Energy Transfer Catalysis by Visible Light: Atrop- and Regio-Selective Intermolecular [2+2]-Photocycloaddition of Maleimide with Alkenes

2019 ◽  
Vol 2020 (10) ◽  
pp. 1478-1481 ◽  
Author(s):  
Sapna Ahuja ◽  
Steffen Jockusch ◽  
Angel Ugrinov ◽  
Jayaraman Sivaguru
Keyword(s):  
Energy Transfer ◽  
Visible Light

Visible-Light Photosensitized Aryl and Alkyl Decarboxylative Carbon-Heteroatom and Carbon-Carbon Bond Formations

2019 ◽  
Author(s):  
Tuhin Patra ◽  
Satobhisha Mukherjee ◽  
Jiajia Ma ◽  
Felix Strieth-Kalthoff ◽  
Frank Glorius
Keyword(s):  
Energy Transfer ◽  
Visible Light ◽  
Alkyl Radical ◽  
General Strategy ◽  
Alkyl Radicals ◽  
Bond Forming ◽  
Radical Trapping ◽  
Carbon Carbon Bond ◽  
Radical Generation ◽  
Trapping Agent

<sub>A general strategy to access both aryl and alkyl radicals by photosensitized decarboxylation of the corresponding carboxylic acids esters has been developed. An energy transfer mediated homolysis of unsymmetrical sigma-bonds for a concerted fragmentation/decarboxylation process is involved. As a result, an independent aryl/alkyl radical generation step enables a series of key C-X and C-C bond forming reactions by simply changing the radical trapping agent.</sub>

Visible light stimulating dual-wavelength emission and O vacancy involved energy transfer behavior in luminescence for coaxial nanocable arrays

2014 ◽  
Vol 115 (22) ◽  
pp. 224308 ◽  
Author(s):  
Lei Yang ◽  
Jiazhang Dong ◽  
Zhongcheng Jiang ◽  
Anlian Pan ◽  
Xiujuan Zhuang
Keyword(s):  
Energy Transfer ◽  
Visible Light ◽  
Dual Wavelength ◽  
Transfer Behavior ◽  
Wavelength Emission ◽  
O Vacancy

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>

Synthesis of Naphthocyclobutenes from α-Naphthyl Acrylates by Visible-Light Energy-Transfer Catalysis

2019 ◽  
Vol 21 (11) ◽  
pp. 4365-4369 ◽  
Author(s):  
Theodor Peez ◽  
Veronika Schmalz ◽  
Klaus Harms ◽  
Ulrich Koert
Keyword(s):  
Energy Transfer ◽  
Visible Light ◽  
Light Energy

Energy transfer in covalent organic frameworks for visible-light-induced hydrogen evolution

2019 ◽  
Vol 44 (23) ◽  
pp. 11872-11876 ◽  
Author(s):  
San-Yuan Ding ◽  
Peng-Lai Wang ◽  
Guan-Lin Yin ◽  
Xuqiang Zhang ◽  
Gongxuan Lu
Keyword(s):  
Energy Transfer ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Covalent Organic Frameworks
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