Retracted Article: Visible-light-induced oxidative difunctionalization of styrenes: synthesis of α-trifluoromethylthio-substituted ketones

2018 ◽  
Vol 54 (16) ◽  
pp. 1976-1979 ◽  
Author(s):  
Arvind Kumar Yadav ◽  
Krishna Nand Singh
Keyword(s):  
Visible Light ◽  
Room Temperature ◽  
Present Approach ◽  
Eosin Y ◽  
Photoredox Catalysis ◽  
Retracted Article ◽  
Oxidative Difunctionalization

Synthesis of α-trifluoromethylthio-substituted ketones has been accomplished through photoredox catalysis from easily accessible styrenes. The present approach involves the use of inexpensive eosin Y as an organophotoredox catalyst and a CF3SO2Na/CS2 blend as a new source of SCF3 radicals at room temperature.

Metal-Free Regioselective Alkylation of Imidazo[1,2-a]pyridines with N-Hydroxyphthalimide Esters under Organic Photoredox Catalysis

Synlett ◽  
2020 ◽  
Vol 31 (04) ◽  
pp. 363-368 ◽  
Author(s):  
Can Jin ◽  
Bin Sun ◽  
Tengwei Xu ◽  
Liang Zhang ◽  
Rui Zhu ◽  
...  
Keyword(s):  
Visible Light ◽  
Carboxylic Acids ◽  
Room Temperature ◽  
Eosin Y ◽  
Photoredox Catalysis ◽  
Mechanistic Studies ◽  
Metal Free ◽  
Regioselective Alkylation ◽  
Decarboxylative Coupling ◽  
Aliphatic Carboxylic Acids

A visible-light-induced direct C–H alkylation of imidazo[1,2-a]pyridines has been developed. It proceeds at room temperature by employing inexpensive Eosin Y as a photocatalyst and alkyl N-hydroxyphthalimide (NHP) esters as alkylation reagents. A variety of NHP esters derived from aliphatic carboxylic acids (primary, secondary, and tertiary) were tolerated in this protocol, giving the corresponding C-5-alkylated products in moderate to excellent yields. Mechanistic studies indicate that a radical decarboxylative coupling pathway was involved in this process.

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.

Eosin Y–Yb(OTf)3 catalyzed visible light mediated electrocyclization/indole ring opening towards the synthesis of heterobiaryl-pyrazolo[3,4-b]pyridines

2018 ◽  
Vol 42 (9) ◽  
pp. 6617-6620 ◽  
Author(s):  
Shikha Singh ◽  
Parul Chauhan ◽  
Makthala Ravi ◽  
Prem P. Yadav
Keyword(s):  
Visible Light ◽  
Lewis Acid ◽  
Ring Opening ◽  
Room Temperature ◽  
Eosin Y ◽  
Indole Ring ◽  
Photo Catalysis

Synthesis of heterobiaryl-pyrazolo[3,4-b]pyridines via Lewis acid and visible light photo-catalysis at room temperature.

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.

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

PQS-enabled visible-light iridium photoredox catalysis in water at room temperature

2018 ◽  
Vol 20 (6) ◽  
pp. 1233-1237 ◽  
Author(s):  
Mei-jie Bu ◽  
Chun Cai ◽  
Fabrice Gallou ◽  
Bruce H. Lipshutz
Keyword(s):  
Visible Light ◽  
Room Temperature ◽  
Photoredox Catalysis

A new photocatalyst attached to the designer surfactant PQS has been developed that self-aggregates into micelles, thereby enabling photoredox catalysis conducted in water at room temperature without any additives or co-solvents.

ChemInform Abstract: Metal-Free, Room-Temperature, Radical Alkoxycarbonylation of Aryldiazonium Salts Through Visible-Light Photoredox Catalysis.

ChemInform ◽  
2015 ◽  
Vol 46 (25) ◽  
pp. no-no
Author(s):  
Wei Guo ◽  
Liang-Qiu Lu ◽  
Yue Wang ◽  
Ya-Ni Wang ◽  
Jia-Rong Chen ◽  
...  
Keyword(s):  
Visible Light ◽  
Room Temperature ◽  
Photoredox Catalysis ◽  
Metal Free

Metal-Free, Room-Temperature, Radical Alkoxycarbonylation of Aryldiazonium Salts through Visible-Light Photoredox Catalysis

2014 ◽  
Vol 54 (7) ◽  
pp. 2265-2269 ◽  
Author(s):  
Wei Guo ◽  
Liang-Qiu Lu ◽  
Yue Wang ◽  
Ya-Ni Wang ◽  
Jia-Rong Chen ◽  
...  
Keyword(s):  
Visible Light ◽  
Room Temperature ◽  
Photoredox Catalysis ◽  
Metal Free

Room Temperature CP Bond Formation Enabled by Merging Nickel Catalysis and Visible-Light-Induced Photoredox Catalysis

2015 ◽  
Vol 21 (13) ◽  
pp. 4962-4965 ◽  
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

Room temperature decarboxylative trifluoromethylation of α,β-unsaturated carboxylic acids by photoredox catalysis

2014 ◽  
Vol 50 (18) ◽  
pp. 2308-2310 ◽  
Author(s):  
Pan Xu ◽  
Ablimit Abdukader ◽  
Kaidong Hu ◽  
Yixiang Cheng ◽  
Chengjian Zhu
Keyword(s):  
Visible Light ◽  
Carboxylic Acids ◽  
Room Temperature ◽  
Photoredox Catalysis ◽  
Unsaturated Carboxylic Acids

A visible-light-induced decarboxylative trifluoromethylation of α,β-unsaturated carboxylic acids, which uses the Togni reagent as the CF3 source is disclosed.

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