Advances in pyranopyrazole scaffolds' syntheses using sustainable catalysts—a review

RK Ganta, N Kerru, S Maddila, SB Jonnalagadda - Molecules, 2021 - mdpi.com
Heterogeneous catalysis plays a crucial role in many chemical processes, including
advanced organic preparations and the design and synthesis of new organic moieties …

Carbon‐support‐based heterogeneous nanocatalysts: synthesis and applications in organic reactions

A Bahuguna, A Kumar… - Asian Journal of Organic …, 2019 - Wiley Online Library
Carbon‐based‐materials, owing to their wide availability and low cost, have been utilized for
a variety of applications including heterogeneous catalysis. Various carbonaceous materials …

Morpholine triflate promoted one-pot, four-component synthesis of dihydropyrano [2, 3-c] pyrazoles

CF Zhou, JJ Li, WK Su - Chinese Chemical Letters, 2016 - Elsevier
A one-pot, four-component reaction of ethyl acetoacetate, hydrazine hydrate, aldehydes,
and malononitrile was discussed using Lewis acid catalyst morpholine triflate (MorT) to …

Synthesis of new zirconium magnetic nanocomposite as a bioactive agent and green catalyst in the four-component synthesis of a novel multi-ring compound …

M Asiri, AG Abdulsalam, M Kahtan, F Alsaikhan… - Nanomaterials, 2022 - mdpi.com
New nanocomposites containing zirconium were synthesized using microwave irradiation.
Their structure was confirmed by vibrating sample magnetometer (VSM) curves, X-ray …

Acidic ionic liquids immobilized on nano silica sulfuric acid for highly effective catalytic synthesis of 4H-pyrano[2,3-c]pyrazole and dihydropyrano[c]chromene …

N Iravani, M Keshavarz, LA Taib - Research on Chemical Intermediates, 2023 - Springer
We report a simple, clean, and straightforward method for the non-covalent immobilization of
protic acidic ionic liquids on nano silica sulfuric acid. Initially, two organic zwitterions were …

Amino acid ionic liquid‐based titanomagnetite nanoparticles: An efficient and green nanocatalyst for the synthesis of 1,4‐dihydropyrano[2,3‐c]pyrazoles

D Azarifar, O Badalkhani… - Applied Organometallic …, 2018 - Wiley Online Library
The amino acid ionic liquid tetrabutylammonium asparaginate (TBAAsp) was immobilized
on titanomagnetite (Fe3− x Ti x O4) nanoparticles in a facile one‐pot process using an …

Novel SO3H-functionalized phenanthrolinum-phosphotungstate ionic liquid for highly promoted three-component synthesis of 2H-indazolo[2,1-b]phthalazine-triones

N Iravani, M Keshavarz, A Parhami - Research on Chemical Intermediates, 2019 - Springer
A novel heteropolyanion-based Brønsted acidic ionic liquid material [PhBS] 3 PW 12 O 40,
butane mono-sulfoacid-functionalized phenanthrolinum salt of phosphortungstate catalyst …

An Overview of Synthetic Routes of Pharmaceutically Important Pyranopyrazoles

S Iqbal, S Kiran, A Anwar, S Abrar… - Current Medicinal …, 2022 - ingentaconnect.com
Pyranopyrazoles are bicyclic nitrogen-containing heterocycles having broadspectrum
bioactivities, which may act as anti-cancer, anti-inflammatory, antibacterial, antifungal …

A green chemoselective one-pot protocol for expeditious synthesis of symmetric pyranodipyrimidine derivatives using ZrOCl2. 8H2O

M Rimaz, H Mousavi, M Behnam… - Current Chemistry …, 2016 - m.growingscience.com
A convenient, highly efficient and time economic method has been described for the chemo-
and regioselective synthesis of 5-aryloyl-1, 3, 7, 9-tetraalkyl-2, 8-dithioxo-2, 3, 8, 9-tetrahydro …

[PDF][PDF] Cuo nanoparticles as an efficient catalyst for the synthesis of flavanones

AZ Ahmady, M Keshavarz, M Kardani… - Orient. J …, 2015 - pdfs.semanticscholar.org
CuO nanoparticle was found to be an efficient catalyst for the synthesis of flavanones
derivatives from the reactions between 2-hydroxyacetophenones and aromatic aldehydes at …