Visible-light-induced C–S bond formation of pyrazolin-5-ones with thioureas to pyrazol-4-yl carbamimidothioates DOI
Renhua Zheng, Haichang Guo, Xiu-Rong Hu

et al.

Molecular Catalysis, Journal Year: 2025, Volume and Issue: 580, P. 115086 - 115086

Published: April 8, 2025

Language: Английский

Switchable Multicomponent Cyclization Reactions to Access Fluoroalkylated Dihydropyrimidines and Pyrimidines under Solvent‐Free Conditions DOI

Wanqing Zuo,

Zhizhen Zhu, Yu Cheng

et al.

Chinese Journal of Chemistry, Journal Year: 2024, Volume and Issue: 42(12), P. 1394 - 1398

Published: Feb. 23, 2024

Comprehensive Summary The development of switchable solvent‐free multicomponent reactions to build high‐value‐added products is an important demand for organic synthesis. Herein, we detailed the successful implementation a strategy construction diverse 4‐fluoroalkyl‐1,4‐dihydropyrimidines and 4‐fluoroalkyl‐pyrimidines via solvent/additive‐free [3 + 2 1] annulation, starting from readily available enamines, trifluoroacetaldehyde hydrate or 1‐ethoxy‐2,2‐difluoroethanol amidines hydrochloride. This reaction conforms concept green synthesis, provides new avenue access valuable fluorinated heterocycles.

Language: Английский

Citations

6
Photocatalytic Benzylic C–H Oxidation/Cyclization of Enaminones to the Synthesis of Polysubstituted Oxazoles DOI
Mingrui Li,

Zhiqin He,

Wei Zhao

et al.

The Journal of Organic Chemistry, Journal Year: 2023, Volume and Issue: 88(13), P. 8257 - 8267

Published: June 1, 2023

Photocatalytic benzylic C–H oxidation/cyclization of enaminones was efficiently achieved to afford oxazole derivatives under mild conditions. The oxygen in the ring originated from green oxidant molecular oxygen. synthetic protocol features broad substrate scopes and good functional group tolerance. combined experimental theoretical studies reveal that suit is involved reaction transformations.

Language: Английский

Citations

12
One Stone, Three Birds: One-Pot Synthesis of Pyrido[3,2-a]phenoxazin-5-one Derivatives from o-Aminophenols with Triple Roles, Paraformaldehyde, and Enaminones via the Povarov Reaction DOI

Shuang‐Gui Lei,

You Zhou, Li‐Sheng Wang

et al.

The Journal of Organic Chemistry, Journal Year: 2023, Volume and Issue: 88(15), P. 11150 - 11160

Published: July 18, 2023

A novel multicomponent cascade cyclization reaction in one pot for the preparation of pyrido[3,2-a]phenoxazin-5-ones from simple o-aminophenols, paraformaldehyde, and enaminones has been established. It is noteworthy that o-aminophenol plays multiple roles serving as both a bis-nucleophile an iminoquinone precursor, which can situ generate aminophenoxazinones to undergo Povarov first time yield with high efficiency. Moreover, photoluminescence polarity sensitivity features aggregation-induced emission (AIE) characteristics, promising bioimaging theranostic applications.

Language: Английский

Citations

11
Construction of Fe3O4@SiO2-ABA-Amide/BTH-Cu(II) nanocomposite as a reusable magnetic catalyst for reduction of nitroarenes and nitriles to amines DOI
Mostafa R. Abukhadra, Ahmed M. El‐Sherbeeny, Mehdi Tlija

et al.

Transition Metal Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Language: Английский

Citations

0
Visible-light-induced C–S bond formation of pyrazolin-5-ones with thioureas to pyrazol-4-yl carbamimidothioates DOI
Renhua Zheng, Haichang Guo, Xiu-Rong Hu

et al.

Molecular Catalysis, Journal Year: 2025, Volume and Issue: 580, P. 115086 - 115086

Published: April 8, 2025

Language: Английский

Citations

0