Multicomponent reactions and photo/electrochemistry join forces: atom economy meets energy efficiency

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(6), P. 2313 - 2382

Published: Jan. 1, 2022

Visible-light photoredox catalysis has been regarded as an extremely powerful tool in organic chemistry, bringing the spotlight back to radical processes. The versatility of photocatalyzed reactions already demonstrated be effective providing alternative routes for cross-coupling well multicomponent reactions. photocatalyst allows generation high-energy intermediates through light irradiation rather than using highly reactive reagents or harsh reaction conditions. In a similar vein, electrochemistry experienced fruitful renaissance generating without need any catalyst. Such milder approaches pose basis toward higher selectivity and broader applicability. electrochemical reactions, species acts starter cascade events. This diverse reactivity use is usually not covered by classical methods. Owing availability cheaper more standardized photo- reactors, easily scalable flow-setups, it surprising that these two fields have become areas increased research interest. Keeping view, this review aimed at overview synthetic design MCRs involving and/or activation crucial step with particular focus on choice difunctionalized reagent.

Language: Английский

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Visible‐Light‐Mediated Oxidative Amidation of Aldehydes by Using Magnetic CdS Quantum Dots as a Photocatalyst

Chemistry - A European Journal, Journal Year: 2021, Volume and Issue: 27(17), P. 5483 - 5491

Published: Jan. 6, 2021

Abstract A magnetic CdS quantum dot (Fe 3 O 4 /polydopamine (PDA)/CdS) was synthesized through a facile and convenient method from inexpensive starting materials. Characterization of the prepared catalyst performed by means FTIR spectroscopy, XRD, SEM, TEM, energy‐dispersive X‐ray vibrating‐sample magnetometer techniques. Fe /PDA/CdS found to be highly active photocatalyst for amidation aromatic aldehydes using air as clean oxidant under mild conditions. The can recovered separation successfully reused five cycles without considerable loss its catalytic activity.

Language: Английский

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Copper anchored on phosphorus g-C₃N₄ as a highly efficient photocatalyst for the synthesis of N-arylpyridin-2-amines

Green Chemistry, Journal Year: 2021, Volume and Issue: 23(2), P. 1041 - 1049

Published: Jan. 1, 2021

A copper modified phosphorus doped g-C₃N₄ (Cu/P-CN) has been prepared and identified as an efficient catalyst for the synthesis of N-arylpyridin-2-amine derivatives by reaction 2-aminopyridine aryl boronic acid under irradiation blue light.

Language: Английский

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Visible Light Mediated Synthesis of Oxindoles

Advanced Synthesis & Catalysis, Journal Year: 2021, Volume and Issue: 363(18), P. 4284 - 4308

Published: June 29, 2021

Abstract Functionalized oxindoles are privileged heterocyclic scaffolds and common core structural motifs that broadly present in numerous natural products serve as key intermediates the synthesis of biological products, agrochemicals, pharmaceuticals. Oxindoles exhibit a broad pharmacological physiological activities, diverse range applications medicinal chemistry biomedical research. Owing to these fascinating activities oxindoles, several methodologies have been developed for construction oxindoles. In past decade, visible light mediated attracted substantial attention emerged promising approach this review, described. magnified image

Language: Английский

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New role for photoexcited organic dye, Na2 eosin Y via the direct hydrogen atom transfer (HAT) process in photochemical visible-light-induced synthesis of spiroacenaphthylenes and 1H-pyrazolo[1,2-b]phthalazine-5,10-diones under air atmosphere

Dyes and Pigments, Journal Year: 2021, Volume and Issue: 194, P. 109628 - 109628

Published: July 9, 2021

Language: Английский

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Eosin: a versatile organic dye whose synthetic uses keep expanding

Organic & Biomolecular Chemistry, Journal Year: 2021, Volume and Issue: 19(15), P. 3303 - 3317

Published: Jan. 1, 2021

The organic dye eosin's uses are currently expanding at a significant rate. In this review, we highlight some recent contributions to the field with focus on breadth of reactions eosin can catalyse.

Language: Английский

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Visible-Light-Induced Radical Condensation Cyclization to Synthesize 3,4-Dihydropyrimidin-2-(1H)-ones/thiones Using Photoexcited Na₂ Eosin Y as a Direct Hydrogen Atom Transfer (HAT) Catalyst

ACS Omega, Journal Year: 2022, Volume and Issue: 7(10), P. 8429 - 8436

Published: March 3, 2022

The data suggests that Na

Language: Английский

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Catalyst-free mechanochemistry as a versatile tool in synthetic chemistry: a review

Green Chemistry, Journal Year: 2023, Volume and Issue: 25(16), P. 6120 - 6148

Published: Jan. 1, 2023

This article presents a review of the reports on catalyst-free mechanochemical organic transformations and ability to initiate reactions that are extremely difficult/impossible occur is notable advancement process.

Language: Английский

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Eosin Y mediated photo-catalytic C–H functionalization: C–C and C–S bond formation

Organic Chemistry Frontiers, Journal Year: 2022, Volume and Issue: 10(1), P. 237 - 266

Published: Nov. 23, 2022

C–C and C–S bonds are valuable in organic transformation for synthesizing various bioactive heterocycles.

Language: Английский

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Stereoselective synthesis of CF₃-containing spirocyclic-oxindoles using N-2,2,2-trifluoroethylisatin ketimines: an update

RSC Advances, Journal Year: 2023, Volume and Issue: 13(11), P. 7063 - 7075

Published: Jan. 1, 2023

Recent updates on the synthesis of CF 3 -containing spirocyclic-oxindoles by employing N -2,2,2-trifluoroethylisatin ketimines are described in this review article.

Language: Английский

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