scholarly journals α-Alkylation of ketimines using visible light photoredox catalysis

RSC Advances ◽  
2017 ◽  
Vol 7 (69) ◽  
pp. 43655-43659 ◽  
Author(s):  
Allegra Franchino ◽  
Antonia Rinaldi ◽  
Darren J. Dixon
Keyword(s):  
Visible Light ◽  
Photoredox Catalysis ◽  
Mild Conditions

A novel α-alkylation of N-diphenylphosphinoyl ketimines with α-bromocarbonyl compounds has been accomplished under mild conditions using nickel and ruthenium light-promoted catalysis.

Enantioselective Radical Functionalization of Imines and Iminium Intermediates via Visible Light Photoredox Catalysis

Synthesis ◽  
2020 ◽  
Author(s):  
Jia-Jia Zhao ◽  
Hong-Hao Zhang ◽  
Shouyun Yu
Keyword(s):  
Visible Light ◽  
Asymmetric Synthesis ◽  
Carbonyl Compounds ◽  
Asymmetric Reduction ◽  
Chemical Transformations ◽  
Photoredox Catalysis ◽  
Radical Coupling ◽  
Mild Conditions ◽  
Iminium Ions ◽  
Radical Functionalization

Visible light photoredox catalysis has recently emerged as a powerful tool for the development of new and valuable chemical transformations under mild conditions. Visible-light promoted enantioselective radical transformations of imines and iminium intermediates provide new opportunities for the asymmetric synthesis of amines and asymmetric β-functionalization of unsaturated carbonyl compounds. In this review, the advance in the catalytic asymmetric radical functionalization of imines, as well as iminium intermediates, are summarized. 1 Introduction 2 The enantioselective radical functionalization of imines 2.1 Asymmetric reduction 2.2 Asymmetric cyclization 2.3 Asymmetric addition 2.4 Asymmetric radical coupling 3 The enantioselective radical functionalization of iminium ions 3.1 Asymmetric radical alkylation 3.2 Asymmetric radical acylation 4 Conclusion

Three-component difluoroalkylation–thiolation of alkenes by iron-facilitated visible-light photoredox catalysis

2019 ◽  
Vol 55 (30) ◽  
pp. 4383-4386 ◽  
Author(s):  
Rui Xu ◽  
Chun Cai
Keyword(s):  
Visible Light ◽  
Photoredox Catalysis ◽  
Mild Conditions

The first difluoroalkylation–thiolation of alkenes catalyzed by iron-facilitated photoredox has been developed with a broad substrate scope under mild conditions.

Metal-free oxidative phosphinylation of aryl alkynes to β-ketophosphine oxides via visible-light photoredox catalysis

2016 ◽  
Vol 6 (2) ◽  
pp. 413-416 ◽  
Author(s):  
Mei-jie Bu ◽  
Guo-ping Lu ◽  
Chun Cai
Keyword(s):  
Visible Light ◽  
Organic Dye ◽  
Photoredox Catalysis ◽  
Metal Free ◽  
Mild Conditions ◽  
Aryl Alkynes

A visible-light-induced oxidative phosphinylation of arylacetylenes catalyzed by an inexpensive organic dye was demonstrated to be effective under mild conditions.

scholarly journals Recent Advances in Visible-Light-Mediated Amide Synthesis

Molecules ◽  
2022 ◽  
Vol 27 (2) ◽  
pp. 517
Author(s):  
Bin Lu ◽  
Wen-Jing Xiao ◽  
Jia-Rong Chen
Keyword(s):  
Visible Light ◽  
Organic Molecules ◽  
Structural Motif ◽  
Radical Reactions ◽  
Photoredox Catalysis ◽  
Mild Conditions ◽  
Amide Synthesis ◽  
Functionalized Materials ◽  
Activating Agent ◽  
Ubiquitous Presence

Visible-light photoredox catalysis has attracted tremendous interest within the synthetic community. As such, the activation mode potentially provides a more sustainable and efficient platform for the activation of organic molecules, enabling the invention of many controlled radical-involved reactions under mild conditions. In this context, amide synthesis via the strategy of photoredox catalysis has received growing interest due to the ubiquitous presence of this structural motif in numerous natural products, pharmaceuticals and functionalized materials. Employing this strategy, a wide variety of amides can be prepared effectively from halides, arenes and even alkanes under irradiation of visible light. These methods provide a robust alternative to well-established strategies for amide synthesis that involve condensation between a carboxylic acid and amine mediated by a stoichiometric activating agent. In this review, the representative progresses made on the synthesis of amides through visible light-mediated radical reactions are summarized.

Regioselective C3-H Trifluoromethylation of 2H-Indazole Under Transition-Metal-Free Photoredox Catalysis

2019 ◽  
Author(s):  
Arumugavel Murugan ◽  
Venkata Nagarjuna Babu ◽  
Nagaraj Sabarinathan ◽  
Sharada Duddu. S
Keyword(s):  
Transition Metal ◽  
Visible Light ◽  
Practical Approach ◽  
Hypervalent Iodine ◽  
Radical Mechanism ◽  
Photoredox Catalysis ◽  
Metal Free

Here we report a visible-light-promoted metal-free regioselective C3-H trifluoromehtylation reaction that proceeds via radical mechanism and which supported by control experiments. The combination of photoredox catalysis and hypervalent iodine reagent provides a practical approach for the present trifluoromethylation reaction and synthesis of a library of trifluoromethylated indazoles.

Visible-Light-Mediated Tandem Sulfonylation/Cyclization of Vinyl Azides with Sulfonyl Hydrazines for the Synthesis of 6-(Sulfonylmethyl)phenanthridines under Mild Conditions

Synlett ◽  
2019 ◽  
Vol 30 (08) ◽  
pp. 955-960 ◽  
Author(s):  
Liu-Liang Mao ◽  
Li-Xia Quan ◽  
Xian-Hong Zhu ◽  
Cong-Bin Ji ◽  
An-Xi Zhou ◽  
...  
Keyword(s):  
Visible Light ◽  
Mild Conditions ◽  
Simple Strategy ◽  
Vinyl Azides

A visible-light-mediated tandem sulfonylation/cyclization of vinyl azides with sulfonyl hydrazines was developed that provides an efficient and simple strategy for the synthesis of valuable 6-(sulfonylmethyl)phenanthridines with a broad substrate scope and satisfactory yields under mild conditions.

Intermolecular Aminotrifluoromethylation of Alkenes by Visible-Light-Driven Photoredox Catalysis

2013 ◽  
Vol 15 (9) ◽  
pp. 2136-2139 ◽  
Author(s):  
Yusuke Yasu ◽  
Takashi Koike ◽  
Munetaka Akita
Keyword(s):  
Visible Light ◽  
Photoredox Catalysis ◽  
Visible Light Driven
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