Results 21 to 30 of about 75,161 (145)

Synthesis of nanocellulose aerogels and Cu-BTC/nanocellulose aerogel composites for adsorption of organic dyes and heavy metal ions

Scientific Reports, 2021
MOFs compounds with open metal sites, particularly Cu-BTC, have great potential for adsorption and catalysis applications. However, the powdery morphology limits their applications. One of the almost new ways to overcome this problem is to trap them in a
Nuhaa Shaheed, Shahrzad Javanshir, Maryam Esmkhani, Mohammad G. Dekamin, Mohammad Reza Naimi-Jamal   +4 more
doaj   +1 more source

Chitosan-EDTA-Cellulose bio-based network: A recyclable multifunctional organocatalyst for green and expeditious synthesis of Hantzsch esters

Carbohydrate Polymer Technologies and Applications, 2023
The cellulose grafted to chitosan by ethylenediaminetetraacetic acid (Cs-EDTA-Cell) material was prepared and characterized by different spectroscopic, microscopic or analytical methods and techniques including Fourier transform infrared (FTIR) and ...
Negin Rostami, Mohammad G. Dekamin, Ehsan Valiey   +2 more
doaj   +1 more source

Design and characterization of an urea-bridged PMO supporting Cu(II) nanoparticles as highly efficient heterogeneous catalyst for synthesis of tetrazole derivatives

Scientific Reports, 2022
In this work, a new periodic mesoporous organosilica with urea-bridges produced by the reaction of (3-aminopropyl)triethoxysilane and toluene-2,4-diisocyanate (APS-TDU-PMO) is introduced.
Ehsan Valiey, Mohammad G. Dekamin
doaj   +1 more source

Fe3O4/SiO2 decorated trimesic acid-melamine nanocomposite: a reusable supramolecular organocatalyst for efficient multicomponent synthesis of imidazole derivatives

Scientific Reports, 2023
This article describes supramolecular Fe3O4/SiO2 decorated trimesic acid-melamine (Fe3O4/SiO2-TMA-Me) nanocomposite that can be prepared with features that combine properties of different materials to fabricate a structurally unique hybrid material.
Babak Fattahi, Mohammad G. Dekamin
doaj   +1 more source

Traceless Redox-Annulations of Alicyclic Amines

SynOpen, 2020
Amines such as 1,2,3,4-tetrahydroisoquinoline undergo redox­-neutral annulations with ortho-(nitromethyl)benzaldehyde. Benzoic­ acid acts as a promoter in these reactions, which involve concurrent amine α-C–H bond and N–H bond functionalization ...
Dillon R. L. Rickertsen, Longle Ma, Anirudra Paul, Khalil A. Abboud, Daniel Seidel   +4 more
doaj   +1 more source

Synthesis of New Oxindoles and Determination of Their Antibacterial Properties

Heteroatom Chemistry, 2020
A versatile method for the synthesis of new oxindoles was developed by the reaction between substituted isatins and 5-aminopyrazoles. The reaction was carried out at room temperature in ethanol using p-toluenesulfonic acid as the catalyst.
Pablo E. Romo, Braulio Insuasty, Rodrigo Abonia, María del Pilar Crespo, Jairo Quiroga   +4 more
doaj   +1 more source

Highly Efficient and Diastereoselective Synthesis of New Pyrazolylpyrrolizine and Pyrazolylpyrrolidine Derivates by a Three-Component Domino Process

Molecules, 2014
Diastereoselective reactions between 4-formylpyrazoles, N-substituted maleimides and glycine derivates led to new series of pyrazolyldipyrrolo [3,4-a:3',4'-f]pyrrolizines and pyrazolylpyrrolo[3,4-c]pyrroles in good yields.
Jairo Quiroga, Jaime Gálvez, Rodrigo Abonia, Braulio Insuasty, Alejandro Ortíz, Justo Cobo, Manuel Nogueras   +6 more
doaj   +1 more source

Microwave-Assisted Synthesis of Novel Pyrazolo[3,4-g][1,8]naphthyridin-5-amine with Potential Antifungal and Antitumor Activity

Molecules, 2015
The microwave assisted reaction between heterocyclic o-aminonitriles 1 and cyclic ketones 2 catalyzed by zinc chloride led to new series of pyrazolo[3,4-b] [1,8]naphthyridin-5-amines 3 in good yields.
Paola Acosta, Estefanía Butassi, Braulio Insuasty, Alejandro Ortiz, Rodrigo Abonia, Susana A. Zacchino, Jairo Quiroga   +6 more
doaj   +1 more source

Triazine: An Important Building Block of Organic Materials for Solar Cell Application

Molecules, 2022
Since the beginning of the 21st century, triazine-based molecules have been employed to construct different organic materials due to their unique optoelectronic properties. Among their applications, photovoltaics stands out because of the current need to
Valeria Dávila Cerón, Luis Alberto Illicachi, Braulio Insuasty   +2 more
doaj   +1 more source

Synthesis and in Vitro Antitumor Activity of a Novel Series of 2-Pyrazoline Derivatives Bearing the 4-Aryloxy-7-chloroquinoline Fragment

Molecules, 2014
A new series of NH-pyrazoline derivatives 6 was synthesized by cyclocondensation reaction of novel [(7-chloroquinolin-4-yl)oxy]chalcones 5 with hydrazine hydrate.
Alba Montoya, Jairo Quiroga, Rodrigo Abonia, Manuel Nogueras, Justo Cobo, Braulio Insuasty   +5 more
doaj   +1 more source