A novel visible light mediated radical cyclization of enol lactones: a concise method for fluorinated polycyclic lactone scaffolds

2015 ◽  
Vol 51 (70) ◽  
pp. 13508-13510 ◽  
Author(s):  
Chuanhua Qu ◽  
Pan Xu ◽  
Wujiang Ma ◽  
Yixiang Cheng ◽  
Chengjian Zhu
Keyword(s):  
Free Radical ◽  
Visible Light ◽  
Radical Cyclization

A novel visible light mediated cyclization of enol lactones with difluoroacyl arenes via a free radical tandem difluoroalkylation and C–C coupling of butenolides is presented. This strategy provides a facile approach to potential biological fluorinated γ-butyrolactones with excellent diastereoselectivity.

ChemInform Abstract: Tin-Free Radical Cyclization Reactions Initiated by Visible Light Photoredox Catalysis.

ChemInform ◽  
2010 ◽  
Vol 41 (45) ◽  
pp. no-no
Author(s):  
Joseph W Tucker ◽  
John D. Nguyen ◽  
Jagan M. R. Narayanam ◽  
Scott W. Krabbe ◽  
Corey R. J. Stephenson
Keyword(s):  
Free Radical ◽  
Visible Light ◽  
Radical Cyclization ◽  
Photoredox Catalysis ◽  
Cyclization Reactions

Tin-free radical cyclization reactions initiated by visible light photoredox catalysis

2010 ◽  
Vol 46 (27) ◽  
pp. 4985 ◽  
Author(s):  
Joseph W. Tucker ◽  
John D. Nguyen ◽  
Jagan M. R. Narayanam ◽  
Scott W. Krabbe ◽  
Corey R. J. Stephenson
Keyword(s):  
Free Radical ◽  
Visible Light ◽  
Radical Cyclization ◽  
Photoredox Catalysis ◽  
Cyclization Reactions

Design, Synthesis and Use of Phthalocyanines as a New Class of Visible-Light Photoinitiators for Free-Radical and Cationic Polymerizations

2021 ◽  
Author(s):  
Davy-Louis Versace ◽  
Louise Breloy ◽  
Yusuf Yagci ◽  
Ismail Yilmaz ◽  
Ozgur Yavuz
Keyword(s):  
Free Radical ◽  
Visible Light ◽  
Design Synthesis ◽  
New Class ◽  
Optical Stability ◽  
Cationic Polymerizations

Phthalocyanines (Pcs) are interesting molecules offering a fascinating chemistry world which received tremendous interest in the last decade. Their certain features such as high thermal, chemical, and optical stability as...

scholarly journals Panchromatic Copper Complexes for Visible Light Photopolymerization

Photochem ◽  
2021 ◽  
Vol 1 (2) ◽  
pp. 167-189
Author(s):  
Alexandre Mau ◽  
Guillaume Noirbent ◽  
Céline Dietlin ◽  
Bernadette Graff ◽  
Didier Gigmes ◽  
...  
Keyword(s):  
Free Radical ◽  
Visible Light ◽  
Radical Polymerization ◽  
Copper Complexes ◽  
Free Radical Polymerization ◽  
Photoluminescence Properties ◽  
System Formation ◽  
Iodonium Salt ◽  
Visible Light Photopolymerization ◽  
Cationic Polymerizations

In this work, eleven heteroleptic copper complexes were designed and studied as photoinitiators of polymerization in three-component photoinitiating systems in combination with an iodonium salt and an amine. Notably, ten of them exhibited panchromatic behavior and could be used for long wavelengths. Ferrocene-free copper complexes were capable of efficiently initiating both the radical and cationic polymerizations and exhibited similar performances to that of the benchmark G1 system. Formation of acrylate/epoxy IPNs was also successfully performed even upon irradiation at 455 nm or at 530 nm. Interestingly, all copper complexes containing the 1,1′-bis(diphenylphosphino)ferrocene ligand were not photoluminescent, evidencing that ferrocene could efficiently quench the photoluminescence properties of copper complexes. Besides, these ferrocene-based complexes were capable of efficiently initiating free radical polymerization processes. The ferrocene moiety introduced in the different copper complexes affected neither their panchromatic behaviors nor their abilities to initiate free radical polymerizations.

scholarly journals Free Radical Chemistry Enabled by Visible Light-Induced Electron Transfer

2016 ◽  
Vol 49 (10) ◽  
pp. 2295-2306 ◽  
Author(s):  
Daryl Staveness ◽  
Irene Bosque ◽  
Corey R. J. Stephenson
Keyword(s):  
Electron Transfer ◽  
Free Radical ◽  
Visible Light ◽  
Radical Chemistry ◽  
Free Radical Chemistry

A Visible Light Initiating System for Free Radical Promoted Cationic Polymerization

1994 ◽  
Vol 27 (14) ◽  
pp. 3683-3693 ◽  
Author(s):  
Yubai Bi ◽  
Douglas C. Neckers
Keyword(s):  
Free Radical ◽  
Visible Light ◽  
Cationic Polymerization

ChemInform Abstract: Manganese(III)-Based Asymmetric Oxidative Free-Radical Cyclization of Unsaturated β-Keto Sulfoxides.

ChemInform ◽  
2010 ◽  
Vol 22 (20) ◽  
pp. no-no
Author(s):  
B. B. SNIDER ◽  
B. Y.-F. WAN ◽  
B. O. BUCKMAN ◽  
B. M. FOXMAN
Keyword(s):  
Free Radical ◽  
Radical Cyclization
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