Synthesis and characterization of graphitic carbon nitride supported Tris(hydroxymethyl)aminomethanes) g-C3N4/THAM) as a novel catalyst for the synthesis of poly hydroquinoline and pyranopyrazole derivatives DOI

Mohammad taghi bagherian jamnani,

Rahimeh Hajinasiri,

Hossein Ghafuri

et al.

Polyhedron, Journal Year: 2022, Volume and Issue: 221, P. 115878 - 115878

Published: April 29, 2022

Language: Английский

Recent advances in multi-component reactions and their mechanistic insights: a triennium review DOI

Stephy Elza John,

Shivani Gulati, Nagula Shankaraiah

et al.

Organic Chemistry Frontiers, Journal Year: 2021, Volume and Issue: 8(15), P. 4237 - 4287

Published: Jan. 1, 2021

This review summarizes the recent developments in MCRs, incorporating different strategies along with their mechanistic aspects.

Language: Английский

Citations

260

Two decades of recent advances of Ugi reactions: synthetic and pharmaceutical applications DOI Creative Commons

Manar Ahmed Fouad,

Hamida Abdel‐Hamid, Mohammed Salah Ayoup

et al.

RSC Advances, Journal Year: 2020, Volume and Issue: 10(70), P. 42644 - 42681

Published: Jan. 1, 2020

Multicomponent reactions (MCRs) are powerful synthetic tools in which more than two starting materials couple with each other to form multi-functionalized compounds a one-pot process, the so-called "tandem", "domino" or "cascade" reaction, utilizing an additional step without changing solvent, sequential-addition procedure, limit number of steps, while increasing complexity and molecular diversity, highly step-economical reactions. The Ugi one most common multicomponent reactions, has recently fascinated chemists high diversity brought by its four- three-component-based isonitrile. reaction been introduced organic synthesis as novel, efficient useful tool for preparation libraries multifunctional peptides, natural products, heterocyclic stereochemistry control. In this review, we highlight recent advances last decades from 2000-2019, mainly linear cyclic versatile ring sizes, well enantioselective Meanwhile, applications these pharmaceutical trials also discussed.

Language: Английский

Citations

140

Magnetically recoverable catalysts for efficient multicomponent synthesis of organosulfur compounds DOI Creative Commons
Fadhil Faez Sead, Vicky Jain, Anjan Kumar

et al.

RSC Advances, Journal Year: 2025, Volume and Issue: 15(5), P. 3928 - 3953

Published: Jan. 1, 2025

This review studies magnetically recoverable catalysts designed for the efficient multicomponent synthesis of organosulfur compounds. These enhance process by combining efficiency with environmental sustainability.

Language: Английский

Citations

7

Catalytic Approaches to Multicomponent Reactions: A Critical Review and Perspectives on the Roles of Catalysis DOI Creative Commons
Brenno A. D. Neto,

Rafael O. Rocha,

Marcelo O. Rodrigues

et al.

Molecules, Journal Year: 2021, Volume and Issue: 27(1), P. 132 - 132

Published: Dec. 27, 2021

In this review, we comprehensively describe catalyzed multicomponent reactions (MCRs) and the multiple roles of catalysis combined with key parameters to perform these transformations. Besides improving yields shortening reaction times, is vital achieving greener protocols furthering MCR field research. Considering that MCRs typically have two or more possible pathways explain transformation, essential for selecting a route avoiding byproduct formation. Key parameters, such as temperature, catalyst amounts reagent quantities, were analyzed. Solvent effects, which are likely most neglected topic in MCRs, well their catalysis, critically discussed. Stereocontrolled rarely observed without presence catalytic system, also presented discussed review. Perspectives on use systems improved finally presented.

Language: Английский

Citations

59

Visible-Light-Mediated Formal Carbene Insertion Reaction: Enantioselective Synthesis of 1,4-Dicarbonyl Compounds Containing All-Carbon Quaternary Stereocenter DOI
Hua Zhang,

Zheyuan Wang,

Zirui Wang

et al.

ACS Catalysis, Journal Year: 2022, Volume and Issue: 12(9), P. 5510 - 5516

Published: April 25, 2022

We developed an efficient visible-light-mediated formal carbene insertion reaction of 1,3-diketones with diazoesters for the construction enantioenriched 1,4-dicarbonyl compounds a quaternary carbon center. Combining visible light and Brønsted acid catalyst, chiral were achieved in good yields high enantioselectivities by photochemical transfer protocol.

Language: Английский

Citations

43

Chitosan-EDTA-Cellulose network as a green, recyclable and multifunctional biopolymeric organocatalyst for the one-pot synthesis of 2-amino-4H-pyran derivatives DOI Creative Commons
Negin Rostami, Mohammad G. Dekamin, Ehsan Valiey

et al.

Scientific Reports, Journal Year: 2022, Volume and Issue: 12(1)

Published: May 23, 2022

Abstract In this research, cellulose grafted to chitosan by EDTA (Cs-EDTA-Cell) bio-based material is reported and characterized a series of various methods techniques such as FTIR, DRS-UV–Vis, TGA, FESEM, XRD EDX analysis. fact, the Cs-EDTA-Cell network more thermally stable than pristine or chitosan. There plenty both acidic basic sites on surface biodegradable network, multifunctional organocatalyst, proceed three-component synthesis 2-amino-4 H -pyran derivatives at room temperature in EtOH. The nanocatalyst can be easily recovered from reaction mixture using filtration reused for least five times without significant decrease its catalytic activity. general, heterogeneous catalyst, demonstrated excellent activity an environmentally-benign solvent afford desired products short required simple experimental work-up procedure compared many protocols similar systems.

Language: Английский

Citations

41

An update on chiral phosphoric acid organocatalyzed stereoselective reactions DOI
Eddy I. Jiménez

Organic & Biomolecular Chemistry, Journal Year: 2023, Volume and Issue: 21(17), P. 3477 - 3502

Published: Jan. 1, 2023

This review article presents an in-depth analysis of the strategies and methodologies for using chiral phosphoric acids as organocatalysts in asymmetric syntheses from recent literature.

Language: Английский

Citations

32

Cobalt(III)-Catalyzed Diastereo- and Enantioselective Three-Component C–H Functionalization DOI
Ana G. Herraiz, Nicolai Cramer

ACS Catalysis, Journal Year: 2021, Volume and Issue: 11(19), P. 11938 - 11944

Published: Sept. 13, 2021

Catalytic enantioselective C–H functionalization has recently become a tool for the creation of stereogenic centers. The steep increase in molecular complexity multicomponent reactions matches very well with asymmetric functionalizations, but realization such processes remains large challenge. We describe diastereoselective and highly three-component catalyzed by an earth-abundant Co(III) complex equipped chiral cyclopentadienyl ligand (Cpx). transformation provides rapid access to substituted β-hydroxyketones using three readily accessible starting materials. outlined reactivity CpxCo(III) catalysis shows higher exploitable propensity selective additions across carbonyls contrast chemistry Rh(III).

Language: Английский

Citations

55

Enantioselective Au(I)-Catalyzed Multicomponent Annulations via Tethered Counterion-Directed Catalysis DOI
Zhenhao Zhang, Nazarii Sabat, Gilles Frison

et al.

ACS Catalysis, Journal Year: 2022, Volume and Issue: 12(7), P. 4046 - 4053

Published: March 16, 2022

Gold(I) complexes of a chiral phosphoric acid-functionalized phosphine the CPA-Phos series enable enantioselective multicomponent reactions between aldehydes, hydroxylamines and cyclic yne-enones, leading to 3,4-dihydro-1H-furo[3,4-d][1,2]oxazines. This represents rare example highly reaction in gold(I) catalysis. The proceed at low catalyst loading provide high yields, total diastereoselectivity, enantiomeric excesses up 99%. Silver-free conditions can be applied. method has very broad scope as it applies both aliphatic aromatic aldehydes hydroxylamines, variety yne-enone-derived oximes. DFT calculations complement this study enlighten reactivity issues mechanistic pathways.

Language: Английский

Citations

38

Enantioselective Ni‐Catalyzed Three‐Component Dicarbofunctionalization of Alkenes DOI Open Access

Zhan Dong,

Liangliang Song, Liang‐An Chen

et al.

ChemCatChem, Journal Year: 2023, Volume and Issue: 15(18)

Published: Aug. 3, 2023

Abstract Asymmetric multicomponent reactions are considered as efficient protocols for constructing complex chiral molecules because of their step‐ and atom‐economy. Nickel‐catalyzed asymmetric three‐component dicarbofunctionalization alkenes has been well developed in recent years, which is used the area total synthesis natural products late‐stage modification drugs rapid incorporation sp 3 ‐enriched carbon centers. In this concept, significant breakthroughs field summarized, together with related mechanisms. Moreover, remaining challenges potential opportunities also highlighted.

Language: Английский

Citations

17