In-situ generation and analysis of charge transfer materials using an OTTLE cell and resonance Raman scatteringElectronic supplementary information (ESI) available: BPW91/6-31G(d) predicted vibrational frequencies and intensities for the neutral, radical cation and dication species of 1 and 2. See http://www.rsc.org/suppdata/cp/b4/b402015d/

2004 ◽  
Vol 6 (13) ◽  
pp. 3257 ◽  
Author(s):  
Rachael E. Littleford ◽  
Michael A. J. Paterson ◽  
Paul J. Low ◽  
Daniel R. Tackley ◽  
Linda Jayes ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Radical Cation ◽  
Resonance Raman ◽  
Vibrational Frequencies ◽  
Supplementary Information ◽  
Neutral Radical ◽  
In Situ Generation ◽  
Charge Transfer Materials

One-pot Nitration of Phenols under Mild and Heterogeneous Conditions

2001 ◽  
Vol 2001 (4) ◽  
pp. 140-142 ◽  
Author(s):  
Mohammad Ali Zolfigol ◽  
Mojtaba Bagherzadeh ◽  
Elahe Madrakian ◽  
Ezat Ghaemi ◽  
Abolfazl Taqian-Nasab
Keyword(s):  
Radical Cation ◽  
Nitrous Acid ◽  
Room Temperature ◽  
Hydrogen Abstraction ◽  
One Pot ◽  
Oxidation Of Phenols ◽  
In Situ Generation ◽  
High Yields

Nitrophenols can be obtained via nitrosation–oxidation of phenols with Oxone®, NaNO2 and wet SiO2 at room temperature in moderate to high yields. In situ generation of HNO2 and the radical cation mechanism via the nitrous acid catalysed (NAC) pathway or hydrogen abstraction involving NO2 appear to be applicable to phenol nitration using these reagents.

Para-Selective Borylation of Monosubstituted Arenes Using a Transient Mediator

2019 ◽  
Author(s):  
Jie Wu ◽  
Xiao-Yue Chen ◽  
Yichen Wu ◽  
Daoming Wang ◽  
Peng Wang
Keyword(s):  
Radical Cation ◽  
Steric Hindrance ◽  
Mechanistic Study ◽  
Salt Formation ◽  
Sulfonium Salt ◽  
Trifluoromethanesulfonic Anhydride ◽  
In Situ Generation

Herein, we conceptualized a transient mediator approach that has the capability of <i>para</i>-selective C–H functionalization of monosubstituted aromatics. This approach is enabled by in situ generation of a versatile sulfonium salt via highly electrophilic phenoxathiine or thianthrene radical cation intermediate which can be readily generated from its sulfoxide with trifluoromethanesulfonic anhydride. Preliminary mechanistic study unveiled that the remarkable <i>para</i> selectivity is related to the incredible electrophilicity and steric hindrance of phenoxathiine or thianthrene radical cation. The versatility of this approach was demonstrated via <i>para</i>-borylation of various monosubstituted simple aromatics combining the sulfonium salt formation with further photocatalyzed transformation.

Para-Selective Borylation of Monosubstituted Arenes Using a Transient Mediator

2019 ◽  
Author(s):  
Jie Wu ◽  
Xiao-Yue Chen ◽  
Yichen Wu ◽  
Daoming Wang ◽  
Peng Wang
Keyword(s):  
Radical Cation ◽  
Steric Hindrance ◽  
Mechanistic Study ◽  
Salt Formation ◽  
Sulfonium Salt ◽  
Trifluoromethanesulfonic Anhydride ◽  
In Situ Generation

Herein, we conceptualized a transient mediator approach that has the capability of <i>para</i>-selective C–H functionalization of monosubstituted aromatics. This approach is enabled by in situ generation of a versatile sulfonium salt via highly electrophilic phenoxathiine or thianthrene radical cation intermediate which can be readily generated from its sulfoxide with trifluoromethanesulfonic anhydride. Preliminary mechanistic study unveiled that the remarkable <i>para</i> selectivity is related to the incredible electrophilicity and steric hindrance of phenoxathiine or thianthrene radical cation. The versatility of this approach was demonstrated via <i>para</i>-borylation of various monosubstituted simple aromatics combining the sulfonium salt formation with further photocatalyzed transformation.

Highly diastereo- and enantioselective organocatalytic synthesis of trifluoromethylated erythritols based on the in situ generation of unstable trifluoroacetaldehyde

2021 ◽  
Author(s):  
Kazumasa Funabiki ◽  
Toshiya Gotoh ◽  
Ryunosuke Kani ◽  
Toshiyasu Inuzuka ◽  
Yasuhiro Kubota
Keyword(s):  
Trifluoromethyl Group ◽  
In Situ Generation

A highly diastereo- and enantioselective organocatalytic method to synthesise erythritols bearing a trifluoromethyl group has been investigated.

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.

scholarly journals A residue-free approach to water disinfection using catalytic in situ generation of reactive oxygen species

2021 ◽  
Author(s):  
Thomas Richards ◽  
Jonathan H. Harrhy ◽  
Richard J. Lewis ◽  
Alexander G. R. Howe ◽  
Grzegorz M. Suldecki ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Reactive Oxygen ◽  
Water Disinfection ◽  
Oxygen Species ◽  
In Situ Generation

In Situ Generation of Unstable Difluoromethylphosphonate-Containing Diazoalkanes and Their Use in [3 + 2] Cycloaddition Reactions with Vinyl Sulfones

2021 ◽  
Vol 23 (3) ◽  
pp. 1130-1134
Author(s):  
Haibo Mei ◽  
Li Wang ◽  
Romana Pajkert ◽  
Qian Wang ◽  
Jingcheng Xu ◽  
...  
Keyword(s):  
Cycloaddition Reactions ◽  
In Situ Generation

In-situ generation of Ru-catechol coordinative polymer precursor for high-performance hydrogen evolution reaction doped carbon catalyst

2021 ◽  
Vol 285 ◽  
pp. 119795
Author(s):  
Tong Wu ◽  
Jing Hong ◽  
Zhenwu Lu ◽  
Haiyang Wu ◽  
Chenzhi Wu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
High Performance ◽  
Polymer Precursor ◽  
Carbon Catalyst ◽  
In Situ Generation
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