Cited by Progresses in the Preparation of Chromone Compounds and Their Applications in Organic Synthesis

Effect of the support alkyl chain nature in the functional properties of the immobilized lipases DOI

Diandra de Andrades, Pedro Abellanas-Pérez, Javier Rocha‐Martín

et al.

Enzyme and Microbial Technology, Journal Year: 2025, Volume and Issue: 184, P. 110583 - 110583

Published: Jan. 11, 2025

Language: Английский

Citations

Cascade in Situ Iodination, Chromone Annulation, and Cyanation for Site-Selective Synthesis of 2-Cyanochromones DOI

Yan Lin, Jie‐Ping Wan, Yunyun Liu

et al.

The Journal of Organic Chemistry, Journal Year: 2023, Volume and Issue: 88(6), P. 4017 - 4023

Published: March 2, 2023

A facile cascade reaction for the site selective synthesis of 2-cyanochromones is described. By using simple o-hydroxyphenyl enaminones and potassium ferrocyanide trihydrate (K4[Fe(CN)6]3·3H2O) as starting materials I2/AlCl3 promoters, products are furnished via tandem chromone ring formation C–H cyanation. The in situ 3-iodochromone a formal 1,2-hydrogen atom transfer (HAT) process account unconventional selectivity. In addition, 2-cyanoquinolin-4-one has been realized by employing corresponding 2-aminophenyl enaminone substrate.

Language: Английский

Citations

Synthesis of Chromone‐3‐phosphonates via Arbuzov‐Type C−P Cross Coupling from o‐Hydroxyphenyl Enaminones and Phosphites DOI

Dingsheng Cao,

Jie‐Ping Wan, Yunyun Liu

et al.

Advanced Synthesis & Catalysis, Journal Year: 2024, Volume and Issue: 366(17), P. 3670 - 3675

Published: July 2, 2024

Abstract With an in situ C−H iodination tactic, a method for the synthesis of chromone‐3‐phosphonates was developed with trialkyl/triaryl phosphites as reaction partners o ‐hydroxyphenyl enaminones by palladium catalysis. The product formation consists cascade iodination, chromone annulation, and Arbuzov‐type C−P cross coupling major transformations. In addition to providing enaminone‐based synthetic chromone‐3‐phosphonates, work shows advantage step economy skipping separate operation preparing iodo‐functionalized intermediate.

Language: Английский

Citations

Vitreoscillahemoglobin: a natural carbene transfer catalyst for diastereo- and enantioselective synthesis of nitrile-substituted cyclopropanes DOI

Hanqing Xie,

Fengxi Li, Yaning Xu

et al.

Green Chemistry, Journal Year: 2023, Volume and Issue: 25(17), P. 6853 - 6858

Published: Jan. 1, 2023

we developed an environmentally friendly strategy that combines in situ generation of a diazo reagent with biocatalysis for the asymmetric cyclopropanation olefins.

Language: Английский

Citations

Visible-Light-Induced Synthesis of 3-Alkyl Chromones under Catalyst- and Additive-Free Conditions DOI

Zhao Wei,

Zhiqin He,

Xiaohui Yang

et al.

The Journal of Organic Chemistry, Journal Year: 2023, Volume and Issue: 88(19), P. 13634 - 13644

Published: Sept. 8, 2023

Herein, we reported an efficient and facile visible-light-induced 3-alkyl chromone synthesis from easily accessible o-hydroxyaryl enaminones α-diazo esters. In this protocol, excellent yields were obtained with a broad substrate scope at room temperature, tolerating various functional groups. Of note is that eco-friendly methodology features catalyst- additive-free, mild reaction conditions, simple operation procedure, easy scale-up, which affords convenient pathway for the preparation of chromones. Experimental results density theory (DFT) computation analyses confirm participation carbene species active cyclopropane intermediate.

Language: Английский

Citations

A Green Synthesis of 3-Selanyl-Isoflavones via Lipase Mediated Selenylation/Cyclization of Enaminones DOI

Wenbo Kan,

Yuming Piao,

Wenning Song

et al.

Catalysts, Journal Year: 2024, Volume and Issue: 14(7), P. 413 - 413

Published: June 28, 2024

Herein, a green biocatalytic approach using lipase as catalyst has been developed for the synthesis of 3-selanyl-isoflavones through selenylation/cyclization 2-hydroxyphenyl enaminones and diphenyl di-selenide under mild conditions. The environmentally friendly method reached high yields 87–95% in short time at 30 °C, with 17 examples successfully prepared. Furthermore, we have investigated possible mechanisms underlying this reaction.

Language: Английский

Citations

Progresses in the Preparation of Chromone Compounds and Their Applications in Organic Synthesis DOI

Zhonghao Li,

Yu Zeng,

Yong Zeng

et al.

Chinese Journal of Organic Chemistry, Journal Year: 2024, Volume and Issue: 44(11), P. 3345 - 3345

Published: Jan. 1, 2024

Language: Английский

Citations