Visible-Light-Mediated Ru-Catalyzed Synthesis of 3-(Arylsulfonyl)but-3-enals via Coupling of α-Allenols with Diazonium Salts and Sulfur Dioxide

2020 ◽  
Vol 22 (24) ◽  
pp. 9490-9494
Author(s):  
Fernando Herrera ◽  
Amparo Luna ◽  
Pedro Almendros
Keyword(s):  
Sulfur Dioxide ◽  
Visible Light ◽  
Diazonium Salts

New Avenues in Radical Trifluoromethylselenylation with ­Trifluoromethyl Tolueneselenosulfonate

Synlett ◽  
2018 ◽  
Vol 30 (07) ◽  
pp. 777-782 ◽  
Author(s):  
Clément Ghiazza ◽  
Cyrille Monnereau ◽  
Lhoussain Khrouz ◽  
Maurice Médebielle ◽  
Thierry Billard ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Transition Metal ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Room Temperature ◽  
Diazonium Salts ◽  
Metal Free ◽  
Luminescence Measurement ◽  
Stable Reagent ◽  
Shelf Stable

We demonstrated that the shelf-stable reagent trifluoromethyl tolueneselenosulfonate can be involved in radical trifluoromethylselenylation. Upon visible-light irradiation, the homolysis of the reagent could take place at room temperature. This finding is explored for unprecedented C(sp2)–SeCF3 and C(sp3)–SeCF3 processes under transition-metal-free conditions. Mechanistic investigations, including cyclic voltammetry, luminescence measurement, and EPR studies, allowed the proposal of plausible mechanisms.1 Introduction.2 Reactivity of Reagent I with Diazonium Salts3 Reactivity of Reagent I with Alkenes and Alkynes4 Conclusion

Black phosphorus as a metal-free, visible-light-active heterogeneous photoredox catalyst for the direct C–H arylation of heteroarenes

2020 ◽  
Vol 56 (44) ◽  
pp. 5901-5904 ◽  
Author(s):  
Erbay Kalay ◽  
Hüseyin Küçükkeçeci ◽  
Haydar Kilic ◽  
Önder Metin
Keyword(s):  
Visible Light ◽  
Black Phosphorus ◽  
Diazonium Salts ◽  
Metal Free ◽  
Visible Light Active ◽  
First Time

We report for the first time the employment of black phosphorus (BP) as a metal free, visible-light-active and reusable heterogeneous photoredox catalyst for the direct C–H arylation of heteroarenes (furan and thiophene) with aryl diazonium salts.

A metal-free route to alkynyl sulfones under photoinduced conditions with the insertion of sulfur dioxide

2020 ◽  
Vol 22 (6) ◽  
pp. 1906-1910 ◽  
Author(s):  
Xinxing Gong ◽  
Min Yang ◽  
Jin-Biao Liu ◽  
Fu-Sheng He ◽  
Xiaona Fan ◽  
...  
Keyword(s):  
Sulfur Dioxide ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Room Temperature ◽  
Light Irradiation ◽  
Metal Free

A metal-free route to alkynyl sulfones under photoinduced conditions is accomplished, starting from 4-alkyl Hantzsch esters, sulfur dioxide, and alkynyl bromides under visible light irradiation at room temperature.

A photoinduced reaction of perfluoroalkyl halides with 1,3-diarylprop-2-yn-1-ones catalyzed by DABSO

2017 ◽  
Vol 4 (9) ◽  
pp. 1745-1750 ◽  
Author(s):  
Yuewen Li ◽  
Yiye Lu ◽  
Runyu Mao ◽  
Zhiming Li ◽  
Jie Wu
Keyword(s):  
Sulfur Dioxide ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Halogen Bond ◽  
Theoretical Calculations ◽  
Light Irradiation ◽  
Efficient Catalyst ◽  
Photoinduced Reaction ◽  
Plausible Mechanism ◽  
Perfluoroalkyl Halides

The sulfur dioxide surrogate of DABCO·(SO2)2 is used as an efficient catalyst for the cleavage of the perfluoroalkyl-halogen bond under visible-light irradiation. A plausible mechanism supported by theoretical calculations is proposed.

ChemInform Abstract: Synthetic Applications of Aryl Diazonium Salts Enabled by Visible Light Photoredox Catalysis

ChemInform ◽  
2014 ◽  
Vol 45 (44) ◽  
pp. no-no
Author(s):  
Durga Prasad Hari ◽  
Thea Hering ◽  
Burkhard Koenig
Keyword(s):  
Visible Light ◽  
Diazonium Salts ◽  
Photoredox Catalysis

ChemInform Abstract: Synthesis of 3,3-Disubstituted Oxindoles by Visible-Light-Mediated Radical Reactions of Aryl Diazonium Salts with N-Arylacrylamides.

ChemInform ◽  
2014 ◽  
Vol 45 (19) ◽  
pp. no-no
Author(s):  
Weijun Fu ◽  
Fengjuan Xu ◽  
Yuqin Fu ◽  
Mei Zhu ◽  
Jiaqi Yu ◽  
...  
Keyword(s):  
Visible Light ◽  
Radical Reactions ◽  
Diazonium Salts
Sign in / Sign up

Export Citation Format

Share Document