Visible light-driven oxidation of vanillyl alcohol in air with Au–Pd bimetallic nanoparticles on phosphorylated hydrotalcite

2019 ◽  
Vol 43 (4) ◽  
pp. 1964-1971 ◽  
Author(s):  
Miao Wu ◽  
Jin-Hui Pang ◽  
Ping-Ping Song ◽  
Jian-Jun Peng ◽  
Feng Xu ◽  
...  
Keyword(s):  
Visible Light ◽  
Bimetallic Nanoparticles ◽  
Vanillyl Alcohol ◽  
Reaction Conditions ◽  
Visible Light Driven

This catalyst could recurrently realize the production of vanillin from vanilla alcohol under mild reaction conditions due to the synergistically double dehydrogenative oxidation (SDDO).

scholarly journals Visible Light Photochemical Reactions for Nucleic Acid-Based Technologies

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 556
Author(s):  
Bonwoo Koo ◽  
Haneul Yoo ◽  
Ho Jeong Choi ◽  
Min Kim ◽  
Cheoljae Kim ◽  
...  
Keyword(s):  
Nucleic Acid ◽  
Nucleic Acids ◽  
Visible Light ◽  
Chemical Reactions ◽  
Chemical Biology ◽  
Photochemical Reactions ◽  
Reaction Conditions ◽  
Promising Tool ◽  
Recent Developments ◽  
Visible Light Driven

The expanding scope of chemical reactions applied to nucleic acids has diversified the design of nucleic acid-based technologies that are essential to medicinal chemistry and chemical biology. Among chemical reactions, visible light photochemical reaction is considered a promising tool that can be used for the manipulations of nucleic acids owing to its advantages, such as mild reaction conditions and ease of the reaction process. Of late, inspired by the development of visible light-absorbing molecules and photocatalysts, visible light-driven photochemical reactions have been used to conduct various molecular manipulations, such as the cleavage or ligation of nucleic acids and other molecules as well as the synthesis of functional molecules. In this review, we describe the recent developments (from 2010) in visible light photochemical reactions involving nucleic acids and their applications in the design of nucleic acid-based technologies including DNA photocleaving, DNA photoligation, nucleic acid sensors, the release of functional molecules, and DNA-encoded libraries.

Visible-Light-Driven Organic Photochemical Reactions in the Absence of External Photocatalysts

Synthesis ◽  
2019 ◽  
Vol 51 (16) ◽  
pp. 3021-3054 ◽  
Author(s):  
Yi Wei ◽  
Quan-Quan Zhou ◽  
Fen Tan ◽  
Liang-Qiu Lu ◽  
Wen-Jing Xiao
Keyword(s):  
Visible Light ◽  
Transition Metal Complexes ◽  
Organic Dyes ◽  
Photochemical Reactions ◽  
Reaction Intermediates ◽  
Organic Transformations ◽  
Reaction Conditions ◽  
Inorganic Semiconductors ◽  
Visible Light Driven ◽  
Representative Work

Visible-light-driven organic photochemical reactions have attracted substantial attention from the synthetic community. Typically, catalytic quantities of photosensitizers, such as transition metal complexes, organic dyes, or inorganic semiconductors, are necessary to absorb visible light and trigger subsequent organic transformations. Recently, in contrast to these photocatalytic processes, a variety of photocatalyst-free organic photochemical transformations have been exploited for the efficient formation of carbon–carbon and carbon–heteroatom bonds. In addition to not requiring additional photocatalysts, they employ low-energy visible light irradiation, have mild reaction conditions, and enable broad substrate diversity and functional group tolerance. This review will focus on a summary of representative work in this field in terms of different photoexcitation modes.1 Introduction2 Visible Light Photoexcitation of a Single Substrate3 Visible Light Photoexcitation of Reaction Intermediates4 Visible Light Photoexcitation of EDA Complexes between Substrates5 Visible Light Photoexcitation of EDA Complexes between Substrates and Reaction Intermediates6 Visible Light Photoexcitation of Products7 Conclusion and Outlook

Enhanced visible-light-driven photocatalytic activity of Au@Ag core–shell bimetallic nanoparticles immobilized on electrospun TiO2 nanofibers for degradation of organic compounds

2017 ◽  
Vol 7 (3) ◽  
pp. 570-580 ◽  
Author(s):  
Mrinmoy Misra ◽  
Narendra Singh ◽  
Raju Kumar Gupta
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Organic Compounds ◽  
Shell Thickness ◽  
Bimetallic Nanoparticles ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Tio2 Nanofibers ◽  
Visible Light Driven ◽  
Core Shell Nanoparticles

In this work, Au@Ag core–shell nanoparticles (NPs) with variable Ag shell thickness were synthesized and immobilized on TiO2 nanofibers (TNF).

scholarly journals Synthesis and Characterization of Novel Phyto-Mediated Catalyst, and Its Application for a Selective Oxidation of (VAL) into Vanillin under Visible Light

Catalysts ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 839 ◽  
Author(s):  
Afnan Al-Hunaiti ◽  
Qassem Mohaidat ◽  
Ibrahim Bsoul ◽  
Sami Mahmood ◽  
Deeb Taher ◽  
...  
Keyword(s):  
Visible Light ◽  
Selective Oxidation ◽  
Vanillyl Alcohol ◽  
Reaction Conditions ◽  
Excellent Photocatalytic Activity ◽  
Lignin Model ◽  
Turn Over Frequency ◽  
Average Size ◽  
Turn Over

Here, we report an efficient and highly selective oxidation of lignin model substrate using phyto-mediated ZnFe2O4 nanoparticle using Boswellia carterii extract. The nanocatalyst with an average size of 8 nm showed excellent photocatalytic activity of the synthesized carbonyl containing products under visible light irradiation. The catalytic activity and selectivity towards oxidation of vanillyl alcohol to vanillin with selectivity up to 99% at conversion over 98% and turn-over frequency values up to 1600 h−1 were obtained in the presence of H2O2 and base. The cubic spinel nano-ZnFe2O4 catalyst was characterized by powder-XRD, FESEM, HR-TEM and Mössbauer analysis. The demonstrated catalyst was robust and stable under the reaction conditions. Furthermore, it was easy to be separated from the reaction mixture and be reused for subsequent reactions up to 5 times without significant reactivity or selectivity loss.

An ultrastable olefin-linked covalent organic framework for photocatalytic decarboxylative alkylations under highly acidic conditions

2021 ◽  
Author(s):  
Miao Tian ◽  
Yichun Wang ◽  
Xiubin Bu ◽  
Yichen Wang ◽  
Xiaobo Yang
Keyword(s):  
Visible Light ◽  
Basic Structure ◽  
Two Dimensional ◽  
Covalent Organic Frameworks ◽  
Organic Transformations ◽  
Organic Reaction ◽  
Reaction Conditions ◽  
Covalent Organic Framework ◽  
Visible Light Driven ◽  
Acidic Conditions

The application of two-dimensional covalent organic frameworks (2D-COFs) as photoredox catalysts offers a sustainable alternative for visible-light-driven organic transformations. However, under highly complicated organic reaction conditions, maintaining their basic structure...

Visible-Light-Driven Phosphonoalkylation of Alkenes

Synlett ◽  
2021 ◽  
Vol 32 (04) ◽  
pp. 378-382
Author(s):  
Yue-Ming Jiang ◽  
Jie Liu ◽  
Qiang Fu ◽  
Yu-Ming Yu ◽  
Da-Gang Yu
Keyword(s):  
Transition Metal ◽  
Visible Light ◽  
Functional Group ◽  
Reaction Conditions ◽  
Metal Free ◽  
Alkyl Sulfonates ◽  
Visible Light Driven ◽  
High Yields

AbstractPhosphonylation of alkenes is important for the generation of valuable organophosphines. However, redox-neutral difunctionalization of alkenes with readily available H-P(O) compounds remains underdeveloped. Herein, we report the first visible-light-driven redox-neutral phosphonoalkylation of alkenes. A variety of organophosphorus-containing three-membered carbocyclic scaffolds are synthesized from alkene-bearing alkyl sulfonates with H-P(O) compounds. The transition-metal-free protocol displays good functional group tolerance, broad substrate scope, high yields, and mild reaction conditions.

Visible light-driven selective hydrogenation of unsaturated aromatics in an aqueous solution by direct photocatalysis of Au nanoparticles

2018 ◽  
Vol 8 (3) ◽  
pp. 726-734 ◽  
Author(s):  
Yiming Huang ◽  
Zhe Liu ◽  
Guoping Gao ◽  
Qi Xiao ◽  
Wayde Martens ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Visible Light ◽  
Gold Nanoparticle ◽  
Selective Hydrogenation ◽  
Au Nanoparticles ◽  
Chemical Bonds ◽  
Reaction Conditions ◽  
Visible Light Driven ◽  
Supported Gold

Selective hydrogenation of various chemical bonds, such as CC, CC, CO, NO, and CN, is efficiently driven by visible light over a supported gold nanoparticle (AuNP) photocatalyst under mild reaction conditions.

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