79359-42-5Relevant academic research and scientific papers
Sodium chloride: A proficient additive for the synthesis of pyridine derivatives in aqueous medium
Gujar, Jitendra B.,Chaudhari, Mahendra A.,Kawade, Deepak S.,Shingare, Murlidhar S.
, p. 6939 - 6942 (2014)
A facile and convenient synthesis of substituted pyridine derivatives catalysed by NaCl in the presence aqueous media under reflux and ultrasound irradiation has been developed via a one-pot multicomponent reaction, in which four new bonds were formed. Pa
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.
Preclinical Evaluation of the First Adenosine A1 Receptor Partial Agonist Radioligand for Positron Emission Tomography Imaging
Guo, Min,Gao, Zhan-Guo,Tyler, Ryan,Stodden, Tyler,Li, Yang,Ramsey, Joseph,Zhao, Wen-Jing,Wang, Gene-Jack,Wiers, Corinde E.,Fowler, Joanna S.,Rice, Kenner C.,Jacobson, Kenneth A.,Kim, Sung Won,Volkow, Nora D.
, p. 9966 - 9975 (2018/11/23)
Central adenosine A1 receptor (A1R) is implicated in pain, sleep, substance use disorders, and neurodegenerative diseases, and is an important target for pharmaceutical development. Radiotracers for A1R positron emission t
Method for synthesizing polysubstituted pyridine compounds at room temperature
-
Paragraph 0036; 0037, (2018/04/02)
The invention discloses a method for synthesizing polysubstituted pyridine compounds at the room temperature. The method is technically characterized in that ethanediamine/trinitromethane eutectoid isadopted as a catalyst, an ethanol aqueous solution is t
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
System and method for preparing 6-mercapto polysubstituted pyridine derivative through three-component one-pot reaction
-
Paragraph 0088; 0089, (2017/12/28)
The invention discloses a system and method for preparing a 6-mercapto polysubstituted pyridine derivative through a three-component one-pot reaction, belonging to the technical field of organic synthesis. The preparation system for the 6-mercapto polysubstituted pyridine derivative comprises a raw material mixing device, a microwave reaction device, a suction filtration device, a washing device and a vacuum drying device which are sequentially arranged, wherein the microwave reaction device is used for a microwave heating reaction of raw materials in the raw material mixing device; the suction filtration device is used for suction filtration of a reaction product; the washing device and the vacuum drying device are used for washing and vacuum drying of a filter residue obtained after filtering, respectively. According to the invention, aromatic aldehydes, malononitrile and mercapto compounds are used as reaction materials, and the 6-mercapto polysubstituted pyridine derivative is prepared under the catalysis of an alkaline ionic liquid catalyst. The catalyst used in the invention is high in catalytic activity and low in usage amount and cyclic loss; and the prepared derivate has high yield and high purity.
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.
Graphene oxide-TiO2 composite: An efficient heterogeneous catalyst for the green synthesis of pyrazoles and pyridines
Kumari, Shweta,Shekhar, Amiya,Pathak, Devendra D.
, p. 5053 - 5060 (2016/07/06)
A graphene oxide-TiO2 composite (GO-TiO2) has been synthesized and characterized using FT-IR, FT-Raman, XRD, XPS, FESEM, EDX, TEM and N2 adsorption-desorption. GO-TiO2 has been found to be a highly efficient and
