Six-membered ring systems: With O and/or S atoms DOI
Clementina M.M. Santos, Artur M. S. Silva

Progress in heterocyclic chemistry, Journal Year: 2023, Volume and Issue: unknown, P. 493 - 568

Published: Jan. 1, 2023

Language: Английский

l–aspartic acid chelan–Cu (II) complex coted on ZrFe2O4 MNPs catalyzed one–pot annulation and cooperative geminal-vinylogous anomeric–based oxidation reactions DOI
Masoud Mohammadi, Arash Ghorbani‐Choghamarani,

Noorullah Hussain–Khil

et al.

Journal of Physics and Chemistry of Solids, Journal Year: 2023, Volume and Issue: 177, P. 111300 - 111300

Published: March 2, 2023

Language: Английский

Citations

28
Base-Mediated Cascade Lactonization/1,3-Dipolar Cycloaddition Pathway for the One-Pot Assembly of Coumarin-Functionalized Pyrrolo[2,1-a]isoquinolines DOI
Qiang Tang, Yanan Liu,

Binbin Fei

et al.

The Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: 89(12), P. 8420 - 8434

Published: June 5, 2024

An elegant and highly concise strategy for the construction of coumarin-functionalized pyrrolo[2,1-a]isoquinolines from available propargylamines isoquinolinium N-ylides has been disclosed. In this reaction, acted as a C2 synthon to form coumarin ring well 1,3-dipole construct pyrrole in single pot. This cascade process involves 1,4-conjugate addition/lactonization/1,3-dipolar cycloaddition four chemical bonds (one C–O bond three C–C bonds) two new heterocyclic skeletons. Additionally, most these compounds showed good fluorescence properties exhibited high molar extinction coefficient large Stokes shifts.

Language: Английский

Citations

6
Review on advancements of pyranopyrazole: synthetic routes and their medicinal applications DOI
Ashok Yadav, Ashishkumar P. Katariya, Anant B. Kanagare

et al.

Molecular Diversity, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 18, 2024

Language: Английский

Citations

4
Lewis Acid-Catalyzed 1,4-Addition and Annulation of 4-Hydroxy-coumarins with o-Hydroxyphenyl Propargyl Amines: Entry to Regio-Selective Synthesis of Furano[3,2-c]coumarins and Pyrano[3,2-c]coumarins DOI
Ganesh Shivayogappa Sorabad, Ding‐Yah Yang

The Journal of Organic Chemistry, Journal Year: 2023, Volume and Issue: 88(7), P. 4730 - 4742

Published: March 20, 2023

A facile and regioselective Lewis acid-catalyzed cascade annulation of o-hydroxyphenyl propargyl amines with 4-hydroxycoumarin to afford furano[3,2-c]coumarin pyrano[3,2-c]coumarin derivatives is reported. The reaction presumably proceeds by the conjugate addition in situ-generated alkynyl o-quinone methide followed intramolecular 5-exo-dig 6-endo-dig form furano[3,2-c]coumarins pyrano[3,2-c]coumarins, respectively. prepared o-hydroxyl substituted pyrano[3,2-c]coumarins could be readily transformed into corresponding coumarin-derived dioxabicycles acid-mediated cyclization.

Language: Английский

Citations

8
Post-synthetic generation of nanomagnetized tetraaza-copper (II): as a novel heterogeneous catalyst for synthesis of fused N-heterocycles DOI

Ahmed Talal Ali,

Ahmed Ibrahim Hamzah,

A. H. Shather

et al.

Research on Chemical Intermediates, Journal Year: 2024, Volume and Issue: 50(3), P. 1371 - 1391

Published: Feb. 12, 2024

Language: Английский

Citations

2
Copper-Catalyzed Three-Component Tandem Cyclization for One-Pot Synthesis of Indole-Benzofuran Bis-Heterocycles DOI
Peng Ma, Yuhang Wang, Jianhui Wang

et al.

The Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 22, 2024

A one-pot, three-component synthesis of indole-benzofuran bis-heterocycles from terminal alkynes, salicylaldehydes, and indoles has been developed via copper-catalyzed tandem annulation. This catalytic system utilizes readily available starting materials, enabling predictable with broad substrate versatility, excellent regiocontrol, gram-scale amenability. The reaction proceeds a sequential pathway involving A3 coupling, 1,4-conjugate addition, 5-exo-dig cyclization.

Language: Английский

Citations

2
Amine-catalyzed metal-free deamination of propargylamines with water toward chalcones DOI
Pengyu Zhou, Liliang Huang,

Yujuan Xie

et al.

Molecular Catalysis, Journal Year: 2022, Volume and Issue: 534, P. 112808 - 112808

Published: Nov. 18, 2022

Language: Английский

Citations

9
Modular synthesis of conjugated enamidines and cascade annulation toward benzofuran-3-oxoacetate DOI
Yao Liu, Ruiqi Wang, Qinheng Zheng

et al.

Organic Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 11(7), P. 2047 - 2053

Published: Jan. 1, 2024

A three-component reaction of aryne, DMF and isonitrile for the synthesis otherwise inaccessible chemotype, conjugated enamidines, is developed. Incubation with a Brønsted acid causes cascade skeleton rearrangement enamidines to benzofuran-3-oxoacetates.

Language: Английский

Citations

1
Recent Highlights in the Synthesis and Biological Significance of Pyrazole Derivatives DOI Creative Commons
Ziad Moussa, Mani Ramanathan,

Shaikha Mohammad Alharmoozi

et al.

Heliyon, Journal Year: 2024, Volume and Issue: 10(20), P. e38894 - e38894

Published: Oct. 1, 2024

Language: Английский

Citations

1
Palladium Immobilized on Functionalized Halloysite: A Robust Catalyst for Ligand Free Suzuki–Miyaura Cross Coupling and Synthesis of Pyrano[2,3-c]pyrazole Motifs via Four Component Cascade Reaction and their In-silico Antitubercular Screening DOI
Pawan Kumar,

Sakshi Panhotra,

Muskan Muskan

et al.

Applied Catalysis A General, Journal Year: 2024, Volume and Issue: unknown, P. 120003 - 120003

Published: Oct. 1, 2024

Language: Английский

Citations

1