791619-75-5Relevant academic research and scientific papers
Application of novel and reusable Fe3O4@CoII(macrocyclic Schiff base ligand) for multicomponent reactions of highly substituted thiopyridine and 4H-chromene derivatives
Ebrahimiasl, Hakimeh,Azarifar, Davood,Rakhtshah, Jamshid,Keypour, Hassan,Mahmoudabadi, Masoumeh
, (2020/06/08)
In this research study we designed and synthesized CoII(macrocyclic Schiff base ligand containing 1,4-diazepane) immobilized on Fe3O4 nanoparticles as a novel, recyclable, and heterogeneous catalyst. The nanomaterial was f
Natural dolomitic limestone-catalyzed synthesis of benzimidazoles, dihydropyrimidinones, and highly substituted pyridines under ultrasound irradiation
Godugu, Kumar,Gundala, Trivikram Reddy,Mohinuddin Pinjari, Mohammad Khaja,Reddy Nallagondu, Chinna Gangi,Sanapareddy, Lakshmi Reddy,Sri Yadala, Venkata Divya
supporting information, p. 1881 - 1900 (2020/10/02)
Natural dolomitic limestone (NDL) is employed as a heterogeneous green catalyst for the synthesis of medicinally valuable benzimidazoles, dihydropyrimidinones, and highly functionalized pyridines via C–N, C–C, and C–S bond formations in a mixture of ethan
WEB (water extract of banana): An efficient natural base for one-pot multi-component synthesis of 2-amino-3,5-dicarbonitrile-6-thio-pyridines
Allahi, Alireza,Akhlaghinia, Batool
, p. 328 - 336 (2020/10/22)
One-pot multi-component synthesis of 2-amino-3,5-dicarbonitrile-6-thio-pyridines derivatives using WEB (water extract of banana peels ash) as a green catalyst is described. A variety of aromatic aldehydes (with electron-donating and electron-withdrawing groups) in conjunction with aromatic and aliphatic thiols are known to tolerate this reaction condition using WEB. The reaction has simple work up procedure without using toxic solvents.
Amino-3, 5-dicyanopyridines targeting the adenosine receptors ranging from pan ligands to combined A1/A2B partial agonists
Catarzi, Daniela,Varano, Flavia,Varani, Katia,Vincenzi, Fabrizio,Pasquini, Silvia,Dal Ben, Diego,Volpini, Rosaria,Colotta, Vittoria
, (2019/11/05)
The amino-3,5-dicyanopyridine derivatives belong to an intriguing series of adenosine receptor (AR) ligands that has been developed by both academic researchers and industry. Indeed, the studies carried out to date underline the versatility of the dicyanopyridine scaffold to obtain AR ligands with not only a wide range of affinities but also with diverse degrees of efficacies at the different ARs. These observations prompted us to investigate on the structure–activity relationships (SARs) of this series leading to important previously reported results. The present SAR study has helped to confirm the 1H-imidazol-2-yl group at R2 position as an important feature for producing potent AR agonists. Moreover, the nature of the R1 substituent highly affects not only affinity/activity at the hA1 and hA2B ARs but also selectivity versus the other subtypes. Potent hA1 and hA2B AR ligands were developed, and among them, the 2-amino-6-[(1H-imidazol-2-ylmethyl)sulfanyl]-4-[4-(prop-2-en-1-yloxy)phenyl]pyridine-3,5-dicarbonitrile (3) is active in the low nanomolar range at these subtypes and shows a good trend of selectivity versus both the hA2A and hA3 ARs. This combined hA1/hA2B partial agonist activity leads to a synergistic effect on glucose homeostasis and could potentially be beneficial in treating diabetes and related complications.
A convenient Baker yeast accelerated, one-pot synthesis of pentasubstituted thiopyridines
Chavan, Anusaya S.,Kharat, Arun S.,Bhosle, Manisha R.,Mane, Ramrao A.
supporting information, p. 1777 - 1782 (2017/09/23)
Here we report a novel Baker yeast catalyzed one pot cyclocondensation, performed at room temperature in ethanol for obtaining high yields of polyfunctionalized pyridines, 2-amino-4-aryl-3,5-dicyano-6-phenylthiopyridines. The developed protocol obeys cert
Heterogeneous Cu(II)/l-His@Fe3O4 nanocatalyst: A novel, efficient and magnetically-recoverable catalyst for organic transformations in green solvents
Norouzi, Masoomeh,Ghorbani-Choghamarani, Arash,Nikoorazm, Mohsen
, p. 92387 - 92401 (2016/10/11)
A novel, efficient and green Cu(ii)/l-His@Fe3O4 catalyst has been applied successfully in the synthesis of heterocyclic compounds. The resulting catalyst was used in the synthesis of 2,3-dihydroquinazolin-4(1H)-ones, polyhydroquinolines and 2-amino-6-(arylthio)pyridine-3,5-dicarbonitriles as biologically interesting compounds. The present research is focused on investigation of recycling, reusability and stability of the catalyst in phase reactions. The Cu(ii)/l-His@Fe3O4 catalyst was used at least six times with comparable activities to that of fresh catalyst. The chemical composition and the structure of the catalyst were analysed by TGA/DTG, EDS, XRD, VSM, FT-IR and SEM.
Synthesis of 2-amino-4-phenyl-6-(phenylsulfanyl)-3,5-dicyanopyridines by tandem reaction
Hao, Dong,Zhong, Yun-Lei,Shen, Xiao-Peng,Yang, Jin-Ming,Dong, Fang
, p. 587 - 594 (2014/02/14)
A novel basic ionic liquid, 1-(2-aminoethyl)pyridinium hydroxide, containing both Bronsted base and Lewis base sites has been used as an efficient catalyst for the synthesis of 2-amino-4-phenyl-6-(phenylsulfanyl)-3,5- dicyanopyridines. The condensation and oxidation tandem reaction of aldehydes, malononitrile, and thiols, performed in aqueous ethanol, afforded reasonable to good yields within 30-60 min. After the reaction, the catalyst could be recycled and reused. A possible mechanism to account for the tandem reaction is proposed. Graphical abstract: [Figure not available: see fulltext.].
SUBSTITUTED DICYANOPYRIDINES AND USE THEREOF
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Paragraph 0439, (2013/08/28)
The present application relates to novel substituted dicyanopyridines, to processes for their preparation, to their use for the treatment and/or prophylaxis of diseases and to their use for preparing medicaments for the treatment and/or prophylaxis of diseases, preferably for the treatment and/or prophylaxis of cardiovascular disorders.
Multi-component synthesis of 2-amino-6-(alkylthio)pyridine-3,5- dicarbonitriles using Zn(II) and Cd(II) metal-organic frameworks (MOFs) under solvent-free conditions
Thimmaiah, Muralidhara,Li, Peng,Regati, Sridhar,Chen, Banglin,Zhao, John Cong-Gui
experimental part, p. 4870 - 4872 (2012/09/07)
Multi-component synthesis of 2-amino-3,5-dicarbonitrile-6-thio-pyridines has been developed by using the reaction of aldehydes, malononitrile, and thiophenols in the presence of a Zn(II) or a Cd(II) metal-organic framework (MOF) as the heterogeneous catalyst. This protocol tolerates different functional groups on the substrates and does not require the use of any organic solvent. Moreover, the Zn(II) and Cd(II) MOF catalysts can be recovered and reused for a number of runs without loss of activity.
Scandium triflate-catalyzed one-pot multi-component synthesis of 2-amino-6-thiopyridine-3,5-dicarbonitriles
Kottawar, Shrinivas S.,Siddiqui, Shapi A.,Bhusare, Sudhakar R.
, p. 249 - 252 (2013/05/09)
Scandium triflate efficiently promotes a one-pot, three-component condensation of aldehydes, malononitrile, and thiophenols to produce highly substituted pyridines in good yields. This reaction does not involve any hazardous organic solvent and toxic cata
