Synthesis of (E)-Quinoxalinone Oximes through a Multicomponent Reaction under Mild Conditions DOI
Jun Xu,

Huiyong Yang,

Lei He

et al.

Organic Letters, Journal Year: 2020, Volume and Issue: 23(1), P. 195 - 201

Published: Dec. 23, 2020

Herein, a novel method for the gram-scale synthesis of (E)-quinoxalinone oximes through multicomponent reaction under mild conditions is described. Such transformation was performed transition-metal-free conditions, affording (E)-oximes in moderate-to-good yield recrystallization. Our methodology demonstrates successful combination Mannich-type and radical coupling, providing green practical approach potentially bioactive quinoxalinone-containing molecules.

Language: Английский

Photoredox-Catalyzed C–H Functionalization Reactions DOI

Natalie Holmberg‐Douglas,

David A. Nicewicz

Chemical Reviews, Journal Year: 2021, Volume and Issue: 122(2), P. 1925 - 2016

Published: Sept. 29, 2021

The fields of C–H functionalization and photoredox catalysis have garnered enormous interest utility in the past several decades. Many different scientific disciplines relied on strategies including natural product synthesis, drug discovery, radiolabeling, bioconjugation, materials, fine chemical synthesis. In this Review, we highlight use reactions. We separate review into inorganic/organometallic catalysts organic-based catalytic systems. Further subdivision by reaction class─either sp2 or sp3 functionalization─lends perspective tactical for these methods synthetic applications.

Language: Английский

Citations

635

Visible-light-induced three-component reaction of quinoxalin-2(1H)-ones, alkenes and CF3SO2Na leading to 3-trifluoroalkylated quinoxalin-2(1H)-ones DOI
Na Meng,

Yufen Lv,

Qishun Liu

et al.

Chinese Chemical Letters, Journal Year: 2020, Volume and Issue: 32(1), P. 258 - 262

Published: Nov. 20, 2020

Language: Английский

Citations

142

Visible-light-initiated 4CzIPN catalyzed multi-component tandem reactions to assemble sulfonated quinoxalin-2(1H)-ones DOI
Zhiwei Wang, Qishun Liu,

Ruisheng Liu

et al.

Chinese Chemical Letters, Journal Year: 2021, Volume and Issue: 33(3), P. 1479 - 1482

Published: Aug. 12, 2021

Language: Английский

Citations

132

Acyl Radicals from α-Keto Acids: Metal-Free Visible-Light-Promoted Acylation of Heterocycles DOI
Hu-Lin Zhu,

Fan‐Lin Zeng,

Xiaolan Chen

et al.

Organic Letters, Journal Year: 2021, Volume and Issue: 23(8), P. 2976 - 2980

Published: March 29, 2021

A general and metal-free visible-light-induced decarboxylative arylation procedure at room temperature was described for the construction of acylated heterocyclic derivatives, such as benzimidazo/indolo[2,1-a]isoquinolin-6(5H)-ones, aroylazaspiro[4.5]trienones, thioflavones, so on. This practical conducted by using 2,4,5,6-tetra(9H-carbazol-9-yl)isophthalonitrile (4CzIPN) a photocatalyst under mild conditions, which avoided use an additional base, traditional heating, metal reagents.

Language: Английский

Citations

123

Visible-light-induced four-component difunctionalization of alkenes to construct phosphorodithioate-containing quinoxalin-2(1H)-ones DOI
Xiao‐Ming Chen,

Lianhui Song,

Jun Pan

et al.

Chinese Chemical Letters, Journal Year: 2024, Volume and Issue: 35(11), P. 110112 - 110112

Published: June 25, 2024

Language: Английский

Citations

27

Aryl acyl peroxides for visible-light induced decarboxylative arylation of quinoxalin-2(1H)-ones under additive-, metal catalyst-, and external photosensitizer-free and ambient conditions DOI
Long‐Yong Xie, Sha Peng, Lihua Yang

et al.

Green Chemistry, Journal Year: 2020, Volume and Issue: 23(1), P. 374 - 378

Published: Oct. 23, 2020

Aryl radicals were generated for the first time from aryl acyl peroxides in ethyl acetate under ambient conditions and visible-light illumination absence of any additive, metal catalyst, or external photosensitizer.

Language: Английский

Citations

121

Visible-light-initiated malic acid-promoted cascade coupling/cyclization of aromatic amines and KSCN to 2-aminobenzothiazoles without photocatalyst DOI

Wei-Bao He,

Lan-Qing Gao,

Xinjie Chen

et al.

Chinese Chemical Letters, Journal Year: 2020, Volume and Issue: 31(7), P. 1895 - 1898

Published: Feb. 8, 2020

Language: Английский

Citations

106

Synergistic cooperative effect of CF3SO2Na and bis(2-butoxyethyl)ether towards selective oxygenation of sulfides with molecular oxygen under visible-light irradiation DOI

Kai-Jian Liu,

Zheng Wang,

Linghui Lu

et al.

Green Chemistry, Journal Year: 2020, Volume and Issue: 23(1), P. 496 - 500

Published: Nov. 26, 2020

A practical method for the switchable synthesis of sulfoxides and sulfones through visible-light-initiated CF3SO2Na/2-butoxyethyl ether synergistic catalyzed oxygenation sulfides was developed.

Language: Английский

Citations

100

Sustainable electrochemical cross-dehydrogenative coupling of 4-quinolones and diorganyl diselenides DOI
Jinyang Chen, Hongyu Wu, Qingwen Gui

et al.

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2021, Volume and Issue: 42(9), P. 1445 - 1450

Published: May 6, 2021

Language: Английский

Citations

92

Photocatalyst-, metal- and additive-free, direct C–H arylation of quinoxalin-2(1H)-ones with aryl acyl peroxides induced by visible light DOI
Jun Xu,

Hongdou Zhang,

Jianming Zhao

et al.

Organic Chemistry Frontiers, Journal Year: 2020, Volume and Issue: 7(24), P. 4031 - 4042

Published: Jan. 1, 2020

A visible light-mediated direct C–H arylation of quinoxalin-2(1H)-ones with aryl acyl peroxides has been developed.

Language: Английский

Citations

91