dept Quim, Illes Balears 07122, Spain; [Fernandez de Mattos, Silvia] Univ Illes Balears, Dept Biol Fonamental, Illes Balears 07122, Spain; [Soriano, Concepcion; Llinares, Jose] Univ Valencia, Dept Quim Organ, E-46100 Valencia, Spain in 2020.0, Cited 79.0. Recommanded Product: 500-22-1. The Name is 3-Pyridinecarboxaldehyde. Through research, I have a further understanding and discovery of 500-22-1

In vitro viability assays against a representative panel of human cancer cell lines revealed that polyamines L1a and L5a displayed remarkable activity with IC50 values in the micromolar range. Preliminary research indicated that both compounds promoted G1 cell cycle arrest followed by cellular senescence and apoptosis. The induction of apoptotic cell death involved loss of mitochondrial outer membrane permeability and activation of caspases 3/7. Interestingly, L1a and L5a failed to activate cellular DNA damage response. The high intracellular zinc-chelating capacity of both compounds, deduced from the metal specific Zinquin assay and ZnL2+ stability constant values in solution, strongly supports their cytotoxicity. These data along with quantum mechanical studies have enabled to establish a precise structure-activity relationship. Moreover, L1a and L5a showed appropriate drug-likeness by in silico methods. Based on these promising results, L1a and L5a should be considered a new class of zinc-chelating anticancer agents that deserves further development.

About 3-Pyridinecarboxaldehyde, If you have any questions, you can contact Galiana-Rosello, C; Aceves-Luquero, C; Gonzalez, J; Martinez-Camarena, A; Villalonga, R; de Mattos, SF; Soriano, C; Llinares, J; Garcia-Espana, E; Villalonga, P; Gonzalez-Rosende, ME or concate me.. Recommanded Product: 500-22-1

Reference:
Pyridine – Wikipedia,
,Pyridine | C5H5N – PubChem