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RISMechanism and regioselectivity of 1,3-dipolar cycloaddition reactions of bicyclic monoterpenes with aryl and heteroaryl nitrile oxides: a DFT study
The reactivity and regioselectivity of 1,3-dipolar cycloaddition reactions of aryl and heteroaryl nitrile oxides (1a–1c) with bicyclic monoterpenes (R)-(+)-a-pinene (2a) and (S)-(–)-b-pinene (2b) have been investigated by ...
Novel design of recyclable copper(II) complex supported on magnetic nanoparticles as active catalyst for Beckmann rearrangement in poly(ethylene glycol)
Copper complex‐functionalized magnetic core–shell nanoparticles
(Fe3O4@SiO2‐Lig‐Cu) were prepared and characterized using various techniques.
The activity of the new catalyst was tested for the Beckmann ...
1,3-Dipolar cycloaddition reactions between ethyl diazoacetate and substituted alkynes: A density functional theory study
A theoretical study on the reactivity and regioselectivity of 1,3-dipolar cycloaddition reactions of ethyl diazoacetate (EDA) with ethynes (CH ≡ CX, X = H, CH3, n‑But, CF3, CO2Et, C6H5, p‑CH3OC6H4 and p‑NO2C6H4) has been ...
Silica coated magnetic NiFe2O4 nanoparticle supported phosphomolybdic acid; synthesis, preparation and its application as a heterogeneous and recyclable catalyst for the one-pot synthesis of tri- and tetra-substituted imidazoles under solvent free conditi
In this research, a magnetically-recoverable catalyst (NiFe2O4@SiO2–H3PMo12O40) was prepared by
supporting phosphomolybdic acid (H3PMo12O40) onto silica-coated NiFe2O4 nanoparticles. The prepared
sample was ...
Density functional theory study of the regio- and stereoselectivity of 1,3-dipolar cycloaddition reactions between 2-ethylthio-4- phenyl-1-azetin and some substituted nitrile oxides
The mechanism (regio- and stereoselectivity) of 1,3-dipolar cycloaddition (1,3-DC) of 2-ethylthio-4-phenyl-1-azetin 1 with benzonitrile oxide 2a, 2-aminobenzonitrile oxide 2b and 2-azidobenzonitrile oxide 2c has been ...
Silica-coated magnetic NiFe2O4 nanoparticlessupported H3PW12O40; synthesis, preparation, and application as an efficient, magnetic, green catalyst for one-pot synthesis of tetrahydrobenzo[b]pyran and pyrano[2,3-c]pyrazole derivatives
A powerful, magnetic, supported, acid catalyst, NiFe2O4@SiO2–H3PW12O40, was prepared by chemical support of Keggin (H3PW12O40) heteropolyacid (HPA) on silica-coated NiFe2O4 magnetic nanoparticles. XRD, TEM, SEM, VSM, and ...
Covalently Copper(II) Porphyrin Cross-Linked Graphene Oxide: Preparation and Catalytic Activity
In this study, copper(II)-coordinated 5,10,15,20-tetrakis(aminophenyl)porphyrin (CuPPh) as a macrocyclic copper complex was covalently linked to the surface of graphene oxide (GO–CuPPh). This covalently cross-linked catalyst ...
Synthesis, characterization, and investigation of catalytic activity of copper(II) porphyrin graphene oxide for azide–alkyne cycloaddition
A covalently cross-linked graphene oxide (GO) catalyst was prepared by a cross-linking process using nucleophilic reaction of copper(II)‐coordinated 5,10,15,20-tetrakis(aminophenyl)porphyrin (CuPPh) with carboxyl groups ...
Graphene Oxide Immobilized Zr-Organic-Framework: A New and Efficient Catalyst for Biginelli Reaction
Multicomponent reactions (MCRs) have become current research interest to the
synthetic organic chemist owing to their synthetic efficiency, atom economy and
procedural simplicity [1]. MCRs are also an important ...
Polyphosphoric acid supported on silica-coated NiFe2O4 nanoparticles: An efficient and magnetically-recoverable catalyst for N-formylation of amines
A rapid, green and simple method for the N-formylation of various aromatic amines with
formic acid using polyphosphoric acid supported on silica-coated NiFe2O4 magnetic
nanoparticles (NiFe2O4@SiO2–PPA) under ...