scholarly journals Synthesis of aryl sulfides via radical–radical cross coupling of electron-rich arenes using visible light photoredox catalysis

2018 ◽  
Vol 14 ◽  
pp. 2520-2528 ◽  
Author(s):  
Amrita Das ◽  
Mitasree Maity ◽  
Simon Malcherek ◽  
Burkhard König ◽  
Julia Rehbein
Keyword(s):  
Visible Light ◽  
Experimental Evidence ◽  
Blue Light ◽  
Room Temperature ◽  
Cross Coupling ◽  
Light Irradiation ◽  
Coupling Mechanism ◽  
Photoredox Catalysis ◽  
Reaction Proceeds ◽  
Aryl Sulfides

Electron-rich arenes react with aryl and alkyl disulfides in the presence of catalytic amounts of [Ir(dF(CF3)ppy)2(dtbpy)]PF6 and (NH4)2S2O8 under blue light irradiation to yield arylthiols. The reaction proceeds at room temperature and avoids the use of prefunctionalized arenes. Experimental evidence suggests a radical–radical cross coupling mechanism.

A Visible Light Photoredox Catalysed Radical Pictet-Spengler Reaction

2020 ◽  
Vol 73 (3) ◽  
pp. 189
Author(s):  
Theerada Seehamongkol ◽  
Tyra H. Horngren ◽  
Mohammed A. M. Alhajji ◽  
Joshua Almond-Thynne ◽  
Milena L. Czyz ◽  
...  
Keyword(s):  
Visible Light ◽  
Room Temperature ◽  
Photoredox Catalysis ◽  
Thermal Transformations ◽  
Complementary Method ◽  
Reaction Proceeds ◽  
Radical Approach

A methodology for a radical Pictet–Spengler reaction promoted by visible light photoredox catalysis is described. This strategy furnishes tetrahydroisoquinoline derivatives bearing electron poor and electron rich substituents. The reaction proceeds at room temperature and with excellent regioselectivity for the 6-endo intramolecular cyclisation. This radical approach provides a complementary method for the synthesis of the tetrahydroisoquinoline scaffold with substitution patterns inaccessible via established thermal transformations.

scholarly journals g-C3N4/γ-Fe2O3/TiO2/Pd: a new magnetically separable photocatalyst for visible-light-driven fluoride-free Hiyama and Suzuki–Miyaura cross-coupling reactions at room temperature

2020 ◽  
Vol 44 (27) ◽  
pp. 11513-11526 ◽  
Author(s):  
Roya Jahanshahi ◽  
Asma Khazaee ◽  
Sara Sobhani ◽  
José Miguel Sansano
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Room Temperature ◽  
Cross Coupling ◽  
Light Irradiation ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Visible Light Driven ◽  
Magnetically Separable

g-C3N4/γ-Fe2O3/TiO2/Pd is developed as a new magnetically separable photocatalyst for efficient fluoride-free Hiyama and Suzuki–Miyaura cross-coupling reactions at room temperature under visible light irradiation.

Photoredox-catalyzed hydrosulfonylation reaction of electron-deficient alkenes with substituted Hantzsch esters and sulfur dioxide

2019 ◽  
Vol 55 (43) ◽  
pp. 6010-6013 ◽  
Author(s):  
Xuefeng Wang ◽  
Min Yang ◽  
Wenlin Xie ◽  
Xiaona Fan ◽  
Jie Wu
Keyword(s):  
Sulfur Dioxide ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Room Temperature ◽  
Light Irradiation ◽  
Photoredox Catalysis

A sulfonylation reaction of 4-substituted Hantzsch esters, DABCO·(SO2)2, and electron-deficient alkenes at room temperature in the presence of photoredox catalysis under visible light irradiation is described.

Visible-light-induced [4 + 2] cycloaddition of pentafulvenes by organic photoredox catalysis

2020 ◽  
Vol 18 (40) ◽  
pp. 8074-8078
Author(s):  
Kenta Tanaka ◽  
Yosuke Asada ◽  
Yujiro Hoshino ◽  
Kiyoshi Honda
Keyword(s):  
Visible Light ◽  
Room Temperature ◽  
Green Light ◽  
Light Irradiation ◽  
Photoredox Catalysis

We have developed thioxanthylium photoredox catalyzed [4 + 2] cycloaddition of pentafulvenes at room temperature under green light irradiation, which affords tetrahydrocyclopenta[b]chromenes with high regioselectivities.

The Merger of CF3SO2Na and Palladium Catalysis to Enable Decarboxylative Cross-Coupling for the Synthesis of Aromatic Ketones under Room Temperature

2021 ◽  
Author(s):  
Pan Xie ◽  
Cheng Xue ◽  
Cancan Wang ◽  
Dongdong Du ◽  
Sanshan Shi
Keyword(s):  
Visible Light ◽  
Room Temperature ◽  
Palladium Catalysis ◽  
Cross Coupling ◽  
Boronic Acids ◽  
Aromatic Ketones ◽  
Aryl Ketones ◽  
Oxocarboxylic Acids

A CF3SO2Na/Pd(OAc)2 co-catalyzed strategy is developed to produce aryl ketones via visible-light-induced decarboxylative cross-coupling of α-oxocarboxylic acids and aryl boronic acids. This process was perfomed under air at room temperature,...

In2S3/BiOI composites boost visible-light photocatalytic degradation of tetracycline hydrochloride

CrystEngComm ◽  
2021 ◽  
Author(s):  
Panbing Hu ◽  
Yanmei Xin ◽  
Congfei Yao ◽  
Yuqing Miao
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Visible Light Irradiation ◽  
Room Temperature ◽  
Light Irradiation ◽  
Tetracycline Hydrochloride ◽  
Structure And Morphology ◽  
Morphology Characterization ◽  
Visible Light Photocatalytic

The In2S3/BiOI composites were synthesized at room temperature which significantly improved the photocatalytic degradation performance of tetracycline hydrochloride (TC) under visible light irradiation. Structure and morphology characterization have been performed...

Study on formaldehyde gas-sensing of In2O3-sensitized ZnO nanoflowers under visible light irradiation at room temperature

2012 ◽  
Vol 22 (25) ◽  
pp. 12915 ◽  
Author(s):  
Lina Han ◽  
Dejun Wang ◽  
Jiabao Cui ◽  
Liping Chen ◽  
Tengfei Jiang ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Room Temperature ◽  
Gas Sensing ◽  
Light Irradiation

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.

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