Visible Light-Mediated [2 + 2] Cycloaddition Reactions of 1,4-Quinones and Terminal Alkynes

2019 ◽  
Vol 84 (14) ◽  
pp. 8948-8958 ◽  
Author(s):  
Shaista Sultan ◽  
Muneer-ul-Shafi Bhat ◽  
Masood Ahmad Rizvi ◽  
Bhahwal Ali Shah
Keyword(s):  
Visible Light ◽  
Cycloaddition Reactions ◽  
Terminal Alkynes

A New Cycloaddition Profile for ortho-Quinone Methides: Photoredox-Catalyzed [6+4] Cycloadditions for Synthesis of Benzo[b]cyclopenta[e]oxepines

2022 ◽  
Author(s):  
Kenta Tanaka ◽  
Yosuke Asada ◽  
Yujiro Hoshino
Keyword(s):  
Visible Light ◽  
Cycloaddition Reactions ◽  
Quinone Methides

Visible-light-induced [6+4] cycloaddition reactions of ortho-quinone methides have been developed. The reaction of ortho-quinone methides with pentafulvenes in the presence of a thioxanthylium photoredox catalyst afforded benzo[b]cyclopenta[e]oxepines. The present reaction...

Visible-Light-Promoted Three-Component Cycloaddition Reaction: Synthesis of 4-Functionalized 1,5-Disubstituted 1,2,3-Triazoles

2021 ◽  
Author(s):  
atul kumar ◽  
Navaneet Kumar ◽  
Deepak Bhadoria
Keyword(s):  
Visible Light ◽  
Cycloaddition Reaction ◽  
Reaction Synthesis ◽  
Terminal Alkynes ◽  
Sodium Salts ◽  
Three Component Reaction

A first visible-light promoted and photocatalyst-free three-component reaction protocol has been developed to synthesize 4-functionalized 1,5-disubstituted 1,2,3-triazoles from terminal alkynes, arylazides, and arylsulfinic acid sodium salts or arylsulfonyl hydrazides in...

Visible Light Mediated Cycloaddition Reactions

2018 ◽  
pp. 129-158
Author(s):  
Scott Morris ◽  
Theresa Nguyen ◽  
Nan Zheng
Keyword(s):  
Visible Light ◽  
Cycloaddition Reactions

Visible light-promoted copper catalyzed regioselective acetamidation of terminal alkynes by arylamines

2020 ◽  
Vol 22 (4) ◽  
pp. 1164-1170 ◽  
Author(s):  
V. Kishore Kumar Pampana ◽  
Arunachalam Sagadevan ◽  
Ayyakkannu Ragupathi ◽  
Kuo Chu Hwang
Keyword(s):  
Visible Light ◽  
Molecular Oxygen ◽  
Visible Light Irradiation ◽  
Room Temperature ◽  
Light Irradiation ◽  
Terminal Alkynes

Herein, we describe a copper photoredox catalyzed synthesis of acetamide via regioselective C–N coupling of arylamines with terminal alkynes using molecular oxygen (O2) as an oxidant at room temperature under visible light irradiation (47 examples).

Sign in / Sign up

Export Citation Format

Share Document