Visible-light-mediated radical insertion/cyclization cascade reaction: synthesis of phenanthridines and isoquinolines from isocyanides

2017 ◽  
Vol 53 (33) ◽  
pp. 4585-4588 ◽  
Author(s):  
Shangbiao Feng ◽  
Tao Li ◽  
Chenglong Du ◽  
Peng Chen ◽  
Dengpeng Song ◽  
...  
Keyword(s):  
Visible Light ◽  
Cascade Reaction ◽  
Reaction Synthesis ◽  
Reaction Conditions

The development of a visible-light promoted radical insertion/cyclization cascade reaction to generate phenanthridines and isoquinolines from isocyanides under mild reaction conditions is reported.

Visible-Light Photoredox-Catalyzed Cascade Reaction for the Synthesis of Pyrrolo[2,1-a]isoquinoline-Substituted Phosphonates

Synthesis ◽  
2018 ◽  
Vol 51 (02) ◽  
pp. 522-529 ◽  
Author(s):  
Deqing Shi ◽  
Lingna Wang ◽  
Tiancong Ma ◽  
Mingming Qiao ◽  
Qiangxian Wu ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Room Temperature ◽  
Cascade Reaction ◽  
Efficient Synthesis ◽  
Reaction Conditions ◽  
One Pot ◽  
Oxidative Aromatization ◽  
Activated Olefins ◽  
Catalyzed Oxidation

A visible-light photoredox-catalyzed oxidation/[3+2] cycloaddition/oxidative aromatization cascade reaction of [(3,4-dihydroisoquinolin-2(1H)-yl)methyl]phosphonates and activated olefins or alkynes for the efficient synthesis of potentially biological active pyrrolo[2,1-a]isoquinoline-substituted phosphonates was developed. This transformation features mild reaction conditions (i.e., visible light irradiation, room temperature), molecular oxygen (O2) as a green oxidant, simple ‘one-pot’ operation.

Visible-light-mediated radical cascade reaction: synthesis of 3-bromocoumarins from alkynoates

2017 ◽  
Vol 15 (41) ◽  
pp. 8820-8826 ◽  
Author(s):  
Shangbiao Feng ◽  
Jinlai Li ◽  
Zaimin Liu ◽  
Haiyu Sun ◽  
Hongliang Shi ◽  
...  
Keyword(s):  
Visible Light ◽  
Cascade Reaction ◽  
Radical Addition ◽  
Reaction Synthesis ◽  
Radical Cascade

The development of a visible-light mediated bromo radical addition/spirocyclization/ester migration cascade reaction to generate 3-bromocoumarins from alkynoates is reported.

Visible-light-induced photoxidation-Povarov cascade reaction: synthesis of 2-arylquinoline through alcohol and N-benzylanilines under mild conditions via Ag/g-C3N4 nanometric semiconductor catalyst

2020 ◽  
Vol 56 (35) ◽  
pp. 4840-4843 ◽  
Author(s):  
Peng Wang ◽  
Xiaowen Wang ◽  
Xiyu Niu ◽  
Li Zhu ◽  
Xiaoquan Yao
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Cascade Reaction ◽  
Light Irradiation ◽  
Reaction Synthesis ◽  
Mild Conditions

Ag/g-C3N4 nanometric semiconductor catalyzed cascade reaction for the synthesis of 2-arylquinoline through alcohol and N-benzylanilines under visible light irradiation.

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.

scholarly journals Visible light mediated aerobic oxidative hydroxylation of 2-oxindole-3-carboxylate esters: an alternative approach to 3-hydroxy-2-oxindoles

2020 ◽  
Vol 26 (1) ◽  
pp. 168-175
Author(s):  
Jinge Wang ◽  
Siyitemer Osman ◽  
Xinjiang Lu ◽  
Junyi Chen ◽  
Xu-Dong Xia
Keyword(s):  
Visible Light ◽  
Molecular Oxygen ◽  
Reaction Conditions ◽  
Alternative Approach

AbstractA convenient aerobic oxidative hydroxylation of 3-substituted oxindoles under mild reaction conditions is described herein. This process was accomplished by the activation of molecular oxygen in the air in the presence of a photocatalyst under the irradiation of visible light. The desired product was delivered in up to 89% yield without the addition of base or stoichiometric oxidant.

Highly emissive fused diarylmaleimides synthesized by a cascade reaction of selective bromination and visible-light-driven cyclization

2021 ◽  
Vol 187 ◽  
pp. 109113
Author(s):  
Xin Zheng ◽  
Jingwei Wang ◽  
Duoduo Xiao ◽  
Huan Chen ◽  
Zhenghuan Lin ◽  
...  
Keyword(s):  
Visible Light ◽  
Cascade Reaction ◽  
Visible Light Driven

scholarly journals Visible Light-Enabled Paternò-Büchi Reaction via Triplet Energy Transfer for the Synthesis of Oxetanes

2020 ◽  
Author(s):  
Katie Rykaczewski ◽  
Corinna Schindler
Keyword(s):  
Energy Transfer ◽  
Visible Light ◽  
Uv Light ◽  
Cycloaddition Reaction ◽  
High Energy ◽  
Triplet Energy ◽  
Reaction Conditions ◽  
Triplet Energy Transfer

<div> <p>One of the most efficient ways to synthesize oxetanes is the light-enabled [2+2] cycloaddition reaction of carbonyls and alkenes, referred to as the Paternò-Büchi reaction. The reaction conditions for this transformation typically require the use of high energy UV light to excite the carbonyl, limiting the applications, safety, and scalability. We herein report the development of a visible light-mediated Paternò-Büchi reaction protocol that relies on triplet energy transfer from an iridium-based photocatalyst to the carbonyl substrates. This mode of activation is demonstrated for a variety of aryl glyoxylates and negates the need for both, visible light-absorbing carbonyl starting materials or UV light to enable access to a variety of functionalized oxetanes in up to 99% yield.</p> </div> <br>

Visible-Light-Promoted Three-Component Cycloaddition Reaction: Synthesis of 4-Functionalized 1,5-Disubstituted 1,2,3-Triazoles

2021 ◽  
Author(s):  
atul kumar ◽  
Navaneet Kumar ◽  
Deepak Bhadoria
Keyword(s):  
Visible Light ◽  
Cycloaddition Reaction ◽  
Reaction Synthesis ◽  
Terminal Alkynes ◽  
Sodium Salts ◽  
Three Component Reaction

A first visible-light promoted and photocatalyst-free three-component reaction protocol has been developed to synthesize 4-functionalized 1,5-disubstituted 1,2,3-triazoles from terminal alkynes, arylazides, and arylsulfinic acid sodium salts or arylsulfonyl hydrazides in...

Dinuclear zinc synergistic catalytic asymmetric phospha-Michael/Michael cascade reaction: synthesis of 1,2,3-trisubstituted indanes bearing phosphoryl groups

2019 ◽  
Vol 17 (17) ◽  
pp. 4301-4310 ◽  
Author(s):  
Bing-Kai Tao ◽  
Hua Yang ◽  
Yuan-Zhao Hua ◽  
Min-Can Wang
Keyword(s):  
Cascade Reaction ◽  
Reaction Synthesis ◽  
Catalytic Asymmetric ◽  
Phosphoryl Groups

A series of new 1,2,3-trisubstituted indane derivatives containing phosphorus groups are efficiently obtained via asymmetric dinuclear zinc synergistic catalytic phospha-Michael/Michael cascade reaction.

Three consecutive steps over the chirally modified Pt surface: asymmetric catalytic cascade reaction of 2-nitrophenylpyruvates

2015 ◽  
Vol 5 (2) ◽  
pp. 697-704 ◽  
Author(s):  
György Szőllősi ◽  
Lenke Kovács ◽  
Zsolt Makra
Keyword(s):  
Metal Surface ◽  
Catalytic Reaction ◽  
Cascade Reaction ◽  
Heterogeneous Catalytic Reaction ◽  
Reaction Conditions ◽  
Asymmetric Catalytic ◽  
Heterogeneous Catalytic

The influence of the reaction conditions on the asymmetric heterogeneous catalytic reaction of 2-nitrophenylpyruvates over Pt modified with cinchonidine showed that all three steps of the cascade occur on the metal surface.

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