74708-10-4Relevant academic research and scientific papers
Metalloporphyrin supported on hyper cross-linked polymer: green protocol for reduction of nitroarenes
Hamid, Sheida,Mouradzadegun, Arash
, p. 213 - 221 (2020/08/24)
In the current study, a Pd–porphyrin catalyst was anchored covalently onto functionalized polymeric spine based on a calix[4]resorcinarene. The achieved catalytic system was characterized, and its catalytic activity was investigated in the reduction of nitroarenes. The main advantages of the present work are: using water as green solvent, catalyst reusability, easy refinement of the products, excellent yields, and relatively short reaction times.
A reactive and environmentally friendly protocol for expeditious synthesis of various resorcinarenes using zinc hydrogen sulfate
Mouradzadegun, Arash,Ganjali, Mohammad Reza,Kheirandish, Neda,Abadast, Fatemeh
, p. 377 - 381 (2019/04/03)
In this work, for the first time, metal hydrogen phosphates and sulfates have been studied as effective solid acid catalysts for the condensation of resorcinol with aromatic and aliphatic aldehydes to give tetrameric cyclic products, resorcinarenes, which
A Facile and Green Synthesis of 2,4,6-Triarylpyridine Derivatives Using the Modified Mesoporous Organic Polymer Based on Calix [4]Resorcinarene: As an Efficient and Reusable Heterogeneous Acidic Catalyst
Mouradzadegun,Mostafavi,Ganjali
, p. 187 - 195 (2019/05/27)
Abstract: The work describes an efficient one-pot synthesis of 2,4,6-trisubstituted pyridine derivatives through a three-component catalytic reaction. The procedure involves mesoporous organic polymer based on calix[4]resorcinarene in and functionalized b
Copper-loaded hypercrosslinked polymer decorated with pendant amine groups: A green and retrievable catalytic system for quick [3 + 2] Huisgen cycloaddition in water
Mouradzadegun, Arash,Alsadat Mostafavi, Mahsa
, p. 42522 - 42531 (2016/05/19)
A novel heterogeneous copper catalyst based on a 3D-network polymer containing pendant amine groups was synthesized via post-functionalization of the polymeric backbone followed by incorporation of copper(i) ions. Catalytic activity of the newly designed
Cavitand-Based Polyphenols as Highly Reactive Organocatalysts for the Coupling of Carbon Dioxide and Oxiranes
Martínez-Rodríguez, Luis,Otalora Garmilla, Javier,Kleij, Arjan W.
, p. 749 - 755 (2016/05/09)
A variety of cavitand-based polyphenols was prepared from cheap and accessible aldehyde and resorcinol/pyrogallol reagents to give the respective resorcin[4]- or pyrogallol[4]arenes. The preorganization of the phenolic units allows intra- and intermolecular hydrogen bond (HB) networks that affect both the reactivity and stability of these HB-donor catalysts. Unexpectedly, we found that the resorcin[4]arenes show cooperative catalysis behavior compared to the parent resorcinol in the catalytic coupling of epoxides and CO2 with a significantly higher turnover. At elevated reaction temperatures, the resorcin[4]arene-based catalyst 3 d displays the best catalytic performance with very high turnover numbers and frequencies, combining increased reactivity and stability compared to pyrogallol, and an ample substrate scope. This type of polyphenol structure thus illustrates the importance of a new, highly competitive organocatalyst design to devise sustainable CO2 conversion processes.
Synthesis of a 3D-network polymer supported Bronsted acid ionic liquid based on calix[4]resorcinarene via two post-functionalization steps: A highly efficient and recyclable acid catalyst for the preparation of symmetrical bisamides
Mouradzadegun, Arash,Elahi, Somayeh,Abadast, Fatemeh
, p. 31239 - 31248 (2014/08/05)
In this work, for the first time, a 3D-network polymer-supported Bronsted acid ionic liquid was synthesized via two post-functionalization steps. Initially, the active homogeneous catalyst was chemically immobilized onto a polymeric support based on calix[4]resorcinarene by silylation of the hydroxyl groups to form a cationic polymer that contains imidazolium moieties. The formation of this cationic polymer was confirmed by elemental analysis, scanning electron microscopy (SEM), thermal gravimetric analysis (TGA) and derivative thermogravimetric (DTG) analysis. Subsequently, HSO4 anion was incorporated into the polymer along the imidazolium pendant groups via a well-known ion exchange reaction. Elemental analysis data revealed that the cationic polymer was conveniently loaded with the desired Bronsted acid anion; therefore, it provides a novel heterogeneous acid catalyst for achieving synthetic goals. The immobilized acidic ionic liquid effectively catalyzed the one-pot synthesis of symmetrical bisamides by the multicomponent condensation of two moles of amides with aldehydes. Interestingly, the catalyst exhibited a high turnover number (TON) and turnover frequency (TOF), which were even comparable with that of H2SO4. The unique features of this catalyst, such as superior thermal stability, recyclability, excellent catalytic activity in terms of yield and reaction time, high turnover number and turnover frequency, are potentially important for the applications of this catalyst in the industry. This journal is the Partner Organisations 2014.
Stereospecific synthesis of resorcin[4]arenes and pyrogallol[4]arenes in dynamic thin films
Yasmin, Lyzu,Coyle, Travis,Stubbs, Keith A.,Raston, Colin L.
supporting information, p. 10932 - 10934 (2013/11/19)
Acid catalysed condensation of resorcinol and pyrogallol with aromatic aldehydes using a microfluidic vortex fluidic device (VFD) under continuous flow conditions results in the selective formation of resorcin[4]arenes and pyrogallol[4]arenes as predominantly their C4v isomers. Notably C2v isomers and C2h isomers can be also prepared with the latter being converted to the C4v isomer when the VFD operates in confined mode. The Royal Society of Chemistry 2013.
Microwave-assisted synthesis of calix[4]resorcinarenes
Hedidi, Madani,Hamdi, Safouane M.,Mazari, Tassadit,Boutemeur, Baya,Rabia, Cherifa,Chemat, Farid,Hamdi, Maamar
, p. 5652 - 5655 (2007/10/03)
Microwave-assisted synthesis of calix[4]resorcinarenes by cyclocondensation of various aldehydes and resorcinol catalysed by 12-tungstophosphoric acid type Keggin (H3PW12O40·13H2O) or concentrated HCl is describ
Host-Guest Complexation. 48. Octol Building Blocks for Cavitands and Carcerands
Tunstad, Linda M.,Tucker, John A.,Dalcanale, Enrico,Weiser, Juergen,Bryant, Judi A.,et al.
, p. 1305 - 1312 (2007/10/02)
The scope of limitations of the syntheses of octols 1 by the fourfold condensations of various aldehydes with resorcinol and 2-substituted resorcinols are reported.At most, two stereoisomers of 1 were detected, one with C4v and the other with C
