Polymer-supported eosin Y as a reusable photocatalyst for visible light mediated organic transformations

2019 ◽  
Vol 43 (46) ◽  
pp. 17974-17979 ◽  
Author(s):  
Arunasalam Sridhar ◽  
Rajmohan Rangasamy ◽  
Mari Selvaraj
Keyword(s):  
Visible Light ◽  
Eosin Y ◽  
Organic Transformations ◽  
Rapid Synthesis ◽  
Visible Light Driven ◽  
Polymer Supported ◽  
Phenylboronic Acids

Rapid synthesis of highly stable polymer-supported eosin Y for visible light-driven photoxidation of thioethers to sulfoxides and phenylboronic acids to phenols.

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.

Visible-Light-Driven Organic Photochemical Reactions in the Absence of External Photocatalysts

Synthesis ◽  
2019 ◽  
Vol 51 (16) ◽  
pp. 3021-3054 ◽  
Author(s):  
Yi Wei ◽  
Quan-Quan Zhou ◽  
Fen Tan ◽  
Liang-Qiu Lu ◽  
Wen-Jing Xiao
Keyword(s):  
Visible Light ◽  
Transition Metal Complexes ◽  
Organic Dyes ◽  
Photochemical Reactions ◽  
Reaction Intermediates ◽  
Organic Transformations ◽  
Reaction Conditions ◽  
Inorganic Semiconductors ◽  
Visible Light Driven ◽  
Representative Work

Visible-light-driven organic photochemical reactions have attracted substantial attention from the synthetic community. Typically, catalytic quantities of photosensitizers, such as transition metal complexes, organic dyes, or inorganic semiconductors, are necessary to absorb visible light and trigger subsequent organic transformations. Recently, in contrast to these photocatalytic processes, a variety of photocatalyst-free organic photochemical transformations have been exploited for the efficient formation of carbon–carbon and carbon–heteroatom bonds. In addition to not requiring additional photocatalysts, they employ low-energy visible light irradiation, have mild reaction conditions, and enable broad substrate diversity and functional group tolerance. This review will focus on a summary of representative work in this field in terms of different photoexcitation modes.1 Introduction2 Visible Light Photoexcitation of a Single Substrate3 Visible Light Photoexcitation of Reaction Intermediates4 Visible Light Photoexcitation of EDA Complexes between Substrates5 Visible Light Photoexcitation of EDA Complexes between Substrates and Reaction Intermediates6 Visible Light Photoexcitation of Products7 Conclusion and Outlook

Click-based conjugated microporous polymers as efficient heterogeneous photocatalysts for organic transformations

2022 ◽  
Author(s):  
Shaolin Gan ◽  
Yan Zeng ◽  
Jiaxin Liu ◽  
Junqi Nie ◽  
Cuifen Lu ◽  
...  
Keyword(s):  
Visible Light ◽  
Porous Structure ◽  
Oxidative Coupling ◽  
Photoelectric Property ◽  
Synthetic Methods ◽  
Organic Transformations ◽  
Microporous Polymers ◽  
Visible Light Driven ◽  
Conjugated Microporous Polymers

Due to the tunable porous structure and photoelectric property, conjugated microporous polymers (CMPs) have provided a new platform for visible-light driven photocatalysis. Some synthetic methods like Sonogashira, Suzuki, oxidative coupling...

Visible light-catalytic dehydrogenation of benzylic alcohols to carbonyl compounds by using an eosin Y and nickel–thiolate complex dual catalyst system

2019 ◽  
Vol 21 (6) ◽  
pp. 1401-1405 ◽  
Author(s):  
Xiu-Jie Yang ◽  
Yi-Wen Zheng ◽  
Li-Qiang Zheng ◽  
Li-Zhu Wu ◽  
Chen-Ho Tung ◽  
...  
Keyword(s):  
Visible Light ◽  
Carbonyl Compounds ◽  
Catalyst System ◽  
Environmentally Benign ◽  
Eosin Y ◽  
Catalytic Dehydrogenation ◽  
Benzylic Alcohols ◽  
System P ◽  
Visible Light Driven

A simple and environmentally benign visible-light-driven dehydrogenation of benzylic alcohols with H2 as the only byproduct is achieved by using an eosin Y and nickel–thiolate complex dual catalyst system.

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