Visible-Light-Initiated Na2-Eosin Y Catalyzed Highly Regio- and Stereoselective Difunctionalization of Alkynes with Alkyl Bromides

2016 ◽  
Vol 81 (16) ◽  
pp. 7080-7087 ◽  
Author(s):  
Kuai Wang ◽  
Ling-Guo Meng ◽  
Lei Wang
Keyword(s):  
Visible Light ◽  
Eosin Y ◽  
Alkyl Bromides

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.

Highly chemoselective deoxygenation of N-heterocyclic N-oxides under transition metal-free conditions

2021 ◽  
Vol 19 (16) ◽  
pp. 3735-3742
Author(s):  
Se Hyun Kim ◽  
Ju Hyeon An ◽  
Jun Hee Lee
Keyword(s):  
Transition Metal ◽  
Visible Light ◽  
Eosin Y ◽  
Metal Free ◽  
Simple Protocol

Here, we provide an operationally simple protocol for the highly chemoselective deoxygenation of various functionalized N-heterocyclic N-oxides under visible light-mediated photoredox conditions with Na2-eosin Y as an organophotocatalyst.

Eosin Y photoredox catalyzed net redox neutral reaction for regiospecific annulation to 3-sulfonylindoles via anion oxidation of sodium sulfinate salts

2018 ◽  
Vol 16 (4) ◽  
pp. 536-540 ◽  
Author(s):  
Rajendra S. Rohokale ◽  
Shrikant D. Tambe ◽  
Umesh A. Kshirsagar
Keyword(s):  
Visible Light ◽  
Eosin Y ◽  
Cascade Cyclization ◽  
Neutral Reaction ◽  
Neutral Process ◽  
Radical Cascade

An eosin Y photoredox catalyzed net redox neutral process for 3-sulfonylindoles via the anionic oxidation of sodium sulfinate salts and its radical cascade cyclization with 2-alkynyl-azidoarenes was developed with visible light as a mediator.

Visible-light-mediated eosin Y catalyzed aerobic desulfurization of thioamides into amides

2013 ◽  
Vol 37 (12) ◽  
pp. 4119 ◽  
Author(s):  
Arvind K. Yadav ◽  
Vishnu P. Srivastava ◽  
Lal Dhar S. Yadav
Keyword(s):  
Visible Light ◽  
Eosin Y

Eosin Y–Yb(OTf)3 catalyzed visible light mediated electrocyclization/indole ring opening towards the synthesis of heterobiaryl-pyrazolo[3,4-b]pyridines

2018 ◽  
Vol 42 (9) ◽  
pp. 6617-6620 ◽  
Author(s):  
Shikha Singh ◽  
Parul Chauhan ◽  
Makthala Ravi ◽  
Prem P. Yadav
Keyword(s):  
Visible Light ◽  
Lewis Acid ◽  
Ring Opening ◽  
Room Temperature ◽  
Eosin Y ◽  
Indole Ring ◽  
Photo Catalysis

Synthesis of heterobiaryl-pyrazolo[3,4-b]pyridines via Lewis acid and visible light photo-catalysis at room temperature.

Visible-Light-Induced Photoacid Catalysis: Application in Glycosylation with O-Glycosyl Trichloroacetimidates

2021 ◽  
Author(s):  
Gaoyuan Zhao ◽  
Juncheng Li ◽  
Ting Wang
Keyword(s):  
Visible Light ◽  
Light Irradiation ◽  
Eosin Y ◽  
Glycosyl Donors

The development of visible-light-induced photoacid catalyzed glycosylation is reported. The eosin Y and PhSSPh catalysts system are applied to realize the glycosylation with different glycosyl donors upon light irradiation. The...

Visible-Light-Driven C4-Selective Alkylation of Pyridinium Derivatives with Alkyl Bromides

2020 ◽  
Vol 142 (26) ◽  
pp. 11370-11375 ◽  
Author(s):  
Sungwoo Jung ◽  
Sanghoon Shin ◽  
Seongjin Park ◽  
Sungwoo Hong
Keyword(s):  
Visible Light ◽  
Alkyl Bromides ◽  
Visible Light Driven ◽  
Selective Alkylation
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