Results 1 to 10 of about 3,737,155 (255)

Advances in the synthesis of nitrogen-containing heterocyclic compounds by in situ benzyne cycloaddition. [PDF]

open access: yesRSC Adv, 2023
Nitrogen-containing heterocyclic compounds are prevalent in various natural products, medicines, agrochemicals, and organic functional materials.
Yu H, Xu F.
europepmc   +2 more sources

A Review on Medicinally Important Heterocyclic Compounds

open access: yesOpen Medicinal Chemistry Journal, 2022
Heterocyclic compounds account for the most prominent and diverse class of organic compounds. A significant number of heterocyclic compounds have been synthesized up to this point.
Tanzeela Qadir   +4 more
semanticscholar   +1 more source

A Review on Benzimidazole Heterocyclic Compounds: Synthesis and Their Medicinal Activity Applications

open access: yesSynOpen, 2023
Benzimidazole is a heterocyclic compound formed by fusing the benzene ring with an imidazole ring that contains two nitrogen atoms. Benzimidazole and its derivatives are prepared in different ways, including condensation of o-phenylenediamine with ...
Leqaa A. Mohammed   +6 more
semanticscholar   +1 more source

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

open access: yesJournal 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.   +4 more
doaj   +1 more source

Potential Nitrogen-Based Heterocyclic Compounds for Treating Infectious Diseases: A Literature Review

open access: yesAntibiotics, 2022
Heterocyclic compounds are considered as one of the major and most diverse family of organic compounds. Nowadays, the demand for these compounds is increasing day-by-day due to their enormous synthetic and biological applications.
Mohammad Aatif   +5 more
semanticscholar   +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

open access: yesScientific 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   +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

open access: yesScientific 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   +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

open access: yesScientific 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   +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

open access: yesScientific 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   +2 more
doaj   +1 more source

Recent advances on heterocyclic compounds with antiviral properties

open access: yesChemistry of Heterocyclic Compounds, 2021
In recent years several important viral infections have emerged and antiviral chemotherapeutic agents are not sufficiently effective in clinic, leading to serious human diseases and mortality. Therefore, novel antiviral candidates are urgently desirable,
Aramita De, S. Sarkar, A. Majee
semanticscholar   +1 more source

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