Metal-free desilylative C–C bond formation by visible-light photoredox catalysis

2019 ◽  
Vol 55 (20) ◽  
pp. 2980-2983 ◽  
Author(s):  
Mustafa Uygur ◽  
Tobias Danelzik ◽  
Olga García Mancheño
Keyword(s):  
Visible Light ◽  
Bond Formation ◽  
Photoredox Catalysis ◽  
Metal Free

A novel metal-free desilylative C–C bond formation from simple organosilanes by visible-light acridinium photoredox catalysis is presented.

Regioselective C3-H Trifluoromethylation of 2H-Indazole Under Transition-Metal-Free Photoredox Catalysis

2019 ◽  
Author(s):  
Arumugavel Murugan ◽  
Venkata Nagarjuna Babu ◽  
Nagaraj Sabarinathan ◽  
Sharada Duddu. S
Keyword(s):  
Transition Metal ◽  
Visible Light ◽  
Practical Approach ◽  
Hypervalent Iodine ◽  
Radical Mechanism ◽  
Photoredox Catalysis ◽  
Metal Free

Here we report a visible-light-promoted metal-free regioselective C3-H trifluoromehtylation reaction that proceeds via radical mechanism and which supported by control experiments. The combination of photoredox catalysis and hypervalent iodine reagent provides a practical approach for the present trifluoromethylation reaction and synthesis of a library of trifluoromethylated indazoles.

Phthalide synthesis through dehydrogenated lactonization of the C(sp3)–H bond by photoredox catalysis

2021 ◽  
Author(s):  
Hui Liu ◽  
Chao Liu ◽  
Shanyi Chen ◽  
Qihong Lai ◽  
Yulin Lin ◽  
...  
Keyword(s):  
Visible Light ◽  
Efficient Method ◽  
Room Temperature ◽  
Photoredox Catalysis ◽  
Metal Free

An efficient method for the direct oxidative lactonization of the C(sp3)–H bonds of benzyl via visible-light-induced photoredox catalysis. The metal-free protocol delivers diverse phthalides using O2 as the sole terminal oxidant at room temperature.

scholarly journals Metal-free visible light photoredox enables generation of carbyne equivalents via phosphonium ylide C–H activation

2019 ◽  
Vol 10 (6) ◽  
pp. 1687-1691 ◽  
Author(s):  
Mrinmoy Das ◽  
Minh Duy Vu ◽  
Qi Zhang ◽  
Xue-Wei Liu
Keyword(s):  
Visible Light ◽  
Bond Formation ◽  
Formation Processes ◽  
New Approach ◽  
Carbon Bond ◽  
Metal Free ◽  
Carbon Carbon Bond ◽  
Carbon Carbon Bonds ◽  
Carbon Bonds ◽  
New Strategy

Phosphonium ylides have shown their synthetic usefulness in important carbon–carbon bond formation processes. Our new strategy employs phosphonium ylides as novel carbyne equivalents and features a new approach for constructing carbon–carbon bonds from alkenes.

scholarly journals Trifluoromethylation of Disubstituted Morpholines by Metal-Free Visible Light Photoredox Catalysis

2016 ◽  
Vol 28 (10) ◽  
pp. 2159-2163 ◽  
Author(s):  
Vishal Srivastava ◽  
Pravin K. Singh ◽  
Praveen P. Singh
Keyword(s):  
Visible Light ◽  
Photoredox Catalysis ◽  
Metal Free

Visible light photocatalysis in synthesis of pharmaceutically relevant heterocyclic scaffolds

2022 ◽  
Author(s):  
Vishal Srivastava ◽  
Pravin Kumar Singh ◽  
Shraddha Tivari ◽  
Praveen Pratap Singh
Keyword(s):  
Natural Products ◽  
Visible Light ◽  
Chemical Bond ◽  
Organic Synthesis ◽  
Bond Formation ◽  
Visible Light Photocatalysis ◽  
Photoredox Catalysis ◽  
Chemical Bond Formation

Visible light and photoredox catalysis have emerged as a powerful and long-lasting tool for organic synthesis, demonstrating the importance of a variety of chemical bond formation methods. Natural products, physiologically...

Metal-free photocatalytic trifluoromethylative pyridylation of unactivated alkenes

2018 ◽  
Vol 20 (22) ◽  
pp. 5209-5214 ◽  
Author(s):  
Yu-Tao He ◽  
Dahye Kang ◽  
Inwon Kim ◽  
Sungwoo Hong
Keyword(s):  
Transition Metal ◽  
Visible Light ◽  
Photoredox Catalysis ◽  
Metal Free

An efficient, transition metal-free trifluoromethylative pyridylation of unactivated alkenes was achieved by visible-light-induced photoredox catalysis.

Photoinduced Oxidative Cross-Coupling for O–S Bond Formation: A Facile Synthesis of Alkyl Benzenesulfonates

Synlett ◽  
2017 ◽  
Vol 28 (13) ◽  
pp. 1558-1563 ◽  
Author(s):  
Aiwen Lei ◽  
Atul Singh ◽  
Hong Yi ◽  
Guoting Zhang ◽  
Changliang Bian ◽  
...  
Keyword(s):  
Visible Light ◽  
Bond Formation ◽  
Cross Coupling ◽  
Selective Synthesis ◽  
Mechanistic Studies ◽  
Facile Synthesis ◽  
Metal Free

We have developed a photoinduced oxidative cross-coupling of thiophenols with alcohols for O–S bond formation. The protocol uses visible light, a metal-free photocatalyst, and oxygen as the oxidant for the selective synthesis of alkyl benzenesulfonates; no ligand co-additive is necessary. Mechanistic studies suggested that the disulfide and alkyl benzenesulfinate are involved as intermediates and that the transformation proceeds by a radical pathway.

ChemInform Abstract: Room Temperature C-P Bond Formation Enabled by Merging Nickel Catalysis and Visible-Light-Induced Photoredox Catalysis.

ChemInform ◽  
2015 ◽  
Vol 46 (32) ◽  
pp. no-no
Author(s):  
Jun Xuan ◽  
Ting-Ting Zeng ◽  
Jia-Rong Chen ◽  
Liang-Qiu Lu ◽  
Wen-Jing Xiao
Keyword(s):  
Visible Light ◽  
Room Temperature ◽  
Bond Formation ◽  
Nickel Catalysis ◽  
Photoredox Catalysis

Continuous Flow α-Trifluoromethylation of Ketones by Metal-Free Visible Light Photoredox Catalysis

2014 ◽  
Vol 16 (3) ◽  
pp. 896-899 ◽  
Author(s):  
David Cantillo ◽  
Oscar de Frutos ◽  
Juan A. Rincón ◽  
Carlos Mateos ◽  
C. Oliver Kappe
Keyword(s):  
Visible Light ◽  
Continuous Flow ◽  
Photoredox Catalysis ◽  
Metal Free
Sign in / Sign up

Export Citation Format

Share Document