scholarly journals Recent Advances on Metal-Free, Visible-Light- Induced Catalysis for Assembling Nitrogen- and Oxygen-Based Heterocyclic Scaffolds

Molecules ◽  
2019 ◽  
Vol 24 (8) ◽  
pp. 1533 ◽  
Author(s):  
Robert Pawlowski ◽  
Filip Stanek ◽  
Maciej Stodulski
Keyword(s):  
Visible Light ◽  
Organic Synthesis ◽  
Organic Dyes ◽  
Important Class ◽  
Special Interests ◽  
Controllable Synthesis ◽  
Metal Free ◽  
Wide Range ◽  
Low Costs ◽  
Mediated Catalysis

Heterocycles are important class of structures, which occupy a major space in the domain of natural and bioactive compounds. For this reason, development of new synthetic strategies for their controllable synthesis became of special interests. The development of novel photoredox systems with wide-range application in organic synthesis is particularly interesting. Organic dyes have been widely applied as photoredox catalysts in organic synthesis. Their low costs compared to the typical photocatalysts based on transition metals make them an excellent alternative. This review describes proceedings since 2015 in the area of application of metal-free, visible-light-mediated catalysis for assembling various heterocyclic scaffolds containing five- and six-membered rings bearing nitrogen and oxygen heteroatoms.

Rhodamines as Photocatalyst in Organic Synthesis

2020 ◽  
Vol 07 ◽  
Author(s):  
Avik K. Bagdi ◽  
Papiya Sikdar
Keyword(s):  
Visible Light ◽  
Organic Synthesis ◽  
Organic Dyes ◽  
Transition Metal Catalysts ◽  
Visible Light Photocatalysis ◽  
Eosin Y ◽  
Organic Transformations ◽  
The Sustainable Development ◽  
Mechanistic Pathway ◽  
Green Model

Abstract:: Organic synthesis under environment friendly conditions has great impact in the sustainable development. In this context, visible light photocatalysis has emerged as a green model as this offers an energy-efficient pathway towards the organic transformation. Different transition-metal catalysts (Ir-, Ru-, Cu- etc) and organic dyes (eosin Y, rose bengal, methylene blue etc) are well-known photocatalysts in organic synthesis. Apart from the well-known organophotoredox catalysts, rhodamines (Rhodamine B and Rhodamine 6G) have been also employed as efficient photocatalysts for different organic transformations. In this review, we will focus on the photocatalysis by rhodamines in organic synthesis. Mechanistic pathway of the methodologies will also be discussed. We believe this review will stimulate the employment of rhodamines in the visible light photocatalysis for efficient organic transformations in the future.

Application of Oxime Organic Dyes in Visible-Light-Induced Organic Synthesis

2018 ◽  
Vol 38 (11) ◽  
pp. 2807 ◽  
Author(s):  
Wenxiu Xu ◽  
Xiaoqiang Dai ◽  
Hanjing Xu ◽  
Jianquan Weng
Keyword(s):  
Visible Light ◽  
Organic Synthesis ◽  
Organic Dyes

Impact of alkoxy chain length on carbazole-based, visible light-driven, dye sensitized photocatalytic hydrogen production

2015 ◽  
Vol 3 (43) ◽  
pp. 21713-21721 ◽  
Author(s):  
Motonori Watanabe ◽  
Hidehisa Hagiwara ◽  
Yudai Ogata ◽  
Aleksandar Staykov ◽  
Sean R. Bishop ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Chain Length ◽  
Organic Dyes ◽  
Photocatalytic Hydrogen Production ◽  
Metal Free ◽  
Dye Sensitized ◽  
Visible Light Driven

Alkoxyphenyl-substituted carbazole-based metal-free organic dyes were synthesized and effectively used for dye-sensitized, visible-light-driven, photocatalytic hydrogen production.

Excited radical anions and excited anions in visible light photoredox catalysis

2019 ◽  
Vol 4 (12) ◽  
Author(s):  
Indrajit Ghosh
Keyword(s):  
Visible Light ◽  
Organic Synthesis ◽  
Transition Metal Complexes ◽  
Organic Dyes ◽  
Visible Light Photocatalysis ◽  
Radical Anions ◽  
Photoredox Catalysis ◽  
Inorganic Semiconductors ◽  
Redox Active ◽  
Excited Radical

Abstract Over the last decade, visible light photocatalysis has dramatically increased the arsenal of methods for organic synthesis and changed the way we activate molecules for chemical reactions. Polypyridyl transition metal complexes, redox-active organic dyes, and inorganic semiconductors are typically used as photocatalysts for such transformations. This chapter reviews the applications of radical anions and anions as photosensitizers in visible light photoredox catalysis.

Metal-free activation of peroxymonosulfate by g-C3N4 under visible light irradiation for the degradation of organic dyes

RSC Advances ◽  
2015 ◽  
Vol 5 (55) ◽  
pp. 44128-44136 ◽  
Author(s):  
Yufang Tao ◽  
Qian Ni ◽  
Mingyu Wei ◽  
Dongsheng Xia ◽  
Xiaoxia Li ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Organic Dyes ◽  
Light Irradiation ◽  
Metal Free

g-C3N4 was demonstrated as a stable metal-free photocatalyst to activate peroxymonosulfate under visible light irradiation for the degradation of organic dyes.

Boranil-based conjugated microporous polymer for the efficient visible-light-driven heterogeneous photocatalysis

2021 ◽  
Author(s):  
Weitao Gong ◽  
Xiaorong Deng ◽  
Kaixun Dong ◽  
Lu Liu ◽  
Guiling Ning
Keyword(s):  
Visible Light ◽  
Organic Dyes ◽  
Heterogeneous Photocatalysis ◽  
Metal Free ◽  
Microporous Polymers ◽  
Conjugated Microporous Polymer ◽  
Microporous Polymer ◽  
Visible Light Driven ◽  
Conjugated Microporous Polymers

The incorporation of pure organic dyes into the backbone of conjugated microporous polymers (CMPs) opens a new avenue for facile constructing metal-free heterogeneous photocatalysts with tailor-made properties. Herein, we presented...

Visible-light induced enhancement in the multi-catalytic activity of sulfated carbon dots for aerobic carbon–carbon bond formation

2019 ◽  
Vol 21 (24) ◽  
pp. 6717-6726 ◽  
Author(s):  
Daisy Sarma ◽  
Biju Majumdar ◽  
Tridib K. Sarma
Keyword(s):  
Catalytic Activity ◽  
Visible Light ◽  
Organic Synthesis ◽  
Carbon Dots ◽  
Bond Formation ◽  
Significant Advance ◽  
Single System ◽  
Metal Free ◽  
Carbon Carbon Bond ◽  
Different Types

The development of carbonaceous materials as metal-free catalysts integrating different types of catalysis in a single system represents a significant advance in cascade/tandem organic synthesis.

Controllable synthesis of the defect-enriched MoO3-x nanosheets as an effective visible-light photocatalyst for the degradation of organic dyes

2021 ◽  
Author(s):  
Yuqi Zhang ◽  
Xiang Yu ◽  
Huan Liu ◽  
XInyi LIan ◽  
Bin Shang ◽  
...  
Keyword(s):  
Thermal Treatment ◽  
Transition Metal ◽  
Visible Light ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Organic Dyes ◽  
Controllable Synthesis ◽  
Visible Light Photocatalyst ◽  
Solvent Crystallization

Transition metal oxides (TMOs) are emerging as a promising class of photocatalysts for pollutants treatment. In this report, integrating the anti-solvent crystallization and thermal treatment, we develope a facile and...

Polyimides as metal-free catalysts for organic dye degradation in the presence peroxymonosulfate under visible light irradiation

RSC Advances ◽  
2015 ◽  
Vol 5 (119) ◽  
pp. 98231-98240 ◽  
Author(s):  
Yufang Tao ◽  
Mingyu Wei ◽  
Dongsheng Xia ◽  
Aihua Xu ◽  
Xiaoxia Li
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Organic Dyes ◽  
Dye Degradation ◽  
Organic Dye ◽  
Light Irradiation ◽  
Metal Free ◽  
Organic Dye Degradation

Polyimide was demonstrated as a stable metal-free photocatalyst to activate peroxymonosulfate with visible light for the degradation of organic dyes.

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