Visible-light-induced multicomponent cascade cycloaddition involving N-propargyl aromatic amines, diaryliodonium salts and sulfur dioxide: rapid access to 3-arylsulfonylquinolines

2018 ◽  
Vol 54 (11) ◽  
pp. 1335-1338 ◽  
Author(s):  
Deli Sun ◽  
Kun Yin ◽  
Ronghua Zhang

A visible-light-induced, Eosin Y catalyzed three-component synthesis of 3-arylsulfonylquinoline derivatives through N-propargyl aromatic amines, diaryliodonium salts and sulfur dioxide has been discovered.

2019 ◽  
Vol 55 (81) ◽  
pp. 12212-12215 ◽  
Author(s):  
Yu Liu ◽  
Qiao-Lin Wang ◽  
Zan Chen ◽  
Quan Zhou ◽  
Bi-Quan Xiong ◽  
...  

A novel visible-light promoted sulfonylation/ipso-cyclization of N-arylpropiolamides with aromatic amines and DABCO·(SO2)2 to synthesize various sulfonated spiro[4,5]trienones is reported.


2020 ◽  
Vol 07 ◽  
Author(s):  
Avik K. Bagdi ◽  
Papiya Sikdar

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.


2021 ◽  
Vol 19 (16) ◽  
pp. 3735-3742
Author(s):  
Se Hyun Kim ◽  
Ju Hyeon An ◽  
Jun Hee Lee

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.


Author(s):  
Ping Bao ◽  
Feiyan Yu ◽  
Fu-Sheng He ◽  
Zhimei Tang ◽  
Wei-Ping Deng ◽  
...  

A photoinduced sulfonylvinylation of unactivated C(sp3)-H bond through a three-component reaction of propargyl alcohols, potassium metabisulfite and cycloketone oxime esters is developed. This approach enables rapid access to cyanoalkylated vinyl...


2018 ◽  
Vol 16 (4) ◽  
pp. 536-540 ◽  
Author(s):  
Rajendra S. Rohokale ◽  
Shrikant D. Tambe ◽  
Umesh A. Kshirsagar

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.


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

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