Synthesis of Pyrano[2,3- d ]pyrimidines Using tris(Hydroxymethyl)aminomethane as a Biodegradable and Reusable Organobase Catalyst

Organic Preparations and Procedures International, Journal Year: 2023, Volume and Issue: 56(1), P. 78 - 82

Published: June 9, 2023

Click to increase image sizeClick decrease size AcknowledgmentsWe gratefully acknowledge financial support from the Research Council of Apadana Institute Higher Education.

Language: Английский

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The development of knoevenagel-michael cyclocondensation through a single-electron transfer (SET)/energy transfer (EnT) pathway in the use of methylene blue (MB+) as a photo-redox catalyst

Journal of Photochemistry and Photobiology A Chemistry, Journal Year: 2022, Volume and Issue: 432, P. 114120 - 114120

Published: June 30, 2022

Language: Английский

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A Facile Access to Metal-Free Synthesis of 3,4-Dihydropyrimidin-2-(1H)-Ones/Thiones using Acridine Yellow G as a Photo-Induced Electron Transfer Photocatalyst

Polycyclic aromatic compounds, Journal Year: 2023, Volume and Issue: 44(1), P. 495 - 506

Published: Feb. 10, 2023

AbstractA green approach for the metal-free synthesis of 3,4-dihydropyrimidin-2-(1H)-ones/thiones was developed using a radical tandem three-condensation domino Biginelli reaction β-ketoesters, arylaldehydes, and urea/thiourea. Using acridine yellow G (AYG) as photo-induced electron transfer (PET) photocatalyst visible light sustainable energy source. The goal this study is to increase use nonmetal dye that inexpensive readily available. High yields, efficiency, environmental friendliness are all advantages photochemically catalyzed AYG, significant atom economy, time-saving features, ease usage. As result, variety chemical variables can be monitored throughout time. turnover number (TON) frequency (TOF) have been computed. Surprisingly, gram-scale cyclization conceivable, implying technique could applied in industry.Keywords: Acridine (AYG)photo-induced (PET)photochemical synthesisrenewable source3,4-dihydropyrimidin-2-(1H)-ones/thiones Disclosure statementNo potential conflict interest reported by author(s).Additional informationFundingWe gratefully acknowledge financial support from Research Council Apadana Institute Higher Education.

Language: Английский

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Polyethylene glycol (PEG-400) as a recyclable and biodegradable reaction medium for green synthesis of 2-amino-4H-chromenes

Current Research in Green and Sustainable Chemistry, Journal Year: 2023, Volume and Issue: 7, P. 100376 - 100376

Published: Jan. 1, 2023

A helpful manufactured course to the one-pot green synthesis of 2-amino-4H-chromenes through a tandem Knoevenagel-Michael cyclocondensation reaction aldehydes, malononitrile, and resorcinol in polyethylene glycol (PEG-400) as accessible biodegradable media have been detailed. All responses are completed brief time items gotten fabulous yields. The striking highlights this eco-friendly approach media, yields, simple work-up without requires for column chromatographic separation, no poisonous organic solvents, evasion harmful reagents, strategy, effortlessness operation. Additionally, PEG-400 is exceedingly steady can be reused four sequential runs major basic changes or misfortune movement, which has exceptionally advantageous tending natural concerns.

Language: Английский

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Acridine Yellow G: A Photo-induced Electron Transfer Photocatalyst for the Radical Synthesis of Pyrano[2,3- d ]pyrimidines in an Aqueous Medium

Organic Preparations and Procedures International, Journal Year: 2024, Volume and Issue: 56(5), P. 419 - 428

Published: Feb. 7, 2024

Language: Английский

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