Free-Radical Copolymerization Behavior of 5,6-Benzo-2-methylene-1,3-dioxepane and Methacrylic Acid via the in Situ Generation of 3-Methyl-1,5-dihydrobenzo[e][1,3]dioxepin-3-yl Methacrylate and 2-(Acetoxymethyl)benzyl Methacrylate

2007 ◽  
Vol 40 (22) ◽  
pp. 7834-7841 ◽  
Author(s):  
Liqun Ren ◽  
Christian Speyerer ◽  
Seema Agarwal
Keyword(s):  
Free Radical ◽  
Methacrylic Acid ◽  
Radical Copolymerization ◽  
Free Radical Copolymerization ◽  
In Situ Generation

scholarly journals MONOLITHIC DISK FOR THE FAST CHROMATOGRAPHIC SEPARATION

2010 ◽  
Vol 5 (2) ◽  
pp. 108-114
Author(s):  
Nurul Hidayat Aprilita ◽  
Rania Bakry ◽  
Christian W Huck ◽  
Guenther K Bonn
Keyword(s):  
Free Radical ◽  
Mobile Phase ◽  
Radical Copolymerization ◽  
Reversed Phase ◽  
Rapid Separation ◽  
Free Radical Copolymerization ◽  
Reversed Phase Chromatography ◽  
Styrene Divinylbenzene ◽  
Separation Of Proteins

Poly(styrene/divinylbenzene) (PS/DVB) monolithic disk was prepared by in situ free-radical copolymerization of styrene and divinylbenzene in the presence of decanol and tetrahydrofuran as porogens. PS/DVB monolithic disks were produced in two different lengths 1.5 mm and 3 mm. The disks were used in reversed phase chromatography of proteins with 0.2 % trifuoroacetic acid (TFA) and 0.2 % TFA in acetonitrile as mobile phase A and B, respectively. The effect of gradient rate, flow rate, temperature and disk length on the separation of proteins were also studied. PS/DVB monolithic disks allow the rapid separation of proteins in reversed phase chromatography. Keywords: monolithic disk, poly(styrene/divinylbenzene), proteins

Recent advances in Minisci-type reactions and applications in organic synthesis

2020 ◽  
Vol 24 ◽  
Author(s):  
Wengui Wang ◽  
Shoufeng Wang
Keyword(s):  
Free Radical ◽  
Hydrogen Atom ◽  
Organic Synthesis ◽  
Radical Reactivity ◽  
Atom Loss ◽  
Radical Generation ◽  
In Situ Generation ◽  
Thermal Cleavage ◽  
Synthetic Chemist

Abstract:: Minisci-type reactions have become widely known as reactions that involve the addition of carbon-centered radicals to basic heteroarenes followed by formal hydrogen atom loss. While the originally developed protocols for radical generation remain in active use today, in recent years by a new array of radical generation strategies allow use of a wider variety of radical precursors that often operate under milder and more benign conditions. New transformations based on free radical reactivity are now available to a synthetic chemist looking to utilize a Minisci-type reaction. Radical-generation methods based on photoredox catalysis and electrochemistry, which utilize thermal cleavage or the in situ generation of reactive radical precursors, have become popular approaches. Our review will cover the remarkably literature that has appeared on this topic in recent 5 years, from 2015-01 to 2020-01, in an attempt to provide guidance to the synthetic chemist, on both the challenges that have been overcome and applications in organic synthesis.

High-pressure free-radical copolymerization of ethene and 2-ethylhexyl acrylate

1996 ◽  
Vol 197 (12) ◽  
pp. 4119-4134 ◽  
Author(s):  
Michael Buback ◽  
Thomas Dröge ◽  
Alex Van Herk ◽  
Frank-Olaf Mähling
Keyword(s):  
High Pressure ◽  
Free Radical ◽  
Radical Copolymerization ◽  
Free Radical Copolymerization
Sign in / Sign up

Export Citation Format

Share Document