Room Temperature Coupling of Aryldiazoacetates with Boronic Acids Enhanced by Blue Light Irradiation

2020 ◽  
Vol 26 (25) ◽  
pp. 5648-5653 ◽  
Author(s):  
Amanda F. Silva ◽  
Marco A. S. Afonso ◽  
Rodrigo A. Cormanich ◽  
Igor D. Jurberg
Keyword(s):  
Blue Light ◽  
Room Temperature ◽  
Boronic Acids ◽  
Light Irradiation

scholarly journals Cover Feature: Room Temperature Coupling of Aryldiazoacetates with Boronic Acids Enhanced by Blue Light Irradiation (Chem. Eur. J. 25/2020)

2020 ◽  
Vol 26 (25) ◽  
pp. 5555-5555
Author(s):  
Amanda F. Silva ◽  
Marco A. S. Afonso ◽  
Rodrigo A. Cormanich ◽  
Igor D. Jurberg
Keyword(s):  
Blue Light ◽  
Room Temperature ◽  
Boronic Acids ◽  
Light Irradiation

scholarly journals Blue light-promoted photolysis of aryldiazoacetates

2018 ◽  
Vol 9 (22) ◽  
pp. 5112-5118 ◽  
Author(s):  
Igor D. Jurberg ◽  
Huw M. L. Davies
Keyword(s):  
Carboxylic Acids ◽  
Blue Light ◽  
Room Temperature ◽  
Light Irradiation

Aryldiazoacetates can undergo photolysis under blue light irradiation (460–490 nm) at room temperature and under air in the presence of numerous trapping agents, such as styrene, carboxylic acids, amines, alkanes and arenes, thus providing a straighforward and general platform for their mild functionalization.

scholarly journals Oxidative Hydroxylation of Aryl Boronic Acid Catalyzed by Co-porphyrin Complexes via Blue-Light Irradiation

Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1262
Author(s):  
Alaa A. Atia ◽  
Masanari Kimura
Keyword(s):  
Blue Light ◽  
Biodegradable Polymers ◽  
Boronic Acid ◽  
Oxidation Process ◽  
Boronic Acids ◽  
Light Irradiation ◽  
Phenol Derivatives ◽  
Oxidative Reactions ◽  
Acid Catalyzed ◽  
Aryl Boronic Acid

Oxidative reactions often require unstable and environmentally harmful oxidants; therefore, the investigation of safer alternatives is urgent. Here, the hydroxylation of aryl boronic acid in the presence of Co-complexes is demonstrated. Tetrakis(4-carboxyphenyl) Co(II)-porphyrin was combined with biodegradable polymers such as chitosan catalyzed hydroxylation of phenyl boronic acids to form phenol derivatives under blue-light irradiation. This catalytic system can be used as an eco-friendly oxidation process that does not release oxidizing agents into the atmosphere.

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.

Green Photoorganocatalytic Synthesis of Phenols from Arylboronic Acids

Synlett ◽  
2017 ◽  
Vol 29 (10) ◽  
pp. 1324-1328 ◽  
Author(s):  
Christoforos Kokotos ◽  
Ioanna Sideri ◽  
Errika Voutyritsa
Keyword(s):  
Functional Groups ◽  
Room Temperature ◽  
Boronic Acids ◽  
Light Irradiation ◽  
Reaction Conditions ◽  
Arylboronic Acids ◽  
Water As Solvent ◽  
High Yields

A green and cheap protocol for the photocatalytic hydroxylation of arylboronic acids is presented. 2,2-Dimethoxy-2-phenylacetophenone proved to be the best photoinitiator, among a range of organocatalysts in promoting this reaction. This photocatalytic protocol can be expanded into a wide substrate scope of aromatic boronic acids bearing various functional groups, leading to the corresponding phenols in good to high yields under mild reaction conditions, which include water as solvent, light irradiation provided from standard light-bulbs at room temperature.

Tyrosine-Selective Bioconjugation with Iminoxyl Radicals

2020 ◽  
Author(s):  
Katsuya Maruyama ◽  
Takashi Ishiyama ◽  
Yohei Seki ◽  
Kounosuke Oisaki ◽  
Motomu Kanai
Keyword(s):  
Reaction Time ◽  
Steric Hindrance ◽  
Room Temperature ◽  
Water Soluble ◽  
Light Irradiation ◽  
Sodium Ascorbate ◽  
Iminoxyl Radical ◽  
Short Reaction Time ◽  
Modified Peptides ◽  
The Stability

A novel Tyr-selective protein bioconjugation using the water-soluble persistent iminoxyl radical is described. The conjugation proceeded with high Tyr-selectivity and short reaction time under biocompatible conditions (room temperature in buffered media under air). The stability of the conjugates was tunable depending on the steric hindrance of iminoxyl. The presence of sodium ascorbate and/or light irradiation promoted traceless deconjugation, restoring the native Tyr structure. The method is applied to the synthesis of a protein-dye conjugate and further derivatization to azobenzene-modified peptides.

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...

scholarly journals Correction to “Photocatalyst-Free Singlet Oxygen-Induced Oxygenation: A Strategy for the Preparation of 5-Cyano-2-pyridones Driven by Blue-Light Irradiation”

2020 ◽  
Vol 85 (14) ◽  
pp. 9446-9446
Author(s):  
Mengmeng Zhang ◽  
Hanyang Lan ◽  
Nan Li ◽  
Qidi Zhong ◽  
Hao Zhu ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Blue Light ◽  
Light Irradiation
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