3696-12-6Relevant articles and documents
Structural characterization of monomers for non-linear optical polymers. X-ray analysis and molecular mechanics calculations of 2-(4-methacryloxy-3- methoxyphenyl)-1,1-dicyanoethylene, 2-(3-methacryloxy-4-methoxyphenyl)-1,1- dicyanoethylene, and 2-(2-meth
Nesterov,Deng,Timofeeva,Antipin, M.Yu.,Clark,Frazier,Penn
, p. 309 - 318 (2000)
The results of molecular mechanics calculations, hyperpolarizabilities calculations, synthesis, and X-ray analysis of three monomers for non-linear optical polymers are presented. All monomers are derivatives of dicyanovinylbenzene with methoxy and methac
A Simplistic Approach for Preparation of Alkylidenemalononitrile Derivatives: Characterization, In silico Studies, Quantum Chemical Evaluation, Molecular Docking, and In vitro Biological Activity Evaluation
Ahmad, Rumana,Azad, Iqbal,Kamal, Azhar,Khan, Abdul Rahman,Khan, Tahmeena,Nasibullah, Malik
, (2020/11/24)
A new and efficient green grinding-based catalyst free Knoevenagel condensation of aldehydes/ketones and malononitrile for the rapid preparation of twelve malononitrile derivatives (C1-C12) is proposed. Characterization of the derivatives was done by sup
Ferrocene-Functionalized Dithiocarbamate Zinc(II) Complexes as Efficient Bifunctional Catalysts for the One-Pot Synthesis of Chromene and Imidazopyrimidine Derivatives via Knoevenagel Condensation Reaction
Anamika,Drew, Michael G. B.,Kumar, Kamlesh,Singh, Nanhai,Yadav, Chote Lal
, p. 6446 - 6462 (2021/05/31)
Four new mononuclear/coordination polymeric (CP) zinc(II) complexes (1-4) of ferrocenyl/pyridyl-functionalized dithiocarbamate ligands, N-ferrocenylmethyl-N-butyl dithiocarbamate (L1), N-ferrocenylmethyl-N-ethylmorpholine dithiocarbamate (L2), N-ferroceny
Effect of supramolecular polymeric aggregation in room temperature ionic liquids (RTILs) on catalytic activity in the synthesis of 4H-chromene derivatives and Knoevenagel condensation
Muhammad, Shoaib,Ali, Firdous Imran,Javed, Muhammad Naveed,Wasim, Agha Arsalan,Bari, Ahmed,Rafique, Faisal,Ilyas, Muhammad Amjad,Riaz, Kashif,Mahmood, Syed Junaid,Ahmed, Amir,Hashmi, Imran Ali
, (2020/10/30)
RTILs exhibit supramolecular self-assembled polymeric aggregation due to noncovalent interactions. The influence of the aggregation behaviour of RTILs on catalytic activity is evident but still poorly understood. The present work focuses on establishing a
LQFM184: A Novel Wide Ultraviolet Radiation Range Absorber Compound
Vinhal, Daniela C.,Ivan de ávila, Renato,Rodrigues, Thaisangela L.,Silva, Andressa K.,Moreira, Larissa C.,Valadares, Marize C.,Luzin, Rangel M.,Li?o, Luciano M.,Gil, Eric de S.,Vaz, Boniek G.,Assis, Rogério J.,Gon?alves, Pablo J.,Isaac, Vera,da Cunha, Luiz C.,Menegatti, Ricardo
, p. 360 - 371 (2020/12/04)
The use of sunscreen has become an indispensable daily routine since UV radiation is a critical environmental stress factors for human skin. This study focused on the design, synthesis, thermal/chemical stability and efficacy/safety evaluations of a new h
Synthesis of 5H-indeno[1,2-b]pyridine derivatives: Antiproliferative and antimetastatic activities against two human prostate cancer cell lines
Charris, Katiuska E.,Rodrigues, Juan R.,Ramírez, Hegira,Fernandez-Moreira, Esteban,ángel, Jorge E.,Charris, Jaime E.
, (2021/05/07)
This study describes the direct synthesis of 2-amino-4-(phenylsubstituted)-5H-indeno[1,2-b]pyridine-3-carbonitrile derivatives 5–21, through sequential multicomponent reaction of aromatic aldehydes, malononitrile, and 1-indanone in the presence of ammonium acetate and acetic acid (catalytic). The biological study showed that compound 10 significantly impeded proliferation of the cell lines PC-3, LNCaP, and MatLyLu. The antimetastatic effects of compound 10 could be related with inhibition of MMP9 in the PC-3 and LNCaP human cell lines. On the basis of a study of the structure–activity relationship of these compounds, we propose that the presence of two methoxy groups at positions 6 and 7 of the indeno nucleus and a 4-hydroxy-3-methoxy phenyl substitution pattern at position 4 of the pyridine ring is decisive for these types of molecules to exert?very good antiproliferative and antimetastatic activities.
A reusable efficient green catalyst of 2d cu-mof for the click and knoevenagel reaction
Maity, Himadri Sekhar,Maity, Suvendu,Naskar, Kaushik,Sinha, Chittaranjan
, (2021/09/07)
[Cu(CPA)(BDC)]n (CPA = 4-(Chloro-phenyl)-pyridin-4-ylmethylene-amine; BDC = 1,4-benzenedicarboxylate) has been synthesized and structurally characterized by single crystal X-Ray diffraction measurement. The structural studies establish the copper (II) containing 2D sheet with (4,4) square grid structure. The square grid lengths are 10.775 and 10.769 ?. Thermal stability is assessed by TGA, and subsequent PXRD data establish the crystallinity. The surface morphology is evaluated by FE-SEM. The N2 adsorption?desorption analysis demonstrates the mesoporous feature (~6.95 nm) of the Cu-MOF. This porous grid serves as heterogeneous green catalyst with superficial recyclability and thermal stability and facilitates organic transformations efficiently such as, Click and Knoevenagel reactions in the aqueous methanolic medium.
Supramolecular polymeric aggregation behavior and its impact on catalytic properties of imidazolium based hydrophilic ionic liquids
Muhammad, Shoaib,Javed, Muhammad Naveed,Ali, Firdous Imran,Bari, Ahmed,Hashmi, Imran Ali
, (2020/01/21)
Ionic Liquids (ILs) self-assemble to form supramolecular polymeric clusters/aggregates. The aggregation behavior of ILs influences its activity in the organic synthesis. However, the precise role of ILs in organic reactions is still unknown. It is, therefore, important to comprehend the supramolecular polymeric aggregation behavior of ILs. We are exploring the supramolecular polymeric aggregation behavior of ILs using Electrospray Ionization Mass Spectrometry (ESI-MS). We have synthesized four hydrophilic ILs (1–4) and investigated their aggregation behavior and its impact on catalytic activity in Carbon-Carbon bond formation (Knoevenagel and Claisen-Schmidt condensation). Here, we show that the aggregation behavior of ILs depends on the type and nature of cation and anion. ESI-MS (?ve) spectra reveals two different type of aggregation i.e. [CnAn+1]? & [A2 + H+]?. We have found that catalytic activity increases with increased [CnAn+1]? supramolecular aggregation. Consequently, highest yield of products obtained in ILs which show decreased anion-anion aggregation [A2 + H+]? abundance in ESI-MS. We anticipate our results to be a starting point for the establishment of desired ILs for organic synthesis.
Introduction of an efficient DABCO-based bis-dicationic ionic salt catalyst for the synthesis of arylidenemalononitrile, pyran and polyhydroquinoline derivatives
Zabihzadeh, Mehdi,Omidi, Atefeh,Shirini, Farhad,Tajik, Hassan,Langarudi, Mohaddeseh Safarpoor Nikoo
, (2020/01/23)
—An affordable DABCO-based bis-dicationic ionic salt ([(DABCO)2C3H5OH]·2Cl) was utilized for the synthesis of arylidenemalononitrile, tetrahydrobenzo[b]pyran, pyrano[2,3-d]-pyrimidinone (thione), dihydropyrano[3,2-c]chrome
Synthesis, in vitro and in silico screening of 2-amino-4-aryl-6-(phenylthio) pyridine-3,5-dicarbonitriles as novel α-glucosidase inhibitors
Ali, Muhammad,Faramarzi, Mohammad Ali,Jabbar, Abdul,Khan, Khalid Mohammed,Larijani, Bagher,Mahdavi, Mohammad,Perveen, Shahnaz,Salar, Uzma,Shamim, Shahbaz,Taha, Muhammad
, (2020/05/16)
Inhibition of α-glucosidase enzyme is of prime importance for the treatment of diabetes mellitus (DM). Apart of many organic scaffolds, pyridine based compounds have previously been reported for wide range of bioactivities. The current study reports a series of pyridine based synthetic analogues for their α-glucosidase inhibitory potential assessed by in vitro, kinetics and in silico studies. For this purpose, 2-amino-4-aryl-6-(phenylthio)pyridine-3,5-dicarbonitriles 1–28 were synthesized and subjected to in vitro screening. Several analogs, including 1–3, 7, 9, 11–14, and 16 showed many folds increased inhibitory potential in comparison to the standard acarbose (IC50 = 750 ± 10 μM). Interestingly, compound 7 (IC50 = 55.6 ± 0.3 μM) exhibited thirteen-folds greater inhibition strength than the standard acarbose. Kinetic studies on most potent molecule 7 revealed a competitive type inhibitory mechanism. In silico studies have been performed to examine the binding mode of ligand (compound 7) with the active site residues of α-glucosidase enzyme.