Arylglyoxals in synthesis of heterocyclic compounds
Heterocycles are an extraordinarily important class of compounds, making up more than half
of all known organic compounds. Heterocycles are present in a wide variety of drugs, most …
of all known organic compounds. Heterocycles are present in a wide variety of drugs, most …
ASGE guideline for infection control during GI endoscopy
The Quality Assurance in Endoscopy Committee of the American Society for Gastrointestinal
Endoscopy (ASGE) updated and revised this document, which was originally prepared by …
Endoscopy (ASGE) updated and revised this document, which was originally prepared by …
Synthesis of dihydropyrimidinones and thiones by multicomponent reactions: strategies beyond the classical Biginelli reaction
JP Wan, Y Liu - Synthesis, 2010 - thieme-connect.com
The three-component Biginelli reaction for the synthesis of dihydropyrimidinone and
corresponding dihydropyrimidinethiones (DHPMs) has been known for more than a century …
corresponding dihydropyrimidinethiones (DHPMs) has been known for more than a century …
Biginelli reaction: a green perspective
The Biginelli Reaction is a one-pot acid catalysed cyclocondensation of β-keto ester, urea
and aromatic aldehyde which leads to the synthesis of functionalised 3, 4-dihydro-2 (H) …
and aromatic aldehyde which leads to the synthesis of functionalised 3, 4-dihydro-2 (H) …
Synthesis and characterization of sulfonated-phenylacetic acid coated Fe3O4 nanoparticles as a novel acid magnetic catalyst for Biginelli reaction
F Zamani, E Izadi - Catalysis Communications, 2013 - Elsevier
In this paper, we wish to report the synthesis and characterization of sulfonated-phenylacetic
acid coated on Fe 3 O 4 nanoparticles by a simple method. This catalyst was effectively …
acid coated on Fe 3 O 4 nanoparticles by a simple method. This catalyst was effectively …
Perlite: A cheap natural support for immobilization of sulfonic acid as a heterogeneous solid acid catalyst for the heterocyclic multicomponent reaction
Perlite sulfonic acid (Perlite-SO 3 H (PeSA)) has been synthesized by grafting the sulfonic
groups on the perlite surface as naturally and cheap support to produce novel …
groups on the perlite surface as naturally and cheap support to produce novel …
Graphite catalyzed solvent free synthesis of dihydropyrimidin-2 (1H)-ones/thiones and their antidiabetic activity
A solvent free three component condensation reaction between an aldehyde, ethyl
acetoacetate and urea catalyzed by graphite, a green catalyst is described for the synthesis …
acetoacetate and urea catalyzed by graphite, a green catalyst is described for the synthesis …
Preparation and characterization of bentonite/PS-SO3H nanocomposites as an efficient acid catalyst for the Biginelli reaction
RJ Kalbasi, AR Massah, B Daneshvarnejad - Applied Clay Science, 2012 - Elsevier
A bentonite/PS-SO3H nanocomposite was prepared and used as an acid catalyst for the
Biginelli reaction under solvent-free conditions. This acid catalyst was characterized by …
Biginelli reaction under solvent-free conditions. This acid catalyst was characterized by …
Design, synthesis and vasorelaxant evaluation of novel coumarin–pyrimidine hybrids
KM Amin, FM Awadalla, AAM Eissa… - Bioorganic & medicinal …, 2011 - Elsevier
The main objective of the present work depends on the hybridization of coumarin moiety as
a vasorelaxant scaffold and pyrimidine ring with known potential cardiovascular activity in …
a vasorelaxant scaffold and pyrimidine ring with known potential cardiovascular activity in …
Anti‐Proliferative 1, 4‐Dihydropyridine and Pyridine Derivatives Synthesized through a Catalyst‐Free, One‐Pot Multi‐Component Reaction
In this study, we explored the catalyst‐free one‐pot multi‐component synthesis of 1, 4‐
dihydropyridine derivatives by following green chemistry protocol. The present approach …
dihydropyridine derivatives by following green chemistry protocol. The present approach …