Direct and Selective Metal-Free N6-Arylation of Adenosine Residues for Simple Fluorescence Labeling of DNA and RNA

2021 ◽  
Author(s):  
Young Jun Seo ◽  
Guralamatta Siddappa Ravikumara ◽  
Anup Pandith
Keyword(s):  
Transition Metal ◽  
Fluorescence Labeling ◽  
Metal Free ◽  
Turn On ◽  
Dna And Rna ◽  
Direct Fluorescence ◽  
Fluorescence Turn On

We have developed an unprecedented transition metal–free approach for the direct fluorescence turn-on labeling of natural oligonucleotides through selective N6-arylation of adenosine moieties. This method allows the simple and direct...

A metal-free fluorescence turn-on molecular probe for detection of nucleoside triphosphates

2017 ◽  
Vol 53 (1) ◽  
pp. 208-211 ◽  
Author(s):  
Debabrata Maity ◽  
Mao Li ◽  
Martin Ehlers ◽  
Carsten Schmuck
Keyword(s):  
Fluorescence Probe ◽  
Anion Binding ◽  
Molecular Probe ◽  
Binding Motif ◽  
Metal Free ◽  
Turn On ◽  
Nucleoside Triphosphates ◽  
Fluorescence Turn On

We report a fluorescence probe 1, which contains a naphthalimide fluorophore with two symmetric peptidic arms equipped with a tailor-made anion-binding motif, the guanidiniocarbonyl pyrrole moiety, for the detection of nucleoside triphosphates.

scholarly journals Correction: A metal-free fluorescence turn-on molecular probe for detection of nucleoside triphosphates

2017 ◽  
Vol 53 (93) ◽  
pp. 12588-12588
Author(s):  
Debabrata Maity ◽  
Mao Li ◽  
Martin Ehlers ◽  
Alba Gigante ◽  
Carsten Schmuck
Keyword(s):  
Molecular Probe ◽  
Metal Free ◽  
Turn On ◽  
Nucleoside Triphosphates ◽  
Fluorescence Turn On

Correction for ‘A metal-free fluorescence turn-on molecular probe for detection of nucleoside triphosphates’ by Debabrata Maity et al., Chem. Commun., 2017, 53, 208–211.

Simultaneous determination of cyanide and thiocyanate in swine plasma by high-performance liquid chromatography with fluorescence detection based on a novel D–π–A carbazole-based turn-on fluorescence labeling reagent

2019 ◽  
Vol 11 (23) ◽  
pp. 2983-2990 ◽  
Author(s):  
Pengjie Luo ◽  
Yanxin Yu ◽  
Di Wu ◽  
Xiuting Li ◽  
Chunji Dai ◽  
...  
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Simultaneous Determination ◽  
Fluorescence Detection ◽  
High Performance ◽  
Current Work ◽  
Fluorescence Labeling ◽  
Turn On ◽  
Fluorescence Turn On

The goal of the current work was to develop a simple and sensitive high-performance liquid chromatography in combination with the fluorescence detection (HPLC-FLD) method for the fluorescence turn-on determination of cyanide and thiocyanate in swine plasma.

Transition-metal-free catalytic hydroboration reduction of amides to amines

2020 ◽  
Vol 7 (21) ◽  
pp. 3515-3520
Author(s):  
Wubing Yao ◽  
Jiali Wang ◽  
Aiguo Zhong ◽  
Shiliang Wang ◽  
Yinlin Shao
Keyword(s):  
Transition Metal ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Value Added ◽  
Metal Free

The selective catalytic reduction of amides to value-added amine products is a desirable but challenging transformation.

Deaminative carbonylative thioesterification of activated alkylamines with thiophenols under transition-metal-free conditions

2021 ◽  
Author(s):  
Fengqian Zhao ◽  
Xiao-Feng Wu
Keyword(s):  
Free Radical ◽  
Transition Metal ◽  
Metal Free

A transition-metal-free radical carbonylation of activated alkylamines with thiophenols has been successfully developed. Various thioesters were selectively produced with moderate to good yields.

A Boronic Acid-Based Fluorescence Hydrogel for Monosaccharide Detection

2018 ◽  
Author(s):  
Suying Xu ◽  
Adam Sedgwick ◽  
Souad Elfecky ◽  
Wenbo Chen ◽  
Ashley Jones ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Boronic Acid ◽  
Binding Constants ◽  
Strong Fluorescence ◽  
Fluorescence Response ◽  
Turn On ◽  
Fluorescence Turn On ◽  
Hydrogel System

<p>A boronic acid-based anthracene fluorescent probe was functionalised with an acrylamide unit to incorporate into a hydrogel system for monosaccharide detection<i>. </i>In solution, the fluorescent probe<b> </b>displayed a strong fluorescence turn-on response upon exposure to fructose, and an expected trend in apparent binding constants, as judged by a fluorescence response where D-fructose > D-galactose > D-mannose > D-glucose. The hydrogel incorporating the boronic acid monomer demonstrated the ability to detect monosaccharides by fluorescence with the same overall trend as the monomer in solution with the addition of fructose resulting in a 10-fold enhancement (≤ 0.25 M). <b><u></u></b></p>

Regioselective C3-H Trifluoromethylation of 2H-Indazole Under Transition-Metal-Free Photoredox Catalysis

2019 ◽  
Author(s):  
Arumugavel Murugan ◽  
Venkata Nagarjuna Babu ◽  
Nagaraj Sabarinathan ◽  
Sharada Duddu. S
Keyword(s):  
Transition Metal ◽  
Visible Light ◽  
Practical Approach ◽  
Hypervalent Iodine ◽  
Radical Mechanism ◽  
Photoredox Catalysis ◽  
Metal Free

Here we report a visible-light-promoted metal-free regioselective C3-H trifluoromehtylation reaction that proceeds via radical mechanism and which supported by control experiments. The combination of photoredox catalysis and hypervalent iodine reagent provides a practical approach for the present trifluoromethylation reaction and synthesis of a library of trifluoromethylated indazoles.

Selective Oxidation of Alcohols Catalyzed by a Transition Metal-Free System of NHPI/DDQ/NaNO2

2011 ◽  
Vol 32 (1) ◽  
pp. 118-122 ◽  
Author(s):  
Lipeng ZHOU ◽  
Chaofeng ZHANG ◽  
Tao FANG ◽  
Bingbing ZHANG ◽  
Ying WANG ◽  
...  
Keyword(s):  
Transition Metal ◽  
Selective Oxidation ◽  
Free System ◽  
Metal Free ◽  
Oxidation Of Alcohols

Simple Fluorescence Turn-On Chemosensor for Selective Detection of Ba2+ Ion and Its Live Cell Imaging

2019 ◽  
Vol 91 (15) ◽  
pp. 10095-10101 ◽  
Author(s):  
Palanisamy Ravichandiran ◽  
Sivakumar Allur Subramaniyan ◽  
Antony Paulraj Bella ◽  
Princy Merlin Johnson ◽  
Ae Rhan Kim ◽  
...  
Keyword(s):  
Live Cell Imaging ◽  
Cell Imaging ◽  
Live Cell ◽  
Selective Detection ◽  
Turn On ◽  
Fluorescence Turn On
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