Cooperative iodine and photoredox catalysis for direct oxidative lactonization of carboxylic acids

2019 ◽  
Vol 55 (7) ◽  
pp. 933-936 ◽  
Author(s):  
Thomas Duhamel ◽  
Kilian Muñiz
Keyword(s):  
Visible Light ◽  
Carboxylic Acids ◽  
Molecular Iodine ◽  
Organic Dye ◽  
Photoredox Catalysis ◽  
Cooperative Catalysis

C–H lactonization is enabled by visible light-promoted cooperative catalysis combining molecular iodine and an organic dye.

Decarboxylative sulfenylation of amino acids via metallaphotoredox catalysis

2019 ◽  
Vol 6 (18) ◽  
pp. 3224-3227 ◽  
Author(s):  
Lidan Wei ◽  
Chengjuan Wu ◽  
Chen-Ho Tung ◽  
Wenguang Wang ◽  
Zhenghu Xu
Keyword(s):  
Amino Acids ◽  
Visible Light ◽  
Carboxylic Acids ◽  
Mild Conditions ◽  
Cooperative Catalysis

A nickel/visible light photoredox co-catalyzed decarboxylative thiolation reaction of carboxylic acids has been developed. This odorless sulfenylation reaction proceeded well via a nickel/photoredox cooperative catalysis pathway under very mild conditions.

scholarly journals Acyl Radicals from Aromatic Carboxylic Acids by Means of Visible-Light Photoredox Catalysis

2015 ◽  
Vol 127 (47) ◽  
pp. 14272-14275 ◽  
Author(s):  
Giulia Bergonzini ◽  
Carlo Cassani ◽  
Carl-Johan Wallentin
Keyword(s):  
Visible Light ◽  
Carboxylic Acids ◽  
Photoredox Catalysis ◽  
Aromatic Carboxylic Acids ◽  
Acyl Radicals

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.

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.

scholarly journals Visible light photooxidation of nitrate: the dawn of a nocturnal radical

2015 ◽  
Vol 51 (30) ◽  
pp. 6568-6571 ◽  
Author(s):  
T. Hering ◽  
T. Slanina ◽  
A. Hancock ◽  
U. Wille ◽  
B. König
Keyword(s):  
Visible Light ◽  
Organic Dye ◽  
Photoredox Catalysis ◽  
Nitrate Radicals ◽  
Nitrate Salts

Highly oxidizing nitrate radicals (NO3˙) are easily accessed from readily available nitrate salts by visible light photoredox catalysis using a purely organic dye as the catalyst and oxygen as the terminal oxidant.

Decarboxylative Alkynylation and Carbonylative Alkynylation of Carboxylic Acids Enabled by Visible-Light Photoredox Catalysis

2015 ◽  
Vol 54 (38) ◽  
pp. 11196-11199 ◽  
Author(s):  
Quan-Quan Zhou ◽  
Wei Guo ◽  
Wei Ding ◽  
Xiong Wu ◽  
Xi Chen ◽  
...  
Keyword(s):  
Visible Light ◽  
Carboxylic Acids ◽  
Photoredox Catalysis

Metal-free oxidative phosphinylation of aryl alkynes to β-ketophosphine oxides via visible-light photoredox catalysis

2016 ◽  
Vol 6 (2) ◽  
pp. 413-416 ◽  
Author(s):  
Mei-jie Bu ◽  
Guo-ping Lu ◽  
Chun Cai
Keyword(s):  
Visible Light ◽  
Organic Dye ◽  
Photoredox Catalysis ◽  
Metal Free ◽  
Mild Conditions ◽  
Aryl Alkynes

A visible-light-induced oxidative phosphinylation of arylacetylenes catalyzed by an inexpensive organic dye was demonstrated to be effective under mild conditions.

scholarly journals Mild, visible light-mediated decarboxylation of aryl carboxylic acids to access aryl radicals

2017 ◽  
Vol 8 (5) ◽  
pp. 3618-3622 ◽  
Author(s):  
L. Candish ◽  
M. Freitag ◽  
T. Gensch ◽  
F. Glorius
Keyword(s):  
Visible Light ◽  
Carboxylic Acids ◽  
Radical Formation ◽  
Photoredox Catalysis ◽  
Aryl Radical ◽  
Aryl Radicals

Herein we present the first example of aryl radical formation via the visible light-mediated decarboxylation of aryl carboxylic acids using photoredox catalysis.

ChemInform Abstract: Decarboxylative Alkynylation and Carbonylative Alkynylation of Carboxylic Acids Enabled by Visible-Light Photoredox Catalysis.

ChemInform ◽  
2016 ◽  
Vol 47 (6) ◽  
pp. no-no
Author(s):  
Quan-Quan Zhou ◽  
Wei Guo ◽  
Wei Ding ◽  
Xiong Wu ◽  
Xi Chen ◽  
...  
Keyword(s):  
Visible Light ◽  
Carboxylic Acids ◽  
Photoredox Catalysis
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