Results 11 to 20 of about 75,161 (145)

Synthesis of α-amino amides via α-amino imidoylbenzotriazoles [PDF]

Journal of the Serbian Chemical Society, 2005
Reactions of isonitriles 11a-c with N-(α-aminoalkyl)benzotriazoles 10a-k afford N-(α-aminoimidoyl)benzotriazoles 12a-q which on hydrolysis by dilute hydrochloric acid gave α-amino amides 14a-j.
Katritzky Alan R., Mohapatra Prabhu P., Singh Shailendra, Clemens Nicole, Kirichenko Kostyantyn   +4 more
doaj   +1 more source

Ultrasound-Promoted preparation and application of novel bifunctional core/shell Fe3O4@SiO2@PTS-APG as a robust catalyst in the expeditious synthesis of Hantzsch esters

Scientific Reports, 2023
In this work, D-(–)-α-phenylglycine (APG)-functionalized magnetic nanocatalyst (Fe3O4@SiO2@PTS-APG) was designed and successfully prepared in order to implement the principles of green chemistry for the synthesis of polyhydroquinoline (PHQ) and 1,4 ...
Peyman Shakib, Mohammad G. Dekamin, Ehsan Valiey, Shahriar Karami, Mohammad Dohendou   +4 more
doaj   +1 more source

CuFe2O4@SiO2@L-arginine@Cu(I) as a new magnetically retrievable heterogeneous nanocatalyst with high efficiency for 1,4-disubstituted 1,2,3-triazoles synthesis

Scientific Reports, 2023
A novel magnetic heterogeneous catalyst was synthesized through the immobilization of copper ions onto the l-arginine functionalized CuFe2O4@SiO2. The prepared catalyst was characterized by Fourier Transform Infrared (FT-IR), X-ray diffraction (XRD ...
Fatemeh Salehzadeh, Maryam Esmkhani, Mahsa Zallaghi, Shahrzad Javanshir, Mohammad G. Dekamin   +4 more
doaj   +1 more source

Synthesis of (E)-2-(1H-tetrazole-5-yl)-3-phenylacrylenenitrile derivatives catalyzed by new ZnO nanoparticles embedded in a thermally stable magnetic periodic mesoporous organosilica under green conditions

Scientific Reports, 2022
ZnO nanoparticles embedded in a magnetic isocyanurate-based periodic mesoporous organosilica (Fe3O4@PMO–ICS–ZnO) were prepared through a modified environmentally-benign procedure for the first time and properly characterized by appropriate spectroscopic ...
Sajedeh Safapoor, Mohammad G. Dekamin, Arezoo Akbari, M. Reza Naimi-Jamal   +3 more
doaj   +1 more source

Sulfamic acid pyromellitic diamide-functionalized MCM-41 as a multifunctional hybrid catalyst for melting-assisted solvent-free synthesis of bioactive 3,4-dihydropyrimidin-2-(1H)-ones

Scientific Reports, 2021
This study introduces a practical approach to fabricate a novel hybrid acidic catalyst, namely sulfamic acid pyromellitic diamide-functionalized MCM-41 (MCM-41-APS-PMDA-NHSO3H).
Ehsan Valiey, Mohammad G. Dekamin, Zahra Alirezvani   +2 more
doaj   +1 more source

Dendrons containing boric acid and 1,3,5-tris(2-hydroxyethyl)isocyanurate covalently attached to silica-coated magnetite for the expeditious synthesis of Hantzsch esters

Scientific Reports, 2021
A new multifunctional dendritic nanocatalyst containing boric acid and 1,3,5-tris(2-hydroxyethyl)isocyanurate covalently attached to core–shell silica-coated magnetite (Fe3O4@SiO2@PTS-THEIC-(CH2)3OB(OH)2) was designed and properly characterized by ...
Mahsa Sam, Mohammad G. Dekamin, Zahra Alirezvani   +2 more
doaj   +1 more source

Synthesis of Carboxymethyl Chitosan and Its Derivatives Using KI and/or Ultrasonication

Chemistry Proceedings, 2022
Chitosan is a natural polysaccharide that is mainly obtained from the shell of marine crustaceans including crabs, lobsters, shrimps, etc. Chitosan has been widely used in biomedicine due to its special characteristics of low toxicity, biocompatibility ...
Mahsa Rajabi, Mohammad Dohendou, Mohammad G. Dekamin   +2 more
doaj   +1 more source

Catalytic Enantioselective Approaches to the oxa-Pictet–Spengler Cyclization and Other 3,6-Dihydropyran-Forming Reactions

SynOpen, 2019
This Short Review provides an analysis of the state-of-the-art in catalytic enantioselective oxa-Pictet–Spengler cyclizations. Also discussed are other catalytic reactions providing access to enantio­enriched isochromans and tetrahydropyrano[3,4-b ...
Zhengbo Zhu, Alafate Adili, Chenfei Zhao, Daniel Seidel   +3 more
doaj   +1 more source

Novel magnetic propylsulfonic acid-anchored isocyanurate-based periodic mesoporous organosilica (Iron oxide@PMO-ICS-PrSO3H) as a highly efficient and reusable nanoreactor for the sustainable synthesis of imidazopyrimidine derivatives

Scientific Reports, 2020
In this study, preparation and characterization of a new magnetic propylsulfonic acid-anchored isocyanurate bridging periodic mesoporous organosilica (Iron oxide@PMO-ICS-PrSO3H) is described. The iron oxide@PMO-ICS-PrSO3H nanomaterials were characterized
Arezoo Akbari, Mohammad G. Dekamin, Amene Yaghoubi, Mohammad Reza Naimi-Jamal   +3 more
doaj   +1 more source

Synthesis of New 1,3,5-Triazine-Based 2-Pyrazolines as Potential Anticancer Agents

Molecules, 2018
A new series of 1,3,5-triazine-containing 2-pyrazoline derivatives (8–11)a–g was synthesized by cyclocondensation reactions of [(4,6-bis((2-hydroxyethyl)amino)-1,3,5-triazin-2-yl)amine]chalcones 7a–g with hydrazine hydrate and ...
Leydi M. Moreno, Jairo Quiroga, Rodrigo Abonia, Jonathan Ramírez-Prada, Braulio Insuasty   +4 more
doaj   +1 more source